/* ==========================================================================
   AI MEME GENERATOR - MODERN DARK SAAS DESIGN SYSTEM (PURE CSS3)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Impact&display=swap');

:root {
  --bg-primary: #0B0F17;
  --bg-secondary: #111827;
  --bg-surface: #161F30;
  --bg-surface-elevated: #1E293B;
  --bg-input: #0F172A;
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.15);
  --border-accent: rgba(99, 102, 241, 0.4);

  --accent-primary: #6366F1;
  --accent-primary-hover: #4F46E5;
  --accent-glow: rgba(99, 102, 241, 0.25);
  
  --accent-viral: #10B981;
  --accent-amber: #F59E0B;
  --accent-pink: #EC4899;
  --accent-cyan: #06B6D4;

  --text-main: #F8FAFC;
  --text-muted: #94A3B8;
  --text-subtle: #64748B;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 25px -3px rgba(99, 102, 241, 0.3);
}

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

html {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-main);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
  background: radial-gradient(circle at 50% 0%, #171d31 0%, #0B0F17 65%);
  background-attachment: fixed;
  overflow-x: hidden;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  color: var(--text-main);
}

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

.font-impact {
  font-family: 'Impact', 'Arial Black', sans-serif;
}

/* Container */
.container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.container-sm {
  max-width: 860px;
}

/* Navigation */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 15, 23, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all 0.2s ease;
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.025em;
  color: var(--text-main);
}

.logo-badge {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #EC4899 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.nav-links {
  display: none;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

@media (min-width: 992px) {
  .nav-links {
    display: flex;
  }
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.15s ease;
  position: relative;
  padding: 0.5rem 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-main);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent-primary);
  border-radius: var(--radius-full);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.mobile-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-sm);
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
}

@media (min-width: 992px) {
  .mobile-toggle {
    display: none;
  }
}

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  top: 4.5rem;
  inset-inline: 0;
  bottom: 0;
  background: var(--bg-primary);
  z-index: 49;
  padding: 1.5rem;
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
}

.mobile-drawer.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.drawer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.drawer-link {
  font-size: 1.125rem;
  font-weight: 600;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
}

.drawer-link:hover, .drawer-link.active {
  color: var(--text-main);
  border-color: var(--accent-primary);
  background: var(--bg-surface-elevated);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
  user-select: none;
}

.btn-primary {
  background: linear-gradient(135deg, #6366F1 0%, #4F46E5 100%);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #4F46E5 0%, #4338CA 100%);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
  transform: translateY(-1px);
}

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

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border-medium);
}

.btn-secondary:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--accent-primary);
  color: #FFFFFF;
}

.btn-viral {
  background: linear-gradient(135deg, #10B981 0%, #059669 100%);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
}

.btn-viral:hover {
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.5);
  transform: translateY(-1px);
}

.btn-sm {
  font-size: 0.8125rem;
  padding: 0.375rem 0.75rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  font-size: 1.0625rem;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius-lg);
}

.btn-icon {
  padding: 0.625rem;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
}

.btn-icon:hover {
  color: var(--text-main);
  border-color: var(--border-medium);
  background: var(--bg-surface-elevated);
}

/* Badges & Chips */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-indigo {
  background: rgba(99, 102, 241, 0.15);
  color: #818CF8;
  border: 1px solid rgba(99, 102, 241, 0.3);
}

.badge-emerald {
  background: rgba(16, 185, 129, 0.15);
  color: #34D399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-amber {
  background: rgba(245, 158, 11, 0.15);
  color: #FBBF24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

/* Cards & Panels */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  transition: all 0.2s ease;
}

.card:hover {
  border-color: var(--border-medium);
}

.card-elevated {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
}

/* Hero Section */
.hero {
  padding: 4.5rem 0 3rem;
  text-align: center;
  position: relative;
}

.hero-title {
  font-size: clamp(2.25rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.text-gradient {
  background: linear-gradient(135deg, #FFFFFF 0%, #94A3B8 50%, #818CF8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-viral {
  background: linear-gradient(135deg, #818CF8 0%, #C084FC 50%, #F472B6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 2rem;
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

/* Feature Grid */
.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-cols-2 {
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

.grid-cols-3 {
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

.grid-cols-4 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

@media (min-width: 640px) {
  .grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 768px) {
  .grid-cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .grid-cols-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* Studio Canvas Layout */
.studio-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  padding: 1.5rem 0;
}

@media (min-width: 1024px) {
  .studio-layout {
    grid-template-columns: 320px 1fr 340px;
    align-items: start;
  }
}

.canvas-viewport {
  width: 100%;
  max-width: 100%;
  position: relative;
  background: #000000;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
  user-select: none;
  margin: 0 auto;
}

canvas,
#hero-canvas,
#studio-canvas,
#meme-canvas {
  width: 100% !important;
  max-width: 100% !important;
  height: auto !important;
  aspect-ratio: 1 / 1;
  display: block;
  object-fit: contain;
  touch-action: none;
  cursor: grab;
}

canvas:active,
#hero-canvas:active,
#studio-canvas:active,
#meme-canvas:active {
  cursor: grabbing;
}

@media (max-width: 640px) {
  .canvas-viewport {
    min-height: auto !important;
  }
}

/* Control Panel */
.panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.panel-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.control-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.input-text, .textarea, .select {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.625rem 0.875rem;
  font-size: 0.875rem;
  color: var(--text-main);
  outline: none;
  transition: border-color 0.15s ease;
}

.input-text:focus, .textarea:focus, .select:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 2px var(--accent-glow);
}

.textarea {
  resize: vertical;
  min-height: 80px;
}

/* Presets Bar */
.presets-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

.preset-btn {
  padding: 0.5rem;
  border-radius: var(--radius-md);
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  text-align: center;
  transition: all 0.15s ease;
}

.preset-btn:hover, .preset-btn.active {
  background: var(--bg-surface-elevated);
  border-color: var(--accent-primary);
  color: var(--text-main);
}

/* Aspect Ratio Buttons */
.aspect-ratios {
  display: flex;
  gap: 0.375rem;
}

.aspect-btn {
  flex: 1;
  padding: 0.5rem 0.25rem;
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  text-align: center;
}

.aspect-btn.active {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #FFFFFF;
}

/* Toast Notifications */
#toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.toast {
  background: var(--bg-surface-elevated);
  color: var(--text-main);
  border: 1px solid var(--border-medium);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  gap: 0.625rem;
  animation: toastSlideIn 0.25s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  pointer-events: auto;
}

@keyframes toastSlideIn {
  from {
    transform: translateY(100%) scale(0.9);
    opacity: 0;
  }
  to {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
}

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  max-width: 760px;
  width: 100%;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
}

/* Template Card */
.template-card {
  position: relative;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all 0.2s ease;
  cursor: pointer;
}

.template-card:hover {
  border-color: var(--accent-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.template-img-wrap {
  aspect-ratio: 1 / 1;
  background: #000000;
  overflow: hidden;
  position: relative;
}

.template-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.template-card:hover .template-img-wrap img {
  transform: scale(1.05);
}

.template-info {
  padding: 0.75rem;
}

.template-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Footer */
.footer {
  margin-top: auto;
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-primary);
  padding: 3.5rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 2.5rem;
  margin-bottom: 3rem;
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-link {
  color: var(--text-muted);
  font-size: 0.875rem;
  transition: color 0.15s ease;
}

.footer-link:hover {
  color: var(--text-main);
}

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  color: var(--text-subtle);
  font-size: 0.8125rem;
}

@media (min-width: 640px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* Accordion */
.accordion-item {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
  background: var(--bg-surface);
  overflow: hidden;
}

.accordion-trigger {
  width: 100%;
  padding: 1.25rem 1.5rem;
  text-align: left;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.accordion-content {
  padding: 0 1.5rem 1.25rem;
  color: var(--text-muted);
  font-size: 0.9375rem;
  display: none;
}

.accordion-item.open .accordion-content {
  display: block;
}

.accordion-icon {
  transition: transform 0.2s ease;
}

.accordion-item.open .accordion-icon {
  transform: rotate(180deg);
}