/* ==========================================================================
   Yuuki's DevLab Portal - Modern Glassmorphic Stylesheet
   ========================================================================== */

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

  --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-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 16px 36px rgba(0, 0, 0, 0.16);
}

/* Dark Theme (Default) */
[data-theme="dark"] {
  --bg-app: #080c14;
  --bg-card: rgba(15, 23, 42, 0.65);
  --bg-card-hover: rgba(23, 33, 56, 0.85);
  --bg-card-solid: #0f172a;
  --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(99, 102, 241, 0.3);

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

  --accent-primary: #6366f1;
  --accent-primary-hover: #4f46e5;
  --accent-emerald: #10b981;
  --accent-violet: #8b5cf6;
  --accent-amber: #f59e0b;
  --accent-cyan: #06b6d4;

  --glow-1: rgba(99, 102, 241, 0.18);
  --glow-2: rgba(139, 92, 246, 0.15);
  --glow-3: rgba(16, 185, 129, 0.12);

  --tag-bg: rgba(255, 255, 255, 0.06);
  --tag-color: #cbd5e1;
  --modal-bg: rgba(15, 23, 42, 0.95);
}

/* Light Theme */
[data-theme="light"] {
  --bg-app: #f6f8fc;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(255, 255, 255, 0.98);
  --bg-card-solid: #ffffff;
  --bg-input: #ffffff;

  --border-color: rgba(0, 0, 0, 0.08);
  --border-color-hover: rgba(0, 0, 0, 0.18);
  --border-glow: rgba(79, 70, 229, 0.25);

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

  --accent-primary: #4f46e5;
  --accent-primary-hover: #4338ca;
  --accent-emerald: #059669;
  --accent-violet: #7c3aed;
  --accent-amber: #d97706;
  --accent-cyan: #0891b2;

  --glow-1: rgba(99, 102, 241, 0.12);
  --glow-2: rgba(217, 70, 239, 0.08);
  --glow-3: rgba(16, 185, 129, 0.08);

  --tag-bg: rgba(0, 0, 0, 0.05);
  --tag-color: #475569;
  --modal-bg: rgba(255, 255, 255, 0.98);
}

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

html {
  scroll-behavior: smooth;
}

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 {
  top: 35%;
  left: -150px;
  width: 600px;
  height: 600px;
  background: var(--glow-2);
}

.bg-glow-3 {
  bottom: -100px;
  right: 15%;
  width: 500px;
  height: 500px;
  background: var(--glow-3);
}

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

/* --------------------------------------------------------------------------
   1. Header
   -------------------------------------------------------------------------- */
.portal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  margin-bottom: 40px;
  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-link {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: inherit;
}

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-violet));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 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-lab {
  font-size: 0.65rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-emerald));
  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;
}

/* --------------------------------------------------------------------------
   2. Hero Section
   -------------------------------------------------------------------------- */
.hero-section {
  text-align: center;
  padding: 24px 16px 40px;
  max-width: 860px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.25);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent-primary);
  margin-bottom: 20px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    transform: scale(0.95);
    opacity: 0.7;
  }

  50% {
    transform: scale(1.3);
    opacity: 1;
  }

  100% {
    transform: scale(0.95);
    opacity: 0.7;
  }
}

.hero-title {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.gradient-text {
  background: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #06b6d4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 28px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 36px;
}

.stat-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  backdrop-filter: blur(12px);
  font-size: 0.85rem;
  box-shadow: var(--shadow-sm);
}

.pill-number {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent-primary);
}

.pill-check {
  color: var(--accent-emerald);
  font-weight: bold;
}

.pill-label {
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   Filter & Search Bar
   -------------------------------------------------------------------------- */
.filter-wrapper {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
  width: 100%;
}

.search-box {
  position: relative;
  width: 100%;
  max-width: 560px;
}

.search-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
  pointer-events: none;
}

.search-box input {
  width: 100%;
  padding: 14px 44px 14px 48px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  backdrop-filter: blur(16px);
  outline: none;
  box-shadow: var(--shadow-sm);
  transition: all var(--trans-fast);
}

.search-box input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.search-clear {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--text-dim);
  cursor: pointer;
  padding: 4px 8px;
}

.search-clear:hover {
  color: var(--text-main);
}

.search-clear.hidden {
  display: none;
}

.category-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  padding: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  backdrop-filter: blur(16px);
}

.tab-btn {
  padding: 8px 18px;
  border-radius: var(--radius-full);
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--trans-fast);
}

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

.tab-btn.active {
  background: var(--accent-primary);
  color: #ffffff;
  box-shadow: 0 2px 10px rgba(99, 102, 241, 0.35);
}

/* --------------------------------------------------------------------------
   3. Tools Grid & Cards
   -------------------------------------------------------------------------- */
.tools-section {
  margin-top: 10px;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding: 0 4px;
}

.section-title {
  font-size: 1.3rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-count {
  font-size: 0.85rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

.tool-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 26px;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow-sm);
  transition: all var(--trans-base);
  overflow: hidden;
}

.tool-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-lg);
}

.tool-card.live-card:hover {
  border-color: var(--border-glow);
  box-shadow: 0 12px 30px rgba(99, 102, 241, 0.2);
}

.card-glow {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.6), transparent);
  opacity: 0;
  transition: opacity var(--trans-base);
}

.tool-card:hover .card-glow {
  opacity: 1;
}

/* Card Header */
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}

.tool-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.icon-indigo {
  background: rgba(99, 102, 241, 0.16);
  color: var(--accent-primary);
}

.icon-emerald {
  background: rgba(16, 185, 129, 0.16);
  color: var(--accent-emerald);
}

.icon-violet {
  background: rgba(139, 92, 246, 0.16);
  color: var(--accent-violet);
}

.icon-amber {
  background: rgba(245, 158, 11, 0.16);
  color: var(--accent-amber);
}

/* Badges */
.badge-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.74rem;
  font-weight: 600;
}

.status-live {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  box-shadow: 0 0 6px var(--accent-emerald);
}

.status-dev {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.status-concept {
  background: rgba(148, 163, 184, 0.15);
  color: var(--text-dim);
  border: 1px solid var(--border-color);
}

/* Card Body */
.card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.tool-category {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  margin-bottom: 4px;
}

.tool-name {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-main);
}

.tool-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 16px;
  flex: 1;
}

.tool-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}

.tag {
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  background: var(--tag-bg);
  color: var(--tag-color);
  font-family: var(--font-mono);
}

/* Card Footer & Action Buttons */
.card-footer {
  margin-top: auto;
}

.tool-link-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 12px 18px;
  border-radius: var(--radius-md);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  background: var(--accent-primary);
  color: #ffffff;
  border: 1px solid var(--accent-primary);
  transition: all var(--trans-fast);
  cursor: pointer;
}

.tool-link-btn:hover {
  background: var(--accent-primary-hover);
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
  transform: translateY(-1px);
}

.tool-link-btn svg {
  transition: transform var(--trans-fast);
}

.tool-link-btn:hover svg {
  transform: translateX(4px);
}

.tool-link-btn.disabled {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-color);
  color: var(--text-dim);
  cursor: not-allowed;
}

[data-theme="light"] .tool-link-btn.disabled {
  background: rgba(0, 0, 0, 0.04);
}

.tool-link-btn.disabled:hover {
  transform: none;
  box-shadow: none;
}

.tool-link-btn.disabled svg {
  transform: none;
}

/* No Results State */
.no-results {
  text-align: center;
  padding: 60px 20px;
  background: var(--bg-card);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
  margin-top: 20px;
}

.no-results.hidden {
  display: none;
}

.no-results-icon {
  font-size: 2.8rem;
  margin-bottom: 12px;
}

.no-results h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.no-results p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 20px;
}

.reset-filter-btn {
  padding: 9px 20px;
  border-radius: var(--radius-full);
  background: var(--accent-primary);
  color: white;
  border: none;
  font-weight: 600;
  cursor: pointer;
}

/* --------------------------------------------------------------------------
   4. Footer
   -------------------------------------------------------------------------- */
.portal-footer {
  margin-top: 80px;
  padding-top: 40px;
  border-top: 1px solid var(--border-color);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.footer-brand {
  max-width: 380px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}

.footer-desc {
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.6;
}

.footer-nav {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
}

.nav-title {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  margin-bottom: 12px;
}

.nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.nav-list a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.85rem;
  transition: color var(--trans-fast);
}

.nav-list a:hover {
  color: var(--accent-primary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
  font-size: 0.8rem;
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: 12px;
}

.privacy-note {
  font-size: 0.78rem;
}

/* --------------------------------------------------------------------------
   Modal Window
   -------------------------------------------------------------------------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  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(--modal-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  backdrop-filter: blur(24px);
  animation: modalScaleUp 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalScaleUp {
  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: 20px 24px;
  border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
  font-size: 1.15rem;
  font-weight: 700;
}

.modal-close-btn {
  background: none;
  border: none;
  font-size: 1.6rem;
  color: var(--text-dim);
  cursor: pointer;
  line-height: 1;
}

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

.modal-content {
  padding: 24px;
  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;
}

/* --------------------------------------------------------------------------
   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-emerald);
  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-emerald);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
}

/* --------------------------------------------------------------------------
   Responsive Queries
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  .portal-container {
    padding: 16px 16px 36px;
  }

  .portal-header {
    padding: 14px 18px;
    margin-bottom: 24px;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-br {
    display: none;
  }

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

  .footer-top {
    flex-direction: column;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}

/* --------------------------------------------------------------------------
   Header Sponsor Button
   -------------------------------------------------------------------------- */
.header-sponsor-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  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(-2px);
  box-shadow: 0 4px 12px rgba(244, 63, 94, 0.25);
}

.header-sponsor-btn svg {
  fill: rgba(244, 63, 94, 0.2);
}

/* --------------------------------------------------------------------------
   Responsive Ad Container & Placeholder
   -------------------------------------------------------------------------- */
.ad-container {
  margin: 40px auto 10px;
  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: 24px;
  min-height: 100px;
  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: 1.6rem;
  opacity: 0.8;
}

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

.ad-mock-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
}

.ad-mock-desc {
  font-size: 0.74rem;
  color: var(--text-dim);
}

/* --------------------------------------------------------------------------
   Support Modal Styles
   -------------------------------------------------------------------------- */
.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-solid);
  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-solid);
  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);
  background: var(--bg-card-hover);
}

.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;
}

/* ==========================================
   スマホ表示（モバイル）ヘッダー崩れ修正
   ========================================== */
@media screen and (max-width: 768px) {
  .portal-header {
    flex-direction: column;
    gap: 12px;
    align-items: stretch;
  }

  .header-actions {
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 6px;
  }

  .header-sponsor-btn {
    font-size: 0.78rem;
    padding: 6px 10px;
  }
}