/* ==========================================================================
   Becca Rasmussen - Archival Photo Gallery & RAW Uploader
   Visual World: Precision Contact Sheet & Master Print
   ========================================================================== */

/* ==========================================================================
   Digital Lavender Color Palette
   Reference Swatches:
   - Deep Royal Violet:   #42326E
   - Medium Violet:       #6E5B9A
   - Bright Soft Lilac:   #B29CE4
   - Muted Heather:       #B2A6CE
   - Pale Lavender:       #D7C8ED
   - Light Lavender Mist: #E0D4FC
   - Studio Paper Canvas: #FAF9FC
   ========================================================================== */

:root,
[data-theme="lavender"],
[data-theme="light"] {
  /* Lush Digital Lavender Theme — 100% Lavender Canvas (No Black, No White) */
  --bg-main: #e0d4fc;         /* Swatch 6: Light Lavender Mist - Full page background */
  --bg-surface: #d7c8ed;      /* Swatch 5: Pale Lavender - Header and sticky bars */
  --bg-card: #ede4fd;         /* Soft frosted lavender photo mounts */
  --bg-elevated: #f4effe;     /* Hover and elevated lavender surfaces */
  --bg-dropzone: #d7c8ed;     /* Pale lavender dropzone dock */

  --border-subtle: #c8b9e6;   /* Defined lavender dividers */
  --border-strong: #b2a6ce;   /* Swatch 4: Muted Heather frame boundaries */
  --border-focus: #6e5b9a;    /* Swatch 2: Medium Violet focus indicator */

  --text-primary: #2d1d4e;    /* Deep regal eggplant/violet text (WCAG AAA >= 9:1 contrast) */
  --text-secondary: #574479;  /* Rich medium-violet secondary labels (WCAG AA >= 5:1 contrast) */
  --text-muted: #7c6c9a;      /* Muted lavender technical readout labels */

  /* Digital Lavender Palette Swatches */
  --lavender-deep: #42326e;
  --lavender-mid: #6e5b9a;
  --lavender-lilac: #b29ce4;
  --lavender-heather: #b2a6ce;
  --lavender-pale: #d7c8ed;
  --lavender-mist: #e0d4fc;
  --canvas-neutral: #e0d4fc;

  /* Functional Accents */
  --accent-primary: #42326e;
  --accent-primary-hover: #58448f;
  --accent-primary-subtle: rgba(110, 91, 154, 0.16);
  --accent-deep: #42326e;
  --accent-mid: #6e5b9a;

  /* Backwards compatibility aliases */
  --accent-amber: var(--accent-primary);
  --accent-amber-hover: var(--accent-primary-hover);
  --accent-amber-subtle: var(--accent-primary-subtle);

  --btn-primary-bg: #42326e;
  --btn-primary-hover: #55408a;
  --btn-primary-text: #ffffff;

  --status-success: #2e9f4f;
  --status-error: #d44343;

  --card-shadow: 0 4px 18px rgba(66, 50, 110, 0.14);
  --modal-shadow: 0 24px 60px rgba(66, 50, 110, 0.3);
  --header-scrolled-bg: rgba(215, 200, 237, 0.94);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Roboto Mono", Menlo, Consolas, monospace;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  --transition-fast: 160ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 240ms cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="deep"],
[data-theme="dark"] {
  /* Deep Velvet Lavender Theme — Rich Purple/Violet Velvet Night (No Harsh Black) */
  --bg-main: #302254;         /* Rich Royal Purple-Lavender velvet ground */
  --bg-surface: #3d2d68;      /* Deep amethyst header & nav bar */
  --bg-card: #473578;         /* Deep lavender card mounts */
  --bg-elevated: #543f8c;     /* Lighter amethyst elevated surfaces */
  --bg-dropzone: #382760;     /* Deep lavender dropzone bay */

  --border-subtle: #5b4492;   /* Amethyst hairline dividers */
  --border-strong: #7258a6;   /* Medium lavender-violet borders */
  --border-focus: #b29ce4;    /* Swatch 3: Lilac focus indicator */

  --text-primary: #f6f1ff;    /* Soft luminous lavender-white text */
  --text-secondary: #d7c8ed;  /* Pale lavender secondary labels */
  --text-muted: #b2a6ce;      /* Muted heather technical readout text */

  --accent-primary: #b29ce4;
  --accent-primary-hover: #c7b5f0;
  --accent-primary-subtle: rgba(178, 156, 228, 0.2);
  --accent-deep: #42326e;
  --accent-mid: #6e5b9a;

  --accent-amber: var(--accent-primary);
  --accent-amber-hover: var(--accent-primary-hover);
  --accent-amber-subtle: var(--accent-primary-subtle);

  --btn-primary-bg: #b29ce4;
  --btn-primary-hover: #c7b5f0;
  --btn-primary-text: #241744;

  --card-shadow: 0 4px 20px rgba(22, 14, 42, 0.5);
  --modal-shadow: 0 24px 60px rgba(18, 11, 36, 0.75);
  --header-scrolled-bg: rgba(61, 45, 104, 0.94);
}

/* Browser Surface Theming */
::selection {
  background: var(--lavender-mist);
  color: var(--lavender-deep);
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-main);
}

::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--lavender-heather);
}

:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

/* Base Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button, input, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

a {
  color: inherit;
  text-decoration: none;
}

/* Container */
.container {
  width: 100%;
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
  border-bottom: 1px solid var(--border-subtle);
  background-color: var(--bg-surface);
  position: sticky;
  top: 0;
  z-index: 40;
  box-shadow: 0 4px 16px rgba(66, 50, 110, 0.08);
  transition: background-color 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.site-header.is-scrolled {
  background-color: var(--header-scrolled-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 4px 20px rgba(66, 50, 110, 0.14);
}

.header-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 1.25rem 0 0.95rem;
  gap: 0.85rem;
  transition: padding 0.3s cubic-bezier(0.16, 1, 0.3, 1), gap 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.site-header.is-scrolled .header-inner {
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  padding: 0.35rem 0;
  gap: 0.75rem;
  min-height: 48px;
}

.brand-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin: 0 auto;
  transition: margin 0.3s cubic-bezier(0.16, 1, 0.3, 1), align-items 0.3s ease;
}

.site-header.is-scrolled .brand-block {
  margin: 0;
  align-items: flex-start;
  text-align: left;
}

.brand-title {
  font-family: 'Pacifico', cursive, sans-serif;
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
  font-weight: 400;
  line-height: 1.2;
  text-align: center;
  position: relative;
  display: inline-block;
  cursor: default;
  margin: 0;

  /* Juicy Mint-to-Lime Jelly Gradient Fill */
  background: linear-gradient(180deg, 
    #f8fee8 0%, 
    #ddfaa4 18%, 
    #aef3b3 42%, 
    #76d68b 72%, 
    #44a364 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;

  /* Tubular Inflated Contour Stroke */
  -webkit-text-stroke: 4px #3ea261;
  paint-order: stroke fill;

  /* 3D Extruded Bevel Layers & Ambient Depth Shadows */
  filter: 
    drop-shadow(0 1px 0 #95ea9f)
    drop-shadow(0 2.5px 0 #328b51)
    drop-shadow(0 5px 0 #236c3d)
    drop-shadow(0 7.5px 1px #16502c)
    drop-shadow(0 14px 20px rgba(18, 66, 35, 0.42));
  
  transition: font-size 0.3s cubic-bezier(0.16, 1, 0.3, 1), 
              -webkit-text-stroke 0.3s ease, 
              filter 0.3s ease, 
              transform 0.28s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.brand-title:hover {
  transform: scale(1.03) rotate(-0.5deg);
}

.site-header.is-scrolled .brand-title {
  font-size: 1.85rem;
  line-height: 1.1;
  -webkit-text-stroke: 2.2px #3ea261;
  filter: 
    drop-shadow(0 0.8px 0 #95ea9f)
    drop-shadow(0 1.8px 0 #328b51)
    drop-shadow(0 3.2px 0 #236c3d)
    drop-shadow(0 4.8px 1px #16502c)
    drop-shadow(0 8px 12px rgba(18, 66, 35, 0.35));
  cursor: pointer;
}

.site-header.is-scrolled .brand-title:hover {
  transform: scale(1.04);
}

/* Specular Gel Gloss Highlight Layer */
.brand-title::before {
  content: attr(data-text);
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  pointer-events: none;

  background: linear-gradient(180deg, 
    rgba(255, 255, 255, 0.95) 0%, 
    rgba(255, 255, 255, 0.55) 15%, 
    rgba(255, 255, 255, 0) 36%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  -webkit-text-stroke: 1.5px rgba(255, 255, 255, 0.7);
  paint-order: stroke fill;
  filter: drop-shadow(0 -1px 1px rgba(255, 255, 255, 0.9));
  transition: -webkit-text-stroke 0.3s ease, filter 0.3s ease;
}

.site-header.is-scrolled .brand-title::before {
  -webkit-text-stroke: 1px rgba(255, 255, 255, 0.75);
  filter: drop-shadow(0 -0.5px 0.5px rgba(255, 255, 255, 0.9));
}

.brand-tagline {
  font-family: 'Fredoka', 'Pacifico', cursive, sans-serif;
  font-size: clamp(1rem, 2.2vw, 1.35rem);
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-top: 0.5rem;
  text-align: center;
  position: relative;
  display: inline-block;
  overflow: hidden;
  max-height: 40px;

  background: linear-gradient(180deg, 
    #f7feeb 0%, 
    #ddfaa6 24%, 
    #a4f2ac 60%, 
    #53bc75 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  -webkit-text-stroke: 1.8px #2b7d4c;
  paint-order: stroke fill;
  filter: 
    drop-shadow(0 1.5px 0 #1e6037)
    drop-shadow(0 3.5px 0 #144b29)
    drop-shadow(0 6px 10px rgba(18, 66, 35, 0.35));
  
  transition: opacity 0.25s ease, max-height 0.3s cubic-bezier(0.16, 1, 0.3, 1), margin 0.3s ease;
}

.site-header.is-scrolled .brand-tagline {
  max-height: 0;
  opacity: 0;
  margin: 0;
  pointer-events: none;
}

.header-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.85rem;
  transition: gap 0.3s ease;
}

.site-header.is-scrolled .header-actions {
  margin-left: auto;
  gap: 0.5rem;
}

.site-header.is-scrolled .btn {
  padding: 0.32rem 0.68rem;
  font-size: 0.82rem;
  border-radius: var(--radius-sm);
}

.site-header.is-scrolled .stat-chip {
  padding: 0.22rem 0.55rem;
  font-size: 0.76rem;
}

.stat-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  font-size: 0.82rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 500;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.btn-icon {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
}

.btn-primary {
  background-color: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  border: 1px solid var(--btn-primary-bg);
  font-weight: 600;
}

.btn-primary:hover {
  background-color: var(--btn-primary-hover);
  border-color: var(--btn-primary-hover);
  color: var(--btn-primary-text);
}

.btn-secondary {
  background-color: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
}

.btn-secondary:hover {
  background-color: var(--bg-elevated);
  border-color: var(--border-focus);
}

.btn-ghost {
  color: var(--text-secondary);
  border: 1px solid transparent;
}

.btn-ghost:hover {
  color: var(--text-primary);
  background-color: var(--bg-card);
}

#themeToggleBtn {
  gap: 0.4rem;
  padding: 0.45rem 0.8rem;
  font-size: 0.82rem;
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-card);
  color: var(--text-secondary);
}

#themeToggleBtn:hover {
  color: var(--text-primary);
  border-color: var(--border-strong);
  background-color: var(--bg-elevated);
}

#themeToggleBtn .btn-icon {
  width: 16px;
  height: 16px;
  stroke: var(--accent-primary);
}

.btn-danger {
  background-color: var(--status-error);
  color: #ffffff;
  border: 1px solid var(--status-error);
}

.btn-danger:hover {
  background-color: #eb6868;
  border-color: #eb6868;
}

.btn-danger:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
}


/* ==========================================================================
   Upload Panel (Drawer)
   ========================================================================== */

.upload-panel {
  border-bottom: 1px solid var(--border-strong);
  background: var(--bg-surface);
  padding: 2rem 0;
  display: none;
  animation: slideDown 220ms cubic-bezier(0.16, 1, 0.3, 1);
}

.upload-panel.is-open {
  display: block;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.upload-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.upload-panel-title {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.upload-panel-subtitle {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.2rem;
}

.dropzone {
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  background-color: var(--bg-dropzone);
  padding: 3rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
  position: relative;
}

.dropzone:hover, .dropzone.is-dragover {
  border-color: var(--accent-primary);
  background-color: var(--accent-primary-subtle);
}

.dropzone-icon {
  width: 44px;
  height: 44px;
  margin: 0 auto 1rem;
  stroke: var(--accent-primary);
  stroke-width: 1.6;
  fill: none;
}

.dropzone-heading {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.dropzone-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  max-width: 580px;
  margin: 0 auto 1rem;
}

.format-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem;
}

.format-tag {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  font-size: 0.74rem;
  font-family: var(--font-mono);
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
}

.format-tag.raw-tag {
  color: var(--accent-primary);
  border-color: rgba(178, 156, 228, 0.35);
  background-color: var(--accent-primary-subtle);
}

[data-theme="light"] .format-tag.raw-tag {
  color: var(--lavender-deep);
  border-color: var(--lavender-lilac);
  background-color: var(--lavender-mist);
}

/* Upload Queue */
.upload-queue-container {
  margin-top: 1.75rem;
  display: none;
}

.upload-queue-container.has-items {
  display: block;
}

.queue-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.queue-progress-bar-total {
  width: 100%;
  height: 4px;
  background-color: var(--border-subtle);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 1rem;
}

.queue-progress-bar-fill {
  height: 100%;
  background-color: var(--accent-primary);
  width: 100%;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 150ms ease;
}

.queue-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-height: 280px;
  overflow-y: auto;
  padding-right: 0.5rem;
}

.queue-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 0.85rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  gap: 0.75rem;
  font-size: 0.85rem;
}

.queue-item-name {
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  max-width: 320px;
}

.queue-item-meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.queue-item-status {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.status-badge {
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
}

.status-badge.waiting {
  background-color: var(--border-subtle);
  color: var(--text-secondary);
}

.status-badge.uploading {
  background-color: var(--accent-primary-subtle);
  color: var(--accent-primary);
}

[data-theme="light"] .status-badge.uploading {
  background-color: var(--lavender-mist);
  color: var(--lavender-deep);
}

.status-badge.processing {
  background-color: rgba(99, 140, 255, 0.12);
  color: #8bb2ff;
}

.status-badge.complete {
  background-color: rgba(78, 203, 113, 0.12);
  color: var(--status-success);
}

.status-badge.error {
  background-color: rgba(224, 87, 87, 0.12);
  color: var(--status-error);
}

/* ==========================================================================
   Gallery Controls Bar
   ========================================================================== */

.gallery-controls-section {
  padding: 1.5rem 0 1rem;
}

.controls-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 1rem;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  background-color: var(--bg-surface);
  padding: 0.25rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.filter-btn {
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  color: var(--text-primary);
}

.filter-btn.is-active {
  background-color: var(--bg-card);
  color: var(--text-primary);
  font-weight: 600;
  box-shadow: 0 1px 4px rgba(66, 50, 110, 0.12);
}

.sort-and-view-group {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.select-toggle-btn {
  font-size: 0.82rem;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-strong);
  transition: all var(--transition-fast);
}

.select-toggle-btn.is-active {
  background-color: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  border-color: var(--btn-primary-bg);
  font-weight: 500;
}

.select-toggle-btn.is-active:hover {
  background-color: var(--btn-primary-hover);
  border-color: var(--btn-primary-hover);
}

.sort-select {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-md);
  font-size: 0.82rem;
}

.density-toggle {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.2rem;
}

.density-btn {
  padding: 0.25rem 0.4rem;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.density-btn.is-active {
  background-color: var(--bg-card);
  color: var(--text-primary);
}

/* ==========================================================================
   Master Contact Sheet Gallery Grid
   ========================================================================== */

.gallery-section {
  padding: 1.5rem 0 5rem;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  transition: gap var(--transition-fast);
}

.gallery-grid.is-compact {
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

/* Photo Card */
.photo-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
  user-select: none;
}

.photo-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
}

/* Card Selection Checkbox */
.photo-select-checkbox {
  position: absolute;
  top: 10px;
  left: 10px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background-color: rgba(12, 13, 16, 0.75);
  border: 1.5px solid rgba(255, 255, 255, 0.65);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  padding: 0;
  opacity: 0;
  transform: scale(0.85);
  transition: opacity var(--transition-fast), transform var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
}

.photo-select-checkbox .check-icon {
  width: 14px;
  height: 14px;
  stroke: var(--bg-main);
  stroke-width: 2.6;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

/* Checkbox visibility conditions */
body.is-admin .photo-card:hover .photo-select-checkbox {
  opacity: 0.85;
  transform: scale(1);
}

.photo-select-checkbox:hover {
  opacity: 1 !important;
  border-color: var(--accent-primary) !important;
  transform: scale(1.1) !important;
}

.gallery-grid.is-select-mode .photo-select-checkbox {
  opacity: 0.85;
  transform: scale(1);
}

/* Card is-selected state */
.photo-card.is-selected {
  border-color: var(--accent-primary) !important;
  box-shadow: 0 0 0 1px var(--accent-primary), var(--card-shadow);
}

.photo-card.is-selected .photo-thumb-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background-color: var(--accent-primary-subtle);
  pointer-events: none;
  z-index: 2;
}

.photo-card.is-selected .photo-select-checkbox {
  opacity: 1 !important;
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
  transform: scale(1);
}

.photo-card.is-selected .photo-select-checkbox .check-icon {
  opacity: 1;
  stroke: var(--btn-primary-text);
}

.photo-thumb-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 2;
  background-color: var(--bg-main);
  overflow: hidden;
}

.photo-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 300ms ease;
}

.photo-card:hover .photo-thumb {
  transform: scale(1.02);
}


/* Card Header & Footer (Contact Sheet Aesthetics) */
.photo-card-info {
  padding: 0.75rem 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.card-top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.frame-index {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.card-badges {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.format-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-sm);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.format-badge.is-raw {
  color: var(--accent-primary);
  border-color: rgba(178, 156, 228, 0.35);
  background-color: var(--accent-primary-subtle);
}

[data-theme="light"] .format-badge.is-raw {
  color: var(--lavender-deep);
  border-color: var(--lavender-lilac);
  background-color: var(--lavender-mist);
}

.format-badge.is-video {
  color: #8bb2ff;
  border-color: rgba(139, 178, 255, 0.3);
}

.format-badge.is-grouped {
  color: var(--text-primary);
  border-color: var(--accent-primary);
  background: linear-gradient(135deg, var(--bg-surface) 0%, var(--accent-primary-subtle) 100%);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
  letter-spacing: 0.02em;
}

[data-theme="light"] .format-badge.is-grouped {
  color: var(--lavender-deep);
  border-color: var(--lavender-accent);
  background: linear-gradient(135deg, var(--lavender-mount) 0%, var(--lavender-mist) 100%);
}

.video-play-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 44px;
  height: 44px;
  background-color: rgba(45, 30, 78, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  pointer-events: none;
  transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.photo-card:hover .video-play-overlay {
  transform: translate(-50%, -50%) scale(1.1);
  background-color: rgba(66, 50, 110, 0.92);
}

.photo-title {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.photo-exif-summary {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Empty State */
.empty-gallery {
  text-align: center;
  padding: 6rem 1.5rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  max-width: 600px;
  margin: 2rem auto;
}

.empty-icon {
  width: 48px;
  height: 48px;
  stroke: var(--text-muted);
  stroke-width: 1.5;
  fill: none;
  margin: 0 auto 1.25rem;
}

.empty-title {
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.empty-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

/* ==========================================================================
   Full-Bleed Lightbox & Loupe
   ========================================================================== */

.lightbox-modal {
  position: fixed;
  inset: 0;
  background-color: rgba(38, 26, 68, 0.98);
  z-index: 100;
  display: none;
  flex-direction: column;
  animation: fadeIn 180ms ease;
}

.lightbox-modal.is-active {
  display: flex;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.lightbox-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  background-color: var(--bg-main);
  z-index: 10;
}

.lightbox-title-area {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  overflow: hidden;
}

.lightbox-counter {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
}

.lightbox-title {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.lightbox-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.lightbox-content {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 1rem;
}

.lightbox-image-wrap {
  position: relative;
  max-width: 100%;
  max-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
}

.lightbox-image-wrap.is-zoomed {
  cursor: grab;
}

.lightbox-image-wrap.is-dragging {
  cursor: grabbing !important;
}

.lightbox-image {
  max-width: 90vw;
  max-height: 78vh;
  object-fit: contain;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
  border-radius: var(--radius-sm);
  transform-origin: center center;
  will-change: transform;
  user-select: none;
  -webkit-user-select: none;
  -webkit-user-drag: none;
  cursor: zoom-in;
}

.lightbox-image-wrap.is-zoomed .lightbox-image {
  cursor: grab;
}

.lightbox-image-wrap.is-dragging .lightbox-image {
  cursor: grabbing !important;
}

.lightbox-zoom-hud {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background-color: rgba(24, 15, 42, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.38rem 0.95rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  pointer-events: none;
  opacity: 0;
  transition: opacity 180ms ease, transform 180ms ease;
  z-index: 30;
}

.lightbox-zoom-hud.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.lightbox-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 50px;
  height: 50px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 50%;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
  z-index: 20;
}

.lightbox-nav-btn:hover {
  background-color: var(--bg-card);
  border-color: var(--border-strong);
}

.lightbox-nav-prev {
  left: 1.5rem;
}

.lightbox-nav-next {
  right: 1.5rem;
}

/* Lightbox Info Drawer */
.lightbox-bottombar {
  border-top: 1px solid var(--border-subtle);
  background-color: var(--bg-main);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  z-index: 10;
}

.exif-readout-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.exif-item {
  display: flex;
  flex-direction: column;
}

.exif-label {
  font-size: 0.68rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: var(--font-mono);
}

.exif-val {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-primary);
  font-weight: 500;
}

.lightbox-downloads {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

/* ==========================================================================
   Admin Authentication Modal
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(38, 26, 68, 0.75);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 120;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-backdrop.is-active {
  display: flex;
}

.modal-dialog {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 420px;
  padding: 2rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  animation: scaleUp 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes scaleUp {
  from {
    opacity: 0;
    transform: scale(0.96);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.modal-title {
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.modal-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  line-height: 1.5;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}

.form-input {
  width: 100%;
  background-color: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 0.65rem 0.85rem;
  color: var(--text-primary);
  font-size: 0.92rem;
  transition: border-color var(--transition-fast);
}

.form-input:focus {
  border-color: var(--accent-primary);
}

.modal-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.65rem;
}

.auth-error-msg {
  color: var(--status-error);
  font-size: 0.82rem;
  margin-top: 0.5rem;
  display: none;
}

/* ==========================================================================
   Grouped RAW + JPEG Download Modal
   ========================================================================== */

.modal-dialog-group {
  max-width: 460px;
  padding: 1.75rem;
  border-radius: var(--radius-lg);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  box-shadow: 0 24px 48px rgba(20, 14, 38, 0.6), 0 0 0 1px rgba(178, 156, 228, 0.12);
}

.group-modal-top {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: 1.35rem;
}

.group-modal-badge-row {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.group-modal-close {
  padding: 0.35rem;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
}
.group-modal-close:hover {
  color: var(--text-primary);
}

.group-modal-preview-box {
  width: 100%;
  max-width: 340px;
  height: 210px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.group-modal-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.group-modal-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
  word-break: break-all;
}

.group-modal-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}

.group-modal-meta {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-muted);
}

.group-modal-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
  margin-bottom: 1.25rem;
}

.group-download-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 0.75rem;
  text-decoration: none;
  border-radius: var(--radius-md);
  text-align: center;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
  cursor: pointer;
}

.group-download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25);
}

.group-download-btn .btn-icon {
  margin-bottom: 0.35rem;
  width: 20px;
  height: 20px;
}

.group-btn-text {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
}

.group-btn-title {
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
}

.group-btn-details {
  font-size: 0.74rem;
  opacity: 0.85;
  font-family: var(--font-mono);
}

.group-modal-footer {
  display: flex;
  justify-content: center;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border-subtle);
}

@media (max-width: 480px) {
  .group-modal-buttons {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Floating Batch Action Bar
   ========================================================================== */

.batch-action-bar {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(140%);
  z-index: 60;
  background-color: rgba(21, 18, 32, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-strong);
  border-radius: 9999px;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.06);
  padding: 0.55rem 0.85rem;
  transition: transform 260ms cubic-bezier(0.16, 1, 0.3, 1), opacity 200ms ease;
  opacity: 0;
  pointer-events: none;
  max-width: calc(100vw - 2rem);
}

[data-theme="light"] .batch-action-bar {
  background-color: rgba(255, 255, 255, 0.96);
  border-color: var(--border-strong);
  box-shadow: 0 16px 36px rgba(66, 50, 110, 0.18), 0 0 0 1px rgba(66, 50, 110, 0.08);
}

.batch-action-bar.is-visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.batch-bar-inner {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: nowrap;
}

.batch-bar-left, .batch-bar-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.batch-count-chip {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent-primary);
  background-color: var(--accent-primary-subtle);
  padding: 0.3rem 0.75rem;
  border-radius: 9999px;
  border: 1px solid rgba(178, 156, 228, 0.35);
  white-space: nowrap;
}

[data-theme="light"] .batch-count-chip {
  color: var(--lavender-deep);
  background-color: var(--lavender-mist);
  border-color: var(--lavender-lilac);
}

/* ==========================================================================
   Toast Notification
   ========================================================================== */

.toast-notification {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 150;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-left: 3px solid var(--accent-primary);
  border-radius: var(--radius-md);
  padding: 0.75rem 1.25rem;
  color: var(--text-primary);
  font-size: 0.88rem;
  box-shadow: 0 12px 28px rgba(66, 50, 110, 0.2);
  transform: translateY(20px);
  opacity: 0;
  pointer-events: none;
  transition: transform 220ms cubic-bezier(0.16, 1, 0.3, 1), opacity 220ms ease;
  max-width: 380px;
}

.toast-notification.is-visible {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.toast-notification.is-success {
  border-left-color: var(--status-success);
}

.toast-notification.is-error {
  border-left-color: var(--status-error);
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */

@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1.25rem 0 1rem;
    gap: 0.85rem;
  }

  .brand-title {
    font-size: 2.2rem;
    -webkit-text-stroke: 2.8px #3ea261;
  }

  .brand-title::before {
    -webkit-text-stroke: 1px rgba(255, 255, 255, 0.7);
  }

  .brand-tagline {
    font-size: 1rem;
    -webkit-text-stroke: 1.2px #2b7d4c;
  }

  .header-actions {
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
  }

  /* Scrolled State on Mobile */
  .site-header.is-scrolled .header-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding: 0.35rem 0;
    gap: 0.4rem;
    min-height: 44px;
  }

  .site-header.is-scrolled .brand-block {
    margin: 0;
    align-items: flex-start;
    text-align: left;
  }

  .site-header.is-scrolled .brand-title {
    font-size: 1.35rem;
    -webkit-text-stroke: 1.8px #3ea261;
  }

  .site-header.is-scrolled .brand-tagline {
    display: none;
  }

  .site-header.is-scrolled .stat-chip {
    display: none;
  }

  .site-header.is-scrolled .header-actions {
    width: auto;
    justify-content: flex-end;
    gap: 0.35rem;
    flex-wrap: nowrap;
  }

  .site-header.is-scrolled .btn {
    padding: 0.28rem 0.55rem;
    font-size: 0.78rem;
  }

  .site-header.is-scrolled #editorNavBtn span,
  .site-header.is-scrolled #themeToggleBtn .theme-text {
    display: none;
  }

  .controls-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .folders-nav-bar {
    gap: 0.65rem;
  }

  .folder-chip {
    font-size: 0.95rem;
    padding: 0.55rem 1.1rem;
    border-radius: var(--radius-md);
  }

  .new-folder-btn {
    font-size: 0.9rem;
    padding: 0.55rem 1rem;
    border-radius: var(--radius-md);
  }

  .sort-and-view-group {
    width: 100%;
    justify-content: space-between;
  }

  .gallery-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .batch-action-bar {
    bottom: 1rem;
    width: calc(100% - 1.5rem);
    border-radius: var(--radius-lg);
    padding: 0.65rem 0.85rem;
  }

  .batch-bar-inner {
    flex-direction: column;
    gap: 0.5rem;
    width: 100%;
  }

  .batch-bar-left, .batch-bar-right {
    width: 100%;
    justify-content: space-between;
  }

  .lightbox-bottombar {
    flex-direction: column;
    align-items: flex-start;
  }

  .lightbox-downloads {
    width: 100%;
    justify-content: stretch;
  }

  .lightbox-downloads .btn {
    flex: 1;
  }

  .lightbox-nav-prev {
    left: 0.5rem;
  }

  .lightbox-nav-next {
    right: 0.5rem;
  }
}

/* ==========================================================================
   Card Favorite Heart Button
   ========================================================================== */

.photo-fav-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: rgba(12, 13, 16, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  padding: 0;
  opacity: 0;
  transform: scale(0.9);
  transition: opacity var(--transition-fast), transform var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
}

.photo-card:hover .photo-fav-btn,
.photo-fav-btn.is-favorited {
  opacity: 0.92;
  transform: scale(1);
}

.photo-fav-btn:hover {
  opacity: 1 !important;
  transform: scale(1.15) !important;
  border-color: #e05757 !important;
}

.photo-fav-btn .heart-icon-card {
  width: 14px;
  height: 14px;
  stroke: var(--text-primary);
  stroke-width: 2;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: all var(--transition-fast);
}

.photo-fav-btn.is-favorited {
  border-color: rgba(224, 87, 87, 0.6);
  background-color: rgba(20, 10, 12, 0.85);
}

.photo-fav-btn.is-favorited .heart-icon-card,
.photo-fav-btn:hover .heart-icon-card {
  stroke: #e05757;
  fill: #e05757;
}

#lightboxFavBtn.is-favorited {
  border-color: rgba(224, 87, 87, 0.6);
  color: #e05757;
}

#lightboxFavBtn.is-favorited .heart-icon {
  stroke: #e05757;
  fill: #e05757;
}

/* ==========================================================================
   Upload Destination Bar
   ========================================================================== */

.upload-destination-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.65rem 1rem;
  margin-bottom: 1.25rem;
}

.upload-destination-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.84rem;
  color: var(--text-secondary);
}

.upload-destination-label .btn-icon {
  stroke: var(--accent-primary);
}

.upload-destination-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.folder-dropdown {
  background-color: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 0.35rem 0.75rem;
  font-size: 0.84rem;
}

/* ==========================================================================
   Folders & Collections Navigation Strip
   ========================================================================== */

.folders-nav-section {
  padding: 1.5rem 0 0.5rem;
}

.folders-nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.folders-scroll-list {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  flex: 1;
}

/* Distinct 'click box' / button styling for folder navigation */
.folder-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.65rem 1.35rem;
  background-color: var(--bg-card);
  background-image: linear-gradient(180deg, #ede4fd 0%, #d4c2ed 100%);
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-md);
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--lavender-deep);
  box-shadow: 0 2px 6px rgba(66, 50, 110, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.5);
  transition: all 180ms ease;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}

.folder-chip:hover {
  color: #2d1d4e;
  background-color: #ede4fd;
  background-image: linear-gradient(180deg, #f5effe 0%, #dfd0f8 100%);
  border-color: var(--lavender-mid);
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(66, 50, 110, 0.18), 0 0 0 1px rgba(110, 91, 154, 0.3);
}

.folder-chip:active {
  transform: translateY(0);
  box-shadow: 0 2px 4px rgba(66, 50, 110, 0.15);
}

.folder-chip.is-active {
  background-color: #42326e;
  background-image: linear-gradient(180deg, #523f82 0%, #38295e 100%);
  color: #ffffff;
  border-color: #6e5b9a;
  box-shadow: 0 0 0 2px rgba(110, 91, 154, 0.4), 0 4px 12px rgba(66, 50, 110, 0.25);
  font-weight: 600;
  transform: translateY(-1px);
}

.folder-chip.is-active:hover {
  color: #ffffff;
  background-color: #523f82;
  background-image: linear-gradient(180deg, #5f4a96 0%, #42326e 100%);
  border-color: #b29ce4;
  box-shadow: 0 0 0 2px rgba(178, 156, 228, 0.5), 0 6px 16px rgba(66, 50, 110, 0.3);
}

[data-theme="deep"] .folder-chip,
[data-theme="dark"] .folder-chip {
  background-color: #3d2d68;
  background-image: linear-gradient(180deg, #48357b 0%, #35265b 100%);
  border: 2px solid #6e5b9a;
  color: #f6f1ff;
  box-shadow: 0 2px 6px rgba(18, 11, 36, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

[data-theme="deep"] .folder-chip:hover,
[data-theme="dark"] .folder-chip:hover {
  color: #ffffff;
  background-color: #4a377d;
  background-image: linear-gradient(180deg, #584294 0%, #3f2e6e 100%);
  border-color: #b29ce4;
  box-shadow: 0 6px 14px rgba(18, 11, 36, 0.5), 0 0 0 1px rgba(178, 156, 228, 0.35);
}

[data-theme="deep"] .folder-chip.is-active,
[data-theme="dark"] .folder-chip.is-active {
  background-color: #b29ce4;
  background-image: linear-gradient(180deg, #c2aef0 0%, #a28cd8 100%);
  color: #241744;
  border-color: #e0d4fc;
  box-shadow: 0 0 0 2px rgba(178, 156, 228, 0.5), 0 4px 12px rgba(18, 11, 36, 0.4);
}

[data-theme="deep"] .folder-chip.is-active:hover,
[data-theme="dark"] .folder-chip.is-active:hover {
  color: #241744;
  background-color: #c2aef0;
  border-color: #ffffff;
}

.folder-chip-fav .heart-icon-chip {
  width: 16px;
  height: 16px;
  stroke: #e05757;
  fill: none;
  stroke-width: 2.2;
  transition: all var(--transition-fast);
}

.folder-chip-fav:hover .heart-icon-chip,
.folder-chip-fav.is-active .heart-icon-chip {
  fill: #e05757;
}

.folder-chip-fav.is-active {
  background-color: #eed6dd;
  background-image: linear-gradient(180deg, #f7e2e8 0%, #e6cbd3 100%);
  border-color: #e05757;
  box-shadow: 0 0 0 2px rgba(224, 87, 87, 0.35), 0 4px 12px rgba(224, 87, 87, 0.2);
  color: #a82525;
}

.folder-chip-fav.is-active:hover {
  background-color: #f7e2e8;
  border-color: #c93b3b;
  color: #8c1d1d;
}

[data-theme="deep"] .folder-chip-fav.is-active,
[data-theme="dark"] .folder-chip-fav.is-active {
  background-color: #442436;
  background-image: linear-gradient(180deg, #532c42 0%, #3a1d2d 100%);
  border-color: #e05757;
  box-shadow: 0 0 0 2px rgba(224, 87, 87, 0.5), 0 6px 16px rgba(0, 0, 0, 0.5);
  color: #ffa8a8;
}

.new-folder-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border-radius: var(--radius-md);
  padding: 0.65rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 500;
  border: 2px dashed #b2a6ce;
  background-color: var(--bg-card);
  color: var(--lavender-deep);
  box-shadow: 0 2px 6px rgba(66, 50, 110, 0.1);
  transition: all 180ms ease;
  cursor: pointer;
}

.new-folder-btn:hover {
  border-color: #42326e;
  color: #2d1d4e;
  background-color: var(--bg-elevated);
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(66, 50, 110, 0.16);
}

[data-theme="deep"] .new-folder-btn,
[data-theme="dark"] .new-folder-btn {
  border: 2px dashed #6e5b9a;
  background-color: #3d2d68;
  color: #d7c8ed;
  box-shadow: 0 2px 6px rgba(18, 11, 36, 0.3);
}

[data-theme="deep"] .new-folder-btn:hover,
[data-theme="dark"] .new-folder-btn:hover {
  border-color: #b29ce4;
  color: #ffffff;
  background-color: #4a377d;
  box-shadow: 0 6px 14px rgba(18, 11, 36, 0.45);
}

/* Active Folder Banner */
.active-folder-banner {
  margin-top: 0.85rem;
  padding: 0.85rem 1.15rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.active-folder-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.active-folder-badge {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  color: var(--accent-primary);
  background-color: var(--accent-primary-subtle);
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
}

[data-theme="light"] .active-folder-badge {
  color: var(--lavender-deep);
  background-color: var(--lavender-mist);
}

.active-folder-title {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.active-folder-count {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.active-folder-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-delete-folder:hover {
  color: var(--status-error);
}

/* Folder Assignment Modal */
.assign-folder-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-height: 280px;
  overflow-y: auto;
  margin: 1rem 0;
  padding-right: 0.25rem;
}

.assign-folder-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 0.85rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.assign-folder-item:hover {
  border-color: var(--border-strong);
}

.assign-folder-item-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: var(--text-primary);
}

.assign-folder-item-count {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.assign-folder-item-action .btn {
  font-size: 0.78rem;
  padding: 0.25rem 0.65rem;
}

.assign-folder-footer-action {
  margin-bottom: 1rem;
  display: flex;
  justify-content: flex-start;
}

/* ==========================================================================
   Authentication Login Gate Section & Card
   ========================================================================== */

.auth-gate-section {
  min-height: calc(100vh - 84px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem 1.25rem 4rem;
  position: relative;
  background: radial-gradient(circle at 50% 25%, rgba(178, 156, 228, 0.25) 0%, transparent 65%);
}

[data-theme="deep"] .auth-gate-section,
[data-theme="dark"] .auth-gate-section {
  background: radial-gradient(circle at 50% 25%, rgba(84, 63, 140, 0.35) 0%, transparent 65%);
}

.auth-gate-container {
  width: 100%;
  max-width: 440px;
  margin: 0 auto;
}

.auth-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 2.75rem 2.25rem 2.5rem;
  box-shadow: 0 16px 44px rgba(66, 50, 110, 0.16);
  text-align: center;
  position: relative;
  animation: authCardFadeIn 360ms cubic-bezier(0.16, 1, 0.3, 1);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

[data-theme="deep"] .auth-card,
[data-theme="dark"] .auth-card {
  box-shadow: 0 24px 60px rgba(15, 10, 30, 0.55);
}

@keyframes authCardFadeIn {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes authCardShake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-8px); }
  40%, 80% { transform: translateX(8px); }
}

.auth-card.is-shaking {
  animation: authCardShake 420ms cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
}

.auth-card-badge {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.5rem;
  border-radius: 50%;
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  box-shadow: 0 4px 16px rgba(66, 50, 110, 0.12);
  transition: transform var(--transition-fast);
}

.auth-card:hover .auth-card-badge {
  transform: scale(1.04);
}

.auth-card-badge svg {
  stroke: var(--accent-primary);
}

.auth-card-title {
  font-family: var(--font-sans);
  font-size: 1.45rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  letter-spacing: -0.015em;
}

.auth-card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 1.75rem;
}

.auth-gate-form {
  text-align: left;
}

.auth-field-group {
  margin-bottom: 1.25rem;
}

.auth-field-group .form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.45rem;
}

.auth-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.auth-input-icon {
  position: absolute;
  left: 1rem;
  color: var(--text-muted);
  pointer-events: none;
  display: flex;
  align-items: center;
}

.auth-password-input {
  width: 100%;
  padding: 0.8rem 2.85rem 0.8rem 2.85rem;
  font-size: 0.98rem;
  border-radius: var(--radius-md);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.auth-password-input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-primary-subtle);
  outline: none;
}

.auth-pw-toggle-btn {
  position: absolute;
  right: 0.5rem;
  background: none;
  border: none;
  padding: 0.45rem;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.auth-pw-toggle-btn:hover {
  color: var(--text-primary);
  background-color: var(--accent-primary-subtle);
}

.auth-options-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  font-size: 0.85rem;
}

.auth-checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
}

.auth-checkbox-label input[type="checkbox"] {
  accent-color: var(--accent-primary);
  width: 16px;
  height: 16px;
  cursor: pointer;
}

.auth-submit-btn {
  width: 100%;
  padding: 0.85rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 14px rgba(66, 50, 110, 0.2);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.auth-submit-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(66, 50, 110, 0.28);
}

.auth-submit-btn:active {
  transform: translateY(0);
}

.auth-submit-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

.auth-error-banner {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background-color: rgba(212, 67, 67, 0.12);
  border: 1px solid rgba(212, 67, 67, 0.35);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  margin-bottom: 1.25rem;
  color: var(--status-error);
  font-size: 0.86rem;
  text-align: left;
  animation: fadeIn 200ms ease;
}

.auth-error-banner svg {
  flex-shrink: 0;
  stroke: var(--status-error);
}

@media (max-width: 640px) {
  .auth-card {
    padding: 2.25rem 1.5rem 2rem;
  }
  .auth-card-title {
    font-size: 1.3rem;
  }
}

/* ==========================================================================
   Homepage & Menu Options Layout
   ========================================================================== */

.brand-link-wrap {
  text-decoration: none;
  color: inherit;
  display: inline-block;
}

.brand-link-wrap:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

.home-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-header-home {
  position: relative;
  border-bottom: 1px solid var(--border-subtle);
  padding: 1.5rem 0;
}

.home-main {
  flex: 1;
  display: flex;
  align-items: center;
  padding: 0 0 3rem;
}

.home-intro-box {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 1.5rem;
}

.home-eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  margin-bottom: 0.85rem;
}

.home-menu-heading {
  font-family: 'Fredoka', var(--font-sans);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 0.5rem;
  letter-spacing: -0.01em;
}

.home-menu-subheading {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
}

.home-menu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  align-items: stretch;
  gap: 1.5rem;
  max-width: 1080px;
  margin: 0 auto;
  width: 100%;
}

.home-menu-card {
  display: flex;
  flex-direction: column;
  background-color: var(--bg-card);
  border: 2px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.25rem 2.25rem 1.85rem;
  text-decoration: none;
  color: var(--text-primary);
  box-shadow: var(--card-shadow);
  transition: transform var(--transition-normal), 
              border-color var(--transition-normal), 
              box-shadow var(--transition-normal), 
              background-color var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.home-menu-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #3ea261, #84e899, #b29ce4);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.home-menu-card-planner::before {
  background: linear-gradient(90deg, #6E5B9A, #B29CE4, #D977A6);
}

.home-menu-card-habits::before {
  background: linear-gradient(90deg, #42326E, #8B5CF6, #B29CE4);
}

.home-menu-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-focus);
  background-color: var(--bg-elevated);
  box-shadow: 0 16px 36px rgba(66, 50, 110, 0.22);
}

.home-menu-card:hover::before {
  opacity: 1;
}

.home-menu-card:focus-visible {
  outline: 3px solid var(--border-focus);
  outline-offset: 4px;
}

.menu-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.menu-card-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  transition: transform var(--transition-normal), background-color var(--transition-normal);
}

.home-menu-card:hover .menu-card-icon-wrap {
  transform: scale(1.08) rotate(-2deg);
  background-color: var(--accent-primary-subtle);
}

.menu-card-icon {
  width: 28px;
  height: 28px;
  stroke: var(--text-primary);
}

.menu-card-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.menu-status-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-full);
}

.menu-status-badge.is-active {
  background-color: rgba(46, 159, 79, 0.16);
  color: var(--status-success);
  border: 1px solid rgba(46, 159, 79, 0.3);
}

.menu-status-badge.is-locked {
  background-color: rgba(217, 119, 166, 0.16);
  color: #D977A6;
  border: 1px solid rgba(217, 119, 166, 0.35);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

[data-theme="deep"] .menu-status-badge.is-locked,
[data-theme="dark"] .menu-status-badge.is-locked {
  background-color: rgba(217, 119, 166, 0.22);
  color: #F472B6;
  border-color: rgba(217, 119, 166, 0.45);
}

.menu-count-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  background-color: var(--bg-surface);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-full);
}

.menu-card-body {
  flex: 1;
}

.menu-card-title {
  font-family: 'Fredoka', var(--font-sans);
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 0.65rem;
  letter-spacing: -0.01em;
}

.menu-card-desc {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin: 0 0 1.5rem;
}

.menu-subfeatures-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-bottom: 1.75rem;
}

.subfeature-pill {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.55rem 0.85rem;
  border-radius: var(--radius-md);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  font-size: 0.88rem;
  color: var(--text-primary);
  font-weight: 500;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.home-menu-card:hover .subfeature-pill {
  border-color: var(--border-strong);
  background-color: var(--bg-card);
}

.subfeature-icon {
  width: 17px;
  height: 17px;
  stroke: var(--lavender-mid);
  fill: none;
  stroke-width: 2;
  flex-shrink: 0;
}

.menu-card-footer {
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
}

.menu-card-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Fredoka', var(--font-sans);
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: gap var(--transition-fast), color var(--transition-fast);
}

.cta-arrow {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-fast);
}

.home-menu-card:hover .cta-arrow {
  transform: translateX(4px);
}

.home-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 1.5rem 0;
  text-align: center;
}

.footer-copy {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Nav Home Button on Subpages */
.nav-home-btn {
  font-weight: 500;
}

.nav-home-btn:hover {
  background-color: var(--accent-primary-subtle);
}

@media (max-width: 640px) {
  .home-main {
    padding: 0.5rem 0 2.5rem;
  }
  .home-menu-card {
    min-width: 100%;
    padding: 1.65rem 1.25rem 1.5rem;
  }
  .menu-card-title {
    font-size: 1.6rem;
  }
}