/* ==========================================================================
   ImageCraft PRO - Modern Glassmorphic Stylesheet
   ========================================================================== */

:root {
  /* Font Families */
  --font-sans: 'Plus Jakarta Sans', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Transitions */
  --trans-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --trans-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --trans-spring: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 16px 36px rgba(0, 0, 0, 0.18);
}

/* Dark Theme (Default) */
[data-theme="dark"] {
  --bg-app: #080c14;
  --bg-card: rgba(15, 23, 42, 0.7);
  --bg-card-solid: #0f172a;
  --bg-card-hover: rgba(23, 33, 56, 0.85);
  --bg-input: rgba(15, 23, 42, 0.85);

  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-hover: rgba(255, 255, 255, 0.2);
  --border-glow: rgba(16, 185, 129, 0.35);

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --accent-primary: #10b981;
  --accent-primary-hover: #059669;
  --accent-secondary: #06b6d4;
  --accent-violet: #8b5cf6;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;

  --glow-1: rgba(16, 185, 129, 0.18);
  --glow-2: rgba(6, 182, 212, 0.14);

  --dropzone-bg: rgba(15, 23, 42, 0.5);
  --dropzone-border: rgba(16, 185, 129, 0.35);
  --dropzone-hover: rgba(16, 185, 129, 0.08);

  --banner-bg: rgba(16, 185, 129, 0.1);
  --banner-border: rgba(16, 185, 129, 0.25);
}

/* Light Theme */
[data-theme="light"] {
  --bg-app: #f5f8fa;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-solid: #ffffff;
  --bg-card-hover: rgba(255, 255, 255, 0.98);
  --bg-input: #ffffff;

  --border-color: rgba(0, 0, 0, 0.08);
  --border-color-hover: rgba(0, 0, 0, 0.18);
  --border-glow: rgba(5, 150, 105, 0.3);

  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #94a3b8;

  --accent-primary: #059669;
  --accent-primary-hover: #047857;
  --accent-secondary: #0891b2;
  --accent-violet: #7c3aed;
  --accent-amber: #d97706;
  --accent-rose: #e11d48;

  --glow-1: rgba(16, 185, 129, 0.12);
  --glow-2: rgba(6, 182, 212, 0.08);

  --dropzone-bg: rgba(255, 255, 255, 0.7);
  --dropzone-border: rgba(5, 150, 105, 0.35);
  --dropzone-hover: rgba(5, 150, 105, 0.05);

  --banner-bg: rgba(5, 150, 105, 0.08);
  --banner-border: rgba(5, 150, 105, 0.2);
}

/* --------------------------------------------------------------------------
   Resets & Global
   -------------------------------------------------------------------------- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-app);
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.6;
  position: relative;
  overflow-x: hidden;
  transition: background-color var(--trans-base), color var(--trans-base);
  -webkit-font-smoothing: antialiased;
}

/* Ambient Glow Orbs */
.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  transition: background var(--trans-base);
}

.bg-glow-1 {
  top: -120px;
  right: -80px;
  width: 550px;
  height: 550px;
  background: var(--glow-1);
}

.bg-glow-2 {
  bottom: -150px;
  left: -100px;
  width: 600px;
  height: 600px;
  background: var(--glow-2);
}

.app-container {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 28px 48px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  margin-bottom: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-sm);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(16, 185, 129, 0.4);
  flex-shrink: 0;
}

.brand-title {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
  line-height: 1.2;
}

.badge-pro {
  font-size: 0.65rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: #ffffff;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
}

.brand-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: block;
  margin-top: 2px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.icon-btn {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--trans-fast);
  text-decoration: none;
}

.icon-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-color-hover);
  transform: translateY(-2px);
  color: var(--accent-primary);
}

/* Theme Icons Visibility */
[data-theme="dark"] .sun-icon { display: block; }
[data-theme="dark"] .moon-icon { display: none; }
[data-theme="light"] .sun-icon { display: none; }
[data-theme="light"] .moon-icon { display: block; }

/* --------------------------------------------------------------------------
   Privacy Banner
   -------------------------------------------------------------------------- */
.privacy-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  margin-bottom: 24px;
  background: var(--banner-bg);
  border: 1px solid var(--banner-border);
  border-radius: var(--radius-md);
  font-size: 0.84rem;
  color: var(--text-muted);
  backdrop-filter: blur(12px);
}

.lock-icon {
  font-size: 1.1rem;
}

.privacy-banner strong {
  color: var(--accent-primary);
}

/* --------------------------------------------------------------------------
   1. Dropzone Section
   -------------------------------------------------------------------------- */
.dropzone-section {
  margin-bottom: 24px;
}

.dropzone {
  position: relative;
  border: 2px dashed var(--dropzone-border);
  background: var(--dropzone-bg);
  border-radius: var(--radius-xl);
  padding: 44px 20px;
  text-align: center;
  cursor: pointer;
  transition: all var(--trans-base);
  backdrop-filter: blur(16px);
  overflow: hidden;
}

.dropzone:hover,
.dropzone.dragover {
  background: var(--dropzone-hover);
  border-color: var(--accent-primary);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(16, 185, 129, 0.15);
}

.file-input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
  z-index: 10;
}

.dropzone-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  pointer-events: none;
}

.dropzone-icon {
  width: 68px;
  height: 68px;
  border-radius: var(--radius-lg);
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  transition: transform var(--trans-spring);
}

.dropzone:hover .dropzone-icon {
  transform: scale(1.1);
}

.dropzone-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-main);
}

.dropzone-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.browse-link {
  color: var(--accent-primary);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.dropzone-formats {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.fmt-tag {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  font-weight: 600;
  padding: 3px 9px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-dim);
}

[data-theme="light"] .fmt-tag {
  background: rgba(0, 0, 0, 0.06);
}

/* --------------------------------------------------------------------------
   2. Settings Card
   -------------------------------------------------------------------------- */
.settings-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  margin-bottom: 24px;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-sm);
}

.settings-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 8px;
}

.settings-title {
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-main);
}

.settings-note {
  font-size: 0.78rem;
  color: var(--text-dim);
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px;
}

.setting-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.setting-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

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

.setting-val-display {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--accent-primary);
}

/* Format Button Group */
.format-button-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.format-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10px 8px;
  background: var(--bg-card-solid);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--trans-fast);
}

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

.format-btn.active {
  background: rgba(16, 185, 129, 0.15);
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 1px var(--accent-primary);
}

.format-btn .btn-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
}

.format-btn.active .btn-name {
  color: var(--accent-primary);
}

.format-btn .btn-sub {
  font-size: 0.68rem;
  color: var(--text-dim);
  margin-top: 2px;
}

/* Slider Input */
.slider-input {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.15);
  outline: none;
  margin: 10px 0 6px;
}

[data-theme="light"] .slider-input {
  background: rgba(0, 0, 0, 0.1);
}

.slider-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-primary);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.5);
  transition: transform var(--trans-fast);
}

.slider-input::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.slider-ticks {
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  color: var(--text-dim);
}

/* Resize Controls */
.resize-controls {
  display: flex;
  gap: 10px;
}

.select-input,
.number-input {
  background: var(--bg-card-solid);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.88rem;
  padding: 10px 14px;
  outline: none;
  transition: border-color var(--trans-fast);
}

.select-input {
  flex: 1;
  cursor: pointer;
}

.select-input:focus,
.number-input:focus {
  border-color: var(--accent-primary);
}

.custom-width-wrap {
  display: flex;
  align-items: center;
  position: relative;
  width: 120px;
}

.custom-width-wrap.hidden {
  display: none;
}

.number-input {
  width: 100%;
  font-family: var(--font-mono);
  padding-right: 28px;
}

.input-unit {
  position: absolute;
  right: 10px;
  font-size: 0.78rem;
  color: var(--text-dim);
  pointer-events: none;
}

/* EXIF Checkbox */
.exif-item {
  grid-column: 1 / -1;
  padding-top: 8px;
  border-top: 1px solid var(--border-color);
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
}

.checkbox-input {
  width: 18px;
  height: 18px;
  margin-top: 3px;
  accent-color: var(--accent-primary);
  cursor: pointer;
}

.checkbox-text {
  display: flex;
  flex-direction: column;
}

.checkbox-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
}

.checkbox-desc {
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* --------------------------------------------------------------------------
   3. Summary Section
   -------------------------------------------------------------------------- */
.summary-section {
  margin-bottom: 24px;
  animation: slideDown 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.summary-section.hidden {
  display: none;
}

.summary-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 16px 24px;
  backdrop-filter: blur(16px);
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.12);
  flex-wrap: wrap;
  gap: 16px;
}

.summary-left {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.summary-stat {
  display: flex;
  flex-direction: column;
}

.summary-stat-label {
  font-size: 0.72rem;
  color: var(--text-dim);
  text-transform: uppercase;
}

.summary-stat-val {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
}

.summary-stat-val.highlight {
  color: var(--accent-primary);
}

.summary-divider {
  width: 1px;
  height: 28px;
  background: var(--border-color);
}

.summary-arrow {
  color: var(--text-dim);
  font-size: 1.1rem;
}

.summary-savings {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(16, 185, 129, 0.2);
  color: var(--accent-primary);
  border: 1px solid rgba(16, 185, 129, 0.35);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 800;
}

.summary-actions {
  display: flex;
  gap: 10px;
}

.action-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--trans-fast);
}

.action-btn.primary {
  background: var(--accent-primary);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.4);
}

.action-btn.primary:hover {
  background: var(--accent-primary-hover);
  transform: translateY(-2px);
}

.action-btn.danger {
  background: rgba(244, 63, 94, 0.12);
  border-color: rgba(244, 63, 94, 0.3);
  color: var(--accent-rose);
}

.action-btn.danger:hover {
  background: rgba(244, 63, 94, 0.2);
  transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   4. Gallery Section & Cards
   -------------------------------------------------------------------------- */
.gallery-section {
  flex: 1;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

.image-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(16px);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: all var(--trans-base);
  animation: fadeIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.image-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-md);
}

.card-preview {
  position: relative;
  width: 100%;
  height: 180px;
  background: rgba(0, 0, 0, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

[data-theme="light"] .card-preview {
  background: rgba(0, 0, 0, 0.05);
}

.card-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: transform var(--trans-fast);
}

.image-card:hover .card-img {
  transform: scale(1.03);
}

.badge-diff {
  position: absolute;
  top: 10px;
  right: 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  background: rgba(16, 185, 129, 0.85);
  color: #ffffff;
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.badge-diff.negative {
  background: rgba(245, 158, 11, 0.85);
}

.card-info {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.card-title-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
}

.card-filename {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 200px;
}

.card-dims {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-dim);
}

.card-metrics-table {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: rgba(0, 0, 0, 0.15);
  border-radius: var(--radius-sm);
  padding: 10px;
  gap: 8px;
  font-size: 0.78rem;
}

[data-theme="light"] .card-metrics-table {
  background: rgba(0, 0, 0, 0.03);
}

.metric-col {
  display: flex;
  flex-direction: column;
}

.metric-label {
  color: var(--text-dim);
  font-size: 0.7rem;
}

.metric-val {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text-main);
}

.metric-val.green {
  color: var(--accent-primary);
}

.card-actions {
  display: flex;
  gap: 8px;
  margin-top: auto;
}

.card-dl-btn {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 12px;
  background: var(--accent-primary);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--trans-fast);
  text-decoration: none;
}

.card-dl-btn:hover {
  background: var(--accent-primary-hover);
}

.card-del-btn {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--trans-fast);
}

.card-del-btn:hover {
  background: rgba(244, 63, 94, 0.1);
  border-color: rgba(244, 63, 94, 0.3);
  color: var(--accent-rose);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 50px 20px;
  background: var(--bg-card);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
}

.empty-state.hidden {
  display: none;
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: 12px;
}

.empty-state h3 {
  font-size: 1.15rem;
  margin-bottom: 6px;
}

.empty-state p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.sample-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-full);
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--accent-primary);
  font-size: 0.86rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--trans-fast);
}

.sample-btn:hover {
  background: rgba(16, 185, 129, 0.25);
  transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.app-footer {
  margin-top: 40px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-dim);
  padding: 18px 0;
  border-top: 1px solid var(--border-color);
}

/* --------------------------------------------------------------------------
   Toast
   -------------------------------------------------------------------------- */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(0);
  background: var(--bg-card-solid);
  color: var(--text-main);
  border: 1px solid var(--accent-primary);
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3), 0 0 15px rgba(16, 185, 129, 0.2);
  padding: 12px 24px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 1000;
  font-size: 0.88rem;
  font-weight: 600;
  transition: all var(--trans-spring);
  backdrop-filter: blur(16px);
}

.toast.hidden {
  opacity: 0;
  pointer-events: none;
  transform: translateX(-50%) translateY(20px);
}

.toast-icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
}

/* --------------------------------------------------------------------------
   Animations & Responsive
   -------------------------------------------------------------------------- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
  .app-container {
    padding: 16px;
  }

  .dropzone {
    padding: 30px 16px;
  }

  .settings-grid {
    grid-template-columns: 1fr;
  }

  .summary-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .summary-actions {
    width: 100%;
  }

  .summary-actions .action-btn {
    flex: 1;
    justify-content: center;
  }

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

/* --------------------------------------------------------------------------
   Header Guide & Sponsor Buttons
   -------------------------------------------------------------------------- */
.header-guide-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 13px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-main);
  font-size: 0.84rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--trans-fast);
}

.header-guide-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  transform: translateY(-1px);
}

.header-sponsor-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 13px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(244, 63, 94, 0.3);
  background: rgba(244, 63, 94, 0.12);
  color: #fb7185;
  font-size: 0.84rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--trans-fast);
}

.header-sponsor-btn:hover {
  background: rgba(244, 63, 94, 0.22);
  border-color: rgba(244, 63, 94, 0.5);
  transform: translateY(-1px);
}

/* --------------------------------------------------------------------------
   Footer Nav & Links
   -------------------------------------------------------------------------- */
.app-footer-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.app-footer-nav a,
.footer-link-btn {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.82rem;
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--trans-fast);
}

.app-footer-nav a:hover,
.footer-link-btn:hover {
  color: var(--accent-primary);
}

/* --------------------------------------------------------------------------
   Ad Container & Mock
   -------------------------------------------------------------------------- */
.ad-container {
  margin: 32px auto 8px;
  max-width: 900px;
  width: 100%;
  text-align: center;
}

.ad-label {
  font-size: 0.65rem;
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 6px;
  opacity: 0.7;
}

.ad-slot {
  background: var(--bg-card);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(12px);
  transition: all var(--trans-fast);
}

.ad-slot:hover {
  border-color: var(--border-color-hover);
}

.ad-mock {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--text-dim);
}

.ad-mock-icon {
  font-size: 1.5rem;
  opacity: 0.8;
}

.ad-mock-text {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.ad-mock-title {
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--text-muted);
}

.ad-mock-desc {
  font-size: 0.72rem;
  color: var(--text-dim);
}

/* --------------------------------------------------------------------------
   Modal Window
   -------------------------------------------------------------------------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  transition: opacity var(--trans-base);
}

.modal-backdrop.hidden {
  opacity: 0;
  pointer-events: none;
}

.modal-card {
  width: 100%;
  max-width: 540px;
  background: var(--bg-card-solid);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  overflow: hidden;
  backdrop-filter: blur(24px);
  animation: modalPop 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalPop {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 22px;
  border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
}

.modal-close-btn {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-dim);
  cursor: pointer;
  line-height: 1;
}

.modal-close-btn:hover {
  color: var(--text-main);
}

.modal-content {
  padding: 22px;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-height: 70vh;
  overflow-y: auto;
}

.modal-content h4 {
  color: var(--text-main);
  margin: 16px 0 6px;
  font-size: 0.95rem;
}

.modal-content h4:first-child {
  margin-top: 0;
}

.modal-content ul,
.modal-content ol {
  padding-left: 20px;
  margin-bottom: 12px;
}

.modal-content li {
  margin-bottom: 6px;
}

/* Support Card Styles inside Modal */
.support-card {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  margin: 16px 0;
}

[data-theme="light"] .support-card {
  background: rgba(0, 0, 0, 0.03);
}

.paypay-card {
  border-color: rgba(235, 52, 70, 0.35);
  background: rgba(235, 52, 70, 0.06);
}

.support-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.support-badge.paypay {
  background: #ff0033;
  color: #ffffff;
  font-weight: 700;
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: 4px;
}

.support-note {
  font-size: 0.72rem;
  color: var(--text-dim);
}

.support-card-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.copy-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
}

.copy-label {
  font-size: 0.78rem;
  color: var(--text-dim);
}

.copy-value {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--text-main);
  font-size: 0.95rem;
  flex: 1;
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--accent-primary);
  color: #ffffff;
  border: none;
  border-radius: 4px;
  padding: 6px 10px;
  font-size: 0.76rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--trans-fast);
}

.copy-btn:hover {
  background: var(--accent-primary-hover);
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
  margin-top: 10px;
}

.support-platform-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-main);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 600;
  transition: all var(--trans-fast);
}

.support-platform-btn:hover {
  border-color: var(--border-color-hover);
  transform: translateY(-2px);
}

.support-platform-btn.bmc:hover { color: #f59e0b; border-color: #f59e0b; }
.support-platform-btn.kofi:hover { color: #ef4444; border-color: #ef4444; }
.support-platform-btn.amazon:hover { color: #f97316; border-color: #f97316; }

/* X (Twitter) 応援ボタン */
.support-x-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 12px 16px;
  background: #0f1419;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  font-size: 0.86rem;
  font-weight: 600;
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transition: all var(--trans-fast);
}

.support-x-btn:hover {
  background: #1a232c;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25);
  color: #ffffff;
}

/* 準備中の支援ボタン */
.support-platform-btn.disabled,
.support-platform-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed !important;
  pointer-events: none !important;
  background: rgba(148, 163, 184, 0.08) !important;
  border-color: var(--border-color) !important;
  color: var(--text-dim) !important;
  transform: none !important;
  box-shadow: none !important;
}

.status-tag {
  font-size: 0.68rem;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(148, 163, 184, 0.2);
  color: var(--text-dim);
  font-weight: 500;
  margin-left: 4px;
}

/* ==========================================
   ImageCraft PRO：スマホ表示ヘッダー崩れ修正
   ========================================== */
@media (max-width: 768px) {
  .app-header {
    flex-direction: column;
    align-items: stretch !important;
    gap: 12px !important;
  }

  .header-actions {
    width: 100% !important;
    justify-content: flex-end !important;
    flex-wrap: wrap !important;
    gap: 6px !important;
  }

  .header-guide-btn,
  .header-sponsor-btn {
    font-size: 0.78rem !important;
    padding: 6px 10px !important;
    white-space: nowrap !important;
  }
}