@import url('https://fonts.googleapis.com/css2?family=Caveat:wght@600;700&family=Cinzel:wght@600;700;900&family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;700&family=Nunito:wght@500;700;800;900&family=Playfair+Display:ital,wght@0,600;0,700;1,400&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Space+Grotesk:wght@500;600;700&family=Syne:wght@700;800&display=swap');

:root {
  /* System Global Variables (App Shell) */
  --font-system: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --color-dark-bg: #0b0f19;
  --color-dark-surface: #111827;
  --color-dark-card: #1f2937;
  --color-dark-border: rgba(255, 255, 255, 0.1);
  --color-dark-text: #f3f4f6;
  --color-dark-muted: #9ca3af;
  --color-primary-accent: #6366f1;
  --color-primary-hover: #4f46e5;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.25), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 350ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-family: var(--font-system);
  background-color: var(--color-dark-bg);
  color: var(--color-dark-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background: radial-gradient(circle at 50% 0%, #1e1b4b 0%, #0b0f19 70%);
  background-attachment: fixed;
}

/* App Container */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  width: 100%;
}

/* Top App Header & Navbar */
.app-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11, 15, 25, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 0.75rem 1.5rem;
}

.header-inner {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.brand-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, #6366f1, #a855f7);
  color: #ffffff;
  font-size: 1.25rem;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
}

.brand-info h1 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-info h1 span.highlight {
  background: linear-gradient(90deg, #818cf8, #c084fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-info p {
  font-size: 0.8rem;
  color: var(--color-dark-muted);
}

/* Exact Dropdown matching user's image screenshot */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.theme-selector-container {
  position: relative;
}

.theme-dropdown-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  background: rgba(30, 41, 59, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #f8fafc;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.theme-dropdown-btn:hover {
  background: rgba(51, 65, 85, 0.95);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
}

.theme-dropdown-btn .icon-paint {
  font-size: 1rem;
}

.theme-dropdown-btn .chevron-icon {
  font-size: 0.75rem;
  transition: transform var(--transition-fast);
  opacity: 0.7;
}

.theme-dropdown-btn.active .chevron-icon {
  transform: rotate(180deg);
}

/* Custom Dropdown Menu matching user screenshot precisely */
.theme-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 280px;
  max-height: 480px;
  overflow-y: auto;
  background: #11141a;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.8), 0 0 0 1px rgba(255, 255, 255, 0.05);
  padding: 0.5rem;
  z-index: 1100;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px) scale(0.98);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.theme-menu.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.theme-menu-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.75rem 1rem;
  border: none;
  background: transparent;
  color: #e2e8f0;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  text-align: left;
  border-radius: 8px;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.theme-menu-item:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
}

.theme-menu-item.selected {
  background: rgba(99, 102, 241, 0.18);
  color: #a5b4fc;
  font-weight: 600;
}

.theme-menu-item .style-color-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* Language Switcher Button Group */
.lang-switch-container {
  display: inline-flex;
  align-items: center;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  padding: 0.2rem;
  gap: 0.2rem;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-full);
  background: transparent;
  border: none;
  color: #94a3b8;
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lang-btn:hover {
  color: #ffffff;
}

.lang-btn.active {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #ffffff;
  box-shadow: 0 2px 6px rgba(99, 102, 241, 0.4);
}

/* Secondary header pills (mimicking the Mimo 2.5 pill in screenshot) */
.pill-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-full);
  background: rgba(15, 23, 42, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #cbd5e1;
  font-size: 0.825rem;
  font-weight: 500;
}

/* Presenter Mode Button */
.btn-presenter {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, #ef4444, #f97316);
  color: #ffffff;
  font-weight: 600;
  font-size: 0.825rem;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 8px rgba(239, 68, 68, 0.35);
}

.btn-presenter:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.btn-presenter.active {
  background: linear-gradient(135deg, #10b981, #059669);
  box-shadow: 0 0 15px rgba(16, 185, 129, 0.5);
}

/* Sub-header Navigation Tabs */
.app-tabs-bar {
  background: rgba(15, 23, 42, 0.6);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding: 0.5rem 1.5rem;
}

.tabs-inner {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  overflow-x: auto;
}

.nav-tabs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
}

.nav-tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  background: transparent;
  color: var(--color-dark-muted);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-tab-btn:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.05);
}

.nav-tab-btn.active {
  color: #ffffff;
  background: rgba(99, 102, 241, 0.2);
  border-color: rgba(99, 102, 241, 0.4);
  font-weight: 600;
}

/* Keyboard shortcut hint */
.kbd-hint {
  font-size: 0.75rem;
  color: var(--color-dark-muted);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

kbd {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  padding: 0.1rem 0.35rem;
  font-size: 0.7rem;
  font-family: 'JetBrains Mono', monospace;
  color: #f1f5f9;
}

/* Main Content Area */
.app-main {
  flex: 1;
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem;
}

/* Tab Views */
.tab-view {
  display: none;
  animation: fadeIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.tab-view.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Banner / Style Title Area */
.style-hero-banner {
  background: linear-gradient(135deg, rgba(30, 27, 75, 0.5), rgba(15, 23, 42, 0.7));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 1.5rem 2rem;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  position: relative;
  overflow: hidden;
}

.style-hero-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 250px;
  height: 250px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.25), transparent 70%);
  filter: blur(40px);
  pointer-events: none;
}

.style-title-group {
  position: relative;
  z-index: 1;
}

.style-category-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.style-name-heading {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #ffffff;
  margin-bottom: 0.25rem;
}

.style-thai-name {
  font-size: 1.1rem;
  color: #c7d2fe;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.style-tagline-text {
  font-size: 0.95rem;
  color: #94a3b8;
  max-width: 700px;
}

/* Quick Style Navigator Arrows */
.style-quick-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  position: relative;
  z-index: 1;
}

.nav-arrow-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #ffffff;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 1.1rem;
}

.nav-arrow-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: scale(1.08);
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1.25rem;
  background: #1e293b;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  font-size: 0.875rem;
  font-weight: 500;
  opacity: 0;
  transform: translateY(16px);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: auto;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.toast-icon {
  font-size: 1.1rem;
  color: var(--color-success);
}

/* Responsive adjustments */
@media (max-width: 900px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .header-actions {
    width: 100%;
    justify-content: space-between;
  }
  .style-hero-banner {
    flex-direction: column;
    align-items: flex-start;
  }
  .style-name-heading {
    font-size: 1.6rem;
  }
}