:root {
  --primary-400: #60a5fa;
  --primary-500: #3b82f6;
  --primary-600: #2563eb;
  --primary-700: #1d4ed8;
  --secondary-400: #2dd4bf;
  --secondary-500: #14b8a6;
  --secondary-600: #0d9488;
  --accent-purple: #8b5cf6;
  --success-500: #10b981;
  --danger-500: #ef4444;

  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --bg-elevated: #ffffff;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #64748b;

  --border-light: #e2e8f0;
  --border-medium: #cbd5e1;

  --shadow-sm: 0 1px 2px 0 rgba(0,0,0,.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.1);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0,0,0,.25);

  --glow-primary: 0 0 20px rgba(59,130,246,.4);

  --radius-sm: .375rem;
  --radius-md: .5rem;
  --radius-lg: .75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  --font-sans: 'Cairo', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --transition-base: 250ms cubic-bezier(.4,0,.2,1);
  --transition-slow: 350ms cubic-bezier(.4,0,.2,1);
  --transition-bounce: 500ms cubic-bezier(.34,1.56,.64,1);

  --z-sticky: 1020;
}

[data-theme="dark"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --bg-elevated: #1e293b;

  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-tertiary: #94a3b8;

  --border-light: #334155;
  --border-medium: #475569;

  --shadow-sm: 0 1px 2px 0 rgba(0,0,0,.3);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,.4);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.5);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,.6);
  --shadow-2xl: 0 25px 50px -12px rgba(0,0,0,.7);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
  user-select: none;
  -webkit-user-select: none;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 40% at 15% 0%, rgba(59,130,246,.1) 0%, transparent 60%),
    radial-gradient(ellipse 50% 30% at 85% 10%, rgba(20,184,166,.1) 0%, transparent 55%),
    radial-gradient(ellipse 40% 25% at 50% 100%, rgba(139,92,246,.06) 0%, transparent 60%);
  z-index: 0;
  pointer-events: none;
}

[data-theme="dark"] body::before {
  background:
    radial-gradient(ellipse 70% 40% at 15% 0%, rgba(59,130,246,.15) 0%, transparent 60%),
    radial-gradient(ellipse 50% 30% at 85% 10%, rgba(20,184,166,.12) 0%, transparent 55%),
    radial-gradient(ellipse 40% 25% at 50% 100%, rgba(139,92,246,.08) 0%, transparent 60%);
}

img { pointer-events: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
  position: relative;
  z-index: 1;
}

.header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  padding: .875rem 0;
  background: rgba(255,255,255,.65);
  backdrop-filter: blur(24px) saturate(200%);
  -webkit-backdrop-filter: blur(24px) saturate(200%);
  border-bottom: 1px solid rgba(226,232,240,.6);
  box-shadow: 0 1px 12px rgba(0,0,0,.06);
  transition: all var(--transition-base);
}

[data-theme="dark"] .header {
  background: rgba(15,23,42,.72);
  border-bottom-color: rgba(51,65,85,.7);
}

.header.scrolled {
  padding: .625rem 0;
  box-shadow: var(--shadow-lg);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: .75rem;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 800;
  font-size: 1.375rem;
  letter-spacing: -.02em;
  transition: transform var(--transition-base);
  flex-shrink: 0;
}

.logo:hover { transform: scale(1.02); }

.logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  box-shadow: var(--shadow-md), 0 0 18px rgba(59,130,246,.3);
  transition: all var(--transition-bounce);
  position: relative;
  overflow: hidden;
}

.logo-icon::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg, transparent 30%, rgba(255,255,255,.25) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform .5s ease;
}

.logo:hover .logo-icon {
  transform: rotate(-6deg) scale(1.08);
  box-shadow: var(--shadow-xl), var(--glow-primary);
}

.logo:hover .logo-icon::after { transform: translateX(100%); }

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .625rem 1.25rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: .9375rem;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.back-btn span { position: relative; z-index: 1; }
.back-btn svg { position: relative; z-index: 1; transition: transform var(--transition-base); }

.back-btn:hover {
  color: var(--primary-600);
  border-color: var(--primary-400);
  transform: translateX(-4px);
  box-shadow: var(--shadow-md);
}

[data-theme="dark"] .back-btn:hover { color: var(--primary-400); }

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

main { flex: 1; padding: 2.5rem 0; }

.breadcrumb {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .8125rem;
  color: var(--text-tertiary);
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--primary-500);
  text-decoration: none;
  transition: color var(--transition-base);
  font-weight: 600;
}

[data-theme="dark"] .breadcrumb a { color: var(--primary-400); }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb-sep { color: var(--border-medium); }

.hero-img-wrap {
  width: 100%;
  aspect-ratio: 16/7;
  overflow: hidden;
  border-radius: var(--radius-2xl);
  margin-bottom: 2rem;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-xl);
  background: var(--bg-tertiary);
  position: relative;
}

.hero-img-wrap::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-500), var(--secondary-500));
  z-index: 2;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.meta-row {
  display: flex;
  align-items: center;
  gap: .75rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  background: rgba(59,130,246,.08);
  color: var(--primary-600);
  border: 1px solid rgba(59,130,246,.15);
  border-radius: var(--radius-full);
  padding: .35rem 1rem;
  font-size: .8125rem;
  font-weight: 700;
}

[data-theme="dark"] .badge {
  color: var(--primary-400);
  background: rgba(59,130,246,.1);
  border-color: rgba(59,130,246,.2);
}

.badge-sub {
  background: rgba(139,92,246,.08);
  color: #7c3aed;
  border-color: rgba(139,92,246,.15);
}

[data-theme="dark"] .badge-sub {
  color: #a78bfa;
  background: rgba(139,92,246,.1);
  border-color: rgba(139,92,246,.2);
}

h1 {
  font-size: clamp(1.625rem, 4vw, 2.5rem);
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: -.02em;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary-600), var(--secondary-600), var(--accent-purple));
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 5s ease infinite;
}

[data-theme="dark"] .gradient-text {
  background: linear-gradient(135deg, var(--primary-400), var(--secondary-400), var(--accent-purple));
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.desc {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 2rem;
  max-width: 720px;
}

.prompt-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-md);
  position: relative;
}

.prompt-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-500), var(--secondary-500));
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-slow);
}

.prompt-card:focus-within::before { transform: scaleX(1); }

.prompt-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-light);
  background: var(--bg-secondary);
}

.prompt-card-header h2 {
  font-size: .9375rem;
  font-weight: 700;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: .5rem;
}

.prompt-card-body { padding: 1.5rem; }

.prompt-text {
  font-size: .9375rem;
  line-height: 1.9;
  color: var(--text-primary);
  white-space: pre-wrap;
  word-break: break-word;
  font-family: var(--font-sans);
  user-select: text;
  -webkit-user-select: text;
}

.copy-btn {
  width: 100%;
  padding: 1rem 2rem;
  background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
  color: #fff;
  border: none;
  border-radius: var(--radius-xl);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  font-weight: 800;
  cursor: pointer;
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .625rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.copy-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--primary-600), var(--secondary-600));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.copy-btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl), var(--glow-primary);
}

.copy-btn:hover::before { opacity: 1; }
.copy-btn:active { transform: translateY(-1px); }
.copy-btn svg { position: relative; z-index: 1; }
.copy-btn span { position: relative; z-index: 1; }

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.info-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 1.125rem 1.25rem;
  display: flex;
  align-items: center;
  gap: .875rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.info-card:hover {
  border-color: rgba(59,130,246,.3);
  box-shadow: var(--shadow-md), 0 0 12px rgba(59,130,246,.1);
  transform: translateY(-2px);
}

.info-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.info-icon.blue {
  background: rgba(59,130,246,.1);
  color: var(--primary-500);
}

[data-theme="dark"] .info-icon.blue {
  background: rgba(59,130,246,.15);
  color: var(--primary-400);
}

.info-card h3 {
  font-size: .75rem;
  font-weight: 600;
  color: var(--text-tertiary);
  margin-bottom: .2rem;
  text-transform: uppercase;
  letter-spacing: .05em;
}

.info-card p {
  font-size: .9375rem;
  font-weight: 700;
  color: var(--text-primary);
}

.page-footer-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 2rem;
  margin-top: 2rem;
  border-top: 1px solid var(--border-light);
}

.page-footer-nav a {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  color: var(--primary-500);
  text-decoration: none;
  font-size: .9375rem;
  font-weight: 600;
  transition: color var(--transition-base);
}

[data-theme="dark"] .page-footer-nav a { color: var(--primary-400); }
.page-footer-nav a:hover { color: var(--text-primary); }

.footer {
  margin-top: auto;
  padding: 2.5rem 0 1.5rem;
  border-top: 1px solid var(--border-light);
  background: var(--bg-primary);
  position: relative;
  z-index: 1;
}

.footer::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary-500) 30%, var(--secondary-500) 70%, transparent);
  opacity: .4;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copy {
  color: var(--text-tertiary);
  font-size: .875rem;
}

.footer-links-row {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer-links-row a {
  color: var(--text-tertiary);
  text-decoration: none;
  font-size: .875rem;
  font-weight: 500;
  transition: color var(--transition-base);
}

.footer-links-row a:hover { color: var(--primary-500); }
[data-theme="dark"] .footer-links-row a:hover { color: var(--primary-400); }

.toast-container {
  position: fixed;
  top: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: .75rem;
  pointer-events: none;
}

.toast {
  background: var(--bg-elevated);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: .875rem 1.25rem;
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: center;
  gap: .75rem;
  min-width: 280px;
  pointer-events: auto;
  backdrop-filter: blur(20px);
  animation: toastIn .3s cubic-bezier(.34,1.56,.64,1);
}

.toast.toast-out { animation: toastOut .3s ease-out forwards; }

.toast-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--success-500);
  color: #fff;
}

.toast-msg {
  flex: 1;
  font-size: .9375rem;
  font-weight: 600;
  color: var(--text-primary);
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(-16px) scale(.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes toastOut {
  to { opacity: 0; transform: translateY(-16px) scale(.96); }
}

@media (max-width: 768px) {
  h1 { font-size: 1.625rem; }
  .desc { font-size: 1rem; }
  .info-grid { grid-template-columns: 1fr 1fr; }
  .page-footer-nav { flex-direction: column; text-align: center; }
  .footer-inner { flex-direction: column; text-align: center; }
  .copy-btn { font-size: 1rem; padding: .9rem 1.5rem; }
  .back-btn span { display: none; }
  .back-btn { padding: .5rem .875rem; }
}

@media (max-width: 560px) {
  .container { padding: 0 1rem; }
  main { padding: 1.5rem 0; }
  .info-grid { grid-template-columns: 1fr; }
  .hero-img-wrap { aspect-ratio: 4/3; }
  .copy-btn { font-size: .9375rem; padding: .875rem 1.25rem; }
}