/* ==========================================================================
   aidoing.fun - Design System & Stylesheet
   Theme: Vibrant AI Fun (Cyan #00c2ff -> Violet #8b5cf6 -> Coral #ff5e62)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Outfit:wght@500;600;700;800&display=swap');

:root {
  /* Brand Palette (Derived from Logo) */
  --cyan: #00c2ff;
  --purple: #8b5cf6;
  --purple-dark: #6d28d9;
  --coral: #ff5e62;
  --pink: #ec4899;
  
  /* Gradients */
  --grad-logo: linear-gradient(135deg, #00c2ff 0%, #8b5cf6 50%, #ff5e62 100%);
  --grad-hero: linear-gradient(135deg, #00c2ff 0%, #8b5cf6 100%);
  --grad-accent: linear-gradient(135deg, #8b5cf6 0%, #ff5e62 100%);
  --grad-dark: radial-gradient(circle at 50% 0%, #1e1b4b 0%, #0f172a 70%, #090d16 100%);
  --grad-card-glow: radial-gradient(800px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(139, 92, 246, 0.15), transparent 40%);

  /* Neutrals & Dark Mode */
  --bg-body: #090d16;
  --bg-surface: #0f172a;
  --bg-card: rgba(30, 41, 59, 0.6);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --bg-glass: rgba(15, 23, 42, 0.75);
  --border-glass: rgba(255, 255, 255, 0.1);
  --border-glow: rgba(0, 194, 255, 0.3);

  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;

  /* Text Colors */
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  /* Layout & Spacing */
  --max-width: 1240px;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 10px 30px -5px rgba(139, 92, 246, 0.3);

  /* Transitions */
  --tr-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --tr-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background: var(--bg-body);
  background-image: var(--grad-dark);
  background-attachment: fixed;
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Links & Buttons */
a {
  color: inherit;
  text-decoration: none;
  transition: var(--tr-fast);
}

button {
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  outline: none;
  background: none;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Gradient Text Effect */
.gradient-text {
  background: var(--grad-logo);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-glass);
  padding: 1rem 0;
  transition: var(--tr-smooth);
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: 0 0 15px rgba(0, 194, 255, 0.4);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-muted);
  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(--grad-logo);
  border-radius: 2px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.95rem;
  transition: var(--tr-smooth);
}

.btn-primary {
  background: var(--grad-hero);
  color: #fff;
  box-shadow: 0 4px 20px rgba(0, 194, 255, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(139, 92, 246, 0.5);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  border: 1px solid var(--border-glass);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.mobile-toggle {
  display: none;
  font-size: 1.5rem;
  color: var(--text-main);
  padding: 0.5rem;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  padding: 5rem 0 3rem;
  position: relative;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  background: rgba(139, 92, 246, 0.15);
  border: 1px solid rgba(139, 92, 246, 0.4);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--cyan);
  margin-bottom: 1.5rem;
  animation: float 4s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.hero-desc {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--text-muted);
  max-width: 720px;
  margin: 0 auto 2.5rem;
}

.hero-ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

/* Hero Cards / Grid Preview */
.hero-visual {
  position: relative;
  margin-top: 2rem;
}

.hero-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

/* Glass Card */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: var(--tr-smooth);
  position: relative;
  overflow: hidden;
  text-align: left;
}

.glass-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(0, 194, 255, 0.4);
  transform: translateY(-4px);
  box-shadow: 0 15px 35px -10px rgba(0, 194, 255, 0.2);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--grad-hero);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: 0 4px 15px rgba(0, 194, 255, 0.3);
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.card-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.card-tag {
  display: inline-block;
  margin-top: 1rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--coral);
}

/* ==========================================================================
   Interactive AI Fun Playground Widget
   ========================================================================== */
.playground-section {
  padding: 4rem 0;
}

.widget-box {
  background: linear-gradient(145deg, rgba(30, 41, 59, 0.9), rgba(15, 23, 42, 0.9));
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-glow);
}

.widget-header {
  text-align: center;
  margin-bottom: 2rem;
}

.widget-header h3 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
}

.generator-controls {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.generator-input {
  flex: 1;
  min-width: 260px;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-full);
  padding: 0.85rem 1.5rem;
  color: var(--text-main);
  font-size: 1rem;
  outline: none;
  transition: var(--tr-fast);
}

.generator-input:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 15px rgba(0, 194, 255, 0.3);
}

.result-box {
  background: rgba(9, 13, 22, 0.8);
  border: 1px dashed rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 1.1rem;
  color: var(--cyan);
  transition: var(--tr-smooth);
}

/* ==========================================================================
   Pricing Section
   ========================================================================== */
.pricing-section {
  padding: 4rem 0;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 800;
  text-align: center;
  margin-bottom: 1rem;
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 3rem;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.pricing-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.pricing-card.popular {
  border-color: var(--cyan);
  box-shadow: 0 0 30px rgba(0, 194, 255, 0.25);
}

.badge-popular {
  position: absolute;
  top: -12px;
  right: 24px;
  background: var(--grad-hero);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.25rem 0.85rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.price-val {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  margin: 1rem 0;
}

.price-val span {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 400;
}

.feature-list {
  list-style: none;
  margin: 1.5rem 0 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.feature-list li.active {
  color: var(--text-main);
}

.feature-list svg {
  width: 18px;
  height: 18px;
  color: var(--cyan);
  flex-shrink: 0;
}

/* ==========================================================================
   Docs & About Layouts
   ========================================================================== */
.content-box {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 3rem;
  margin-bottom: 3rem;
}

.prose h1, .prose h2, .prose h3 {
  font-family: var(--font-heading);
  color: var(--text-main);
  margin-top: 1.8rem;
  margin-bottom: 0.8rem;
}

.prose h1 { font-size: 2.2rem; }
.prose h2 { font-size: 1.6rem; border-bottom: 1px solid var(--border-glass); padding-bottom: 0.5rem; }
.prose h3 { font-size: 1.25rem; }

.prose p {
  color: var(--text-muted);
  margin-bottom: 1.2rem;
  line-height: 1.7;
}

.prose ul, .prose ol {
  margin: 1rem 0 1.5rem 1.5rem;
  color: var(--text-muted);
}

.prose li {
  margin-bottom: 0.5rem;
}

.code-block {
  background: #040711;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  font-family: monospace;
  color: var(--cyan);
  overflow-x: auto;
  margin: 1.5rem 0;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  margin-top: auto;
  background: #040711;
  border-top: 1px solid var(--border-glass);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: var(--text-muted);
  margin-top: 1rem;
  font-size: 0.95rem;
  max-width: 320px;
}

.footer-heading {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  color: var(--text-main);
}

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

.footer-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: var(--cyan);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.legal-badge-links {
  display: flex;
  gap: 1.5rem;
}

.legal-badge-links a {
  color: var(--text-muted);
  font-weight: 500;
}

.legal-badge-links a:hover {
  color: var(--coral);
}

/* ==========================================================================
   Responsive Styles
   ========================================================================== */
@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-glass);
    flex-direction: column;
    padding: 2rem 1.5rem;
    gap: 1.5rem;
    transform: translateY(-150%);
    opacity: 0;
    pointer-events: none;
    transition: var(--tr-smooth);
  }

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

  .mobile-toggle {
    display: block;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .content-box {
    padding: 1.75rem;
  }
}