/* ==========================================================================
   MyAiStudio — Minimal, Modern & High-Performance Design System
   Fast Loading, Smooth Responsive Layout, Deep Slate Dark Mode
   ========================================================================== */

:root {
  --bg-primary: #07080e;
  --bg-secondary: #0d0f18;
  --bg-card: rgba(18, 20, 32, 0.7);
  --bg-card-hover: rgba(26, 30, 48, 0.85);
  --bg-input: rgba(255, 255, 255, 0.04);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(168, 85, 247, 0.4);
  --border-focus: #a855f7;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-purple: #9333ea;
  --accent-indigo: #6366f1;
  --accent-cyan: #06b6d4;
  --accent-green: #10b981;
  --accent-amber: #f59e0b;
  --accent-red: #ef4444;

  --grad-primary: linear-gradient(135deg, #9333ea 0%, #6366f1 100%);
  --grad-glow: linear-gradient(135deg, rgba(147, 51, 234, 0.15), rgba(99, 102, 241, 0.05));
  --grad-text: linear-gradient(90deg, #c084fc 0%, #818cf8 50%, #38bdf8 100%);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  --shadow-card: 0 4px 20px -2px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 25px -5px rgba(147, 51, 234, 0.35);

  --font-main: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Background Atmosphere */
.bg-ambient {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background: 
    radial-gradient(circle at 15% 15%, rgba(147, 51, 234, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 85% 85%, rgba(99, 102, 241, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 50% 50%, rgba(6, 182, 212, 0.03) 0%, transparent 60%);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
  position: relative;
  z-index: 1;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.25;
}

.gradient-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 8, 14, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  height: 70px;
  display: flex;
  align-items: center;
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-logo img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  object-fit: cover;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-link {
  font-size: 0.93rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: inherit;
  font-size: 0.93rem;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: var(--grad-primary);
  color: #ffffff;
  box-shadow: 0 4px 14px 0 rgba(147, 51, 234, 0.35);
}

.btn-primary:hover {
  box-shadow: 0 6px 20px rgba(147, 51, 234, 0.5);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-subtle);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  color: var(--text-primary);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.84rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1.05rem;
  border-radius: var(--radius-md);
}

.btn-full {
  width: 100%;
}

.btn-google {
  background: #ffffff;
  color: #1e293b;
  font-weight: 600;
  border: 1px solid #e2e8f0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.btn-google:hover {
  background: #f8fafc;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
}

/* Cards & Surfaces */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all 0.25s ease;
  box-shadow: var(--shadow-card);
}

.card-hover:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  box-shadow: 0 12px 30px -4px rgba(0, 0, 0, 0.6), var(--shadow-glow);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-full);
}

.badge-purple {
  background: rgba(147, 51, 234, 0.15);
  border: 1px solid rgba(147, 51, 234, 0.35);
  color: #c084fc;
}

.badge-green {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: #34d399;
}

.badge-amber {
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.35);
  color: #fbbf24;
}

.badge-cyan {
  background: rgba(6, 182, 212, 0.15);
  border: 1px solid rgba(6, 182, 212, 0.35);
  color: #38bdf8;
}

/* Form Inputs */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
}

.form-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
  transition: all 0.2s ease;
}

.form-control:focus {
  border-color: var(--border-focus);
  background: rgba(255, 255, 255, 0.07);
  box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.2);
}

textarea.form-control {
  min-height: 100px;
  resize: vertical;
}

/* Mobile Navigation Toggle Button */
.mobile-toggle {
  display: none;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 1.3rem;
  width: 40px;
  height: 40px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.mobile-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(168, 85, 247, 0.4);
  color: #c084fc;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Grids */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

/* Footer */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
  padding: 50px 0 30px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  color: var(--text-primary);
  font-size: 1rem;
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a:hover {
  color: #c084fc;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Toast Alerts */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 1000;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.6);
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.toast-success {
  background: #064e3b;
  border: 1px solid #059669;
  color: #a7f3d0;
}

.toast-error {
  background: #7f1d1d;
  border: 1px solid #dc2626;
  color: #fecaca;
}

/* Responsive Breakpoints & Mobile Optimization */
@media (max-width: 992px) {
  .grid-3, .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .site-header {
    height: 64px;
  }

  .brand-logo {
    font-size: 1.1rem;
    gap: 8px;
  }

  .brand-logo img {
    width: 28px;
    height: 28px;
  }

  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* Full Screen Blur Mobile Navigation Drawer */
  .nav-links {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    height: calc(100vh - 64px);
    background: rgba(8, 10, 18, 0.98);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-top: 1px solid var(--border-subtle);
    flex-direction: column;
    padding: 24px 20px;
    gap: 10px;
    z-index: 999;
    overflow-y: auto;
    animation: drawerSlide 0.25s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  }

  @keyframes drawerSlide {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
  }

  .nav-links.open {
    display: flex;
  }

  .nav-link {
    font-size: 1.05rem;
    font-weight: 600;
    padding: 14px 18px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
    display: block;
    width: 100%;
  }

  .nav-link:hover, .nav-link.active {
    background: var(--grad-glow);
    border-color: rgba(147, 51, 234, 0.4);
    color: #c084fc;
  }

  .mobile-toggle {
    display: flex;
  }

  .nav-actions {
    gap: 8px;
  }

  .nav-actions .btn-sm {
    padding: 7px 10px;
    font-size: 0.8rem;
  }

  .nav-actions .btn-sm span {
    display: none; /* Icon-only in mobile navbar for clean spacing */
  }

  .card {
    padding: 20px 16px;
    border-radius: var(--radius-md);
  }

  .btn-lg {
    padding: 12px 20px;
    font-size: 0.95rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 14px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem !important;
  }
  .hero-desc {
    font-size: 0.95rem !important;
  }
  .form-control {
    font-size: 16px; /* Prevents auto-zoom on iOS */
  }
}