/* ===== DESIGN TOKENS ===== */
:root {
  --bg-primary: #050508;
  --bg-secondary: #0a0a12;
  --bg-card: #0f0f1a;
  --bg-hover: #16162a;
  --bg-input: #0c0c18;
  --purple-primary: #7c3aed;
  --purple-bright: #8b5cf6;
  --purple-glow: #a78bfa;
  --purple-light: #c4b5fd;
  --purple-dark: #4c1d95;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border: rgba(124, 58, 237, 0.12);
  --border-hover: rgba(124, 58, 237, 0.3);
  --green: #4ade80;
  --blue: #60a5fa;
  --yellow: #fbbf24;
  --pink: #f472b6;
  --red: #ef4444;
  --success: #22c55e;
  --error: #ef4444;
}

/* ===== RESET ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body.scroll-locked { overflow: hidden; }

/* ===== BG GRID ===== */
.bg-grid {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: -1;
  background-image:
    linear-gradient(rgba(124, 58, 237, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124, 58, 237, 0.02) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  pointer-events: none;
  will-change: auto;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--purple-dark); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--purple-primary); }

/* ===== NAV ===== */
nav {
  position: fixed; top: 0; width: 100%; padding: 1.25rem 2.5rem;
  background: rgba(5, 5, 8, 0.85);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  display: flex; justify-content: space-between; align-items: center;
  transition: padding 0.3s ease, background 0.3s ease;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  will-change: padding, background;
}
nav.scrolled {
  background: rgba(5, 5, 8, 0.97);
  padding: 0.875rem 2.5rem;
}
.logo {
  display: flex; align-items: center; gap: 0.75rem;
  text-decoration: none; color: var(--text-primary);
  font-weight: 800; font-size: 1.25rem; letter-spacing: -0.02em;
}
.logo-icon {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--purple-primary), var(--purple-bright));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  font-weight: 900; font-size: 1.1rem;
  color: white; font-family: 'Inter', sans-serif;
  will-change: transform;
}
.logo:hover .logo-icon { transform: rotate(-10deg) scale(1.05); }

.nav-links { display: flex; gap: 2rem; list-style: none; align-items: center; }
.nav-links a {
  color: var(--text-secondary); text-decoration: none;
  font-weight: 500; font-size: 0.9rem;
  transition: color 0.25s ease; position: relative;
  display: flex; align-items: center; gap: 0.4rem;
}
.nav-links a:hover { color: var(--purple-glow); }
.nav-links a::after {
  content: ''; position: absolute; bottom: -6px; left: 0;
  width: 0; height: 2px;
  background: linear-gradient(90deg, var(--purple-primary), var(--purple-bright));
  transition: width 0.25s ease; border-radius: 2px;
  will-change: width;
}
.nav-links a:hover::after { width: 100%; }

/* ===== MOBILE MENU BTN ===== */
.mobile-menu-btn {
  display: none;
  background: none; border: none;
  color: var(--text-primary);
  cursor: pointer; padding: 0.5rem;
  border-radius: 8px;
  transition: background 0.25s ease;
  z-index: 1002;
  position: relative;
  width: 40px; height: 40px;
  align-items: center; justify-content: center;
}
.mobile-menu-btn:hover { background: rgba(124, 58, 237, 0.1); }
.mobile-menu-btn i {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
  font-size: 1.5rem;
  will-change: transform, opacity;
}
.mobile-menu-btn i.ph-list { opacity: 1; transform: translate(-50%, -50%) rotate(0deg) scale(1); }
.mobile-menu-btn i.ph-x { opacity: 0; transform: translate(-50%, -50%) rotate(-90deg) scale(0.5); }
.mobile-menu-btn.open i.ph-list { opacity: 0; transform: translate(-50%, -50%) rotate(90deg) scale(0.5); }
.mobile-menu-btn.open i.ph-x { opacity: 1; transform: translate(-50%, -50%) rotate(0deg) scale(1); }

/* ===== MOBILE MENU OVERLAY ===== */
.mobile-menu-overlay {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(5, 5, 8, 0.6);
  backdrop-filter: blur(8px);
  z-index: 998; opacity: 0; visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
  will-change: opacity;
  transform: translateZ(0);
  backface-visibility: hidden;
}
.mobile-menu-overlay.active { opacity: 1; visibility: visible; }

/* ===== MOBILE MENU PANEL ===== */
.mobile-menu {
  position: fixed; top: 0; right: 0;
  width: 100%; max-width: 360px; height: 100%;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border);
  z-index: 999; padding: 6rem 2rem 2rem;
  transform: translateX(100%);
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
  overflow-y: auto;
  will-change: transform;
  backface-visibility: hidden;
}
.mobile-menu.active { transform: translateX(0); }

.mobile-menu-header {
  display: flex; align-items: center; gap: 0.75rem;
  margin-bottom: 2.5rem; padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}
.mobile-menu-links { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }
.mobile-menu-links li {
  opacity: 0; transform: translateX(40px);
  transition: all 0.45s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform, opacity;
}
.mobile-menu.active .mobile-menu-links li { opacity: 1; transform: translateX(0); }
.mobile-menu.active .mobile-menu-links li:nth-child(1) { transition-delay: 0.08s; }
.mobile-menu.active .mobile-menu-links li:nth-child(2) { transition-delay: 0.14s; }
.mobile-menu.active .mobile-menu-links li:nth-child(3) { transition-delay: 0.20s; }
.mobile-menu.active .mobile-menu-links li:nth-child(4) { transition-delay: 0.26s; }
.mobile-menu.active .mobile-menu-links li:nth-child(5) { transition-delay: 0.32s; }
.mobile-menu.active .mobile-menu-links li:nth-child(6) { transition-delay: 0.38s; }

.mobile-nav-link {
  display: flex; align-items: center; gap: 0.875rem;
  padding: 1rem 1.25rem; border-radius: 12px;
  color: var(--text-secondary); text-decoration: none; font-weight: 500; font-size: 1rem;
  transition: color 0.25s ease, background 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
  border: 1px solid transparent;
}
.mobile-nav-link:hover, .mobile-nav-link.active-page {
  background: rgba(124, 58, 237, 0.08);
  border-color: var(--border);
  color: var(--purple-glow);
  transform: translateX(6px);
}
.mobile-nav-link i { font-size: 1.25rem; color: var(--purple-glow); }

.mobile-menu-cta {
  margin-top: 2rem; padding-top: 2rem;
  border-top: 1px solid var(--border);
  opacity: 0; transform: translateY(20px);
  transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1) 0.4s;
  will-change: transform, opacity;
}
.mobile-menu.active .mobile-menu-cta { opacity: 1; transform: translateY(0); }

@media (max-width: 768px) {
  .mobile-menu-btn { display: flex; }
  .nav-links { display: none; }
  nav { padding: 1rem 1.25rem; }
  nav.scrolled { padding: 0.75rem 1.25rem; }
}

/* ===== BUTTONS ===== */
.btn {
  padding: 0.75rem 1.5rem; border-radius: 10px;
  font-weight: 600; font-size: 0.9rem;
  text-decoration: none;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s ease;
  cursor: pointer; border: none; font-family: inherit;
  display: inline-flex; align-items: center; gap: 0.5rem;
  will-change: transform;
}
.btn-primary {
  background: linear-gradient(135deg, var(--purple-primary), var(--purple-bright));
  color: white;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(124,58,237,0.3); }
.btn-secondary {
  background: transparent; color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  border-color: var(--border-hover); color: var(--text-primary);
  background: var(--bg-hover); transform: translateY(-2px);
}
.btn-danger {
  background: rgba(239,68,68,0.1); color: var(--red);
  border: 1px solid rgba(239,68,68,0.2);
}
.btn-danger:hover { background: rgba(239,68,68,0.2); border-color: rgba(239,68,68,0.4); transform: translateY(-2px); }
.btn-sm { padding: 0.5rem 1rem; font-size: 0.8rem; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; pointer-events: none; }

/* ===== CARDS ===== */
.card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px;
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.card:hover { border-color: var(--border-hover); }

/* ===== BADGES ===== */
.badge {
  display: inline-flex; align-items: center; gap: 0.35rem;
  padding: 0.25rem 0.75rem; border-radius: 100px;
  font-size: 0.75rem; font-weight: 500; font-family: 'JetBrains Mono', monospace;
}
.badge-purple { background: rgba(124,58,237,0.12); color: var(--purple-light); border: 1px solid rgba(124,58,237,0.2); }
.badge-gray { background: rgba(100,116,139,0.1); color: var(--text-muted); border: 1px solid rgba(100,116,139,0.15); }
.badge-green { background: rgba(74,222,128,0.1); color: var(--green); border: 1px solid rgba(74,222,128,0.2); }

/* ===== INPUTS ===== */
.input, .textarea, .select {
  width: 100%; background: var(--bg-input);
  border: 1px solid var(--border); border-radius: 10px;
  padding: 0.75rem 1rem; color: var(--text-primary);
  font-family: 'Inter', sans-serif; font-size: 0.9rem;
  transition: border-color 0.25s ease, box-shadow 0.25s ease; outline: none;
}
.input:focus, .textarea:focus, .select:focus {
  border-color: var(--purple-bright);
  box-shadow: 0 0 0 3px rgba(139,92,246,0.12);
}
.input::placeholder, .textarea::placeholder { color: var(--text-muted); }
.textarea { resize: vertical; min-height: 180px; font-family: 'JetBrains Mono', monospace; font-size: 0.85rem; }
.select option { background: var(--bg-card); }
.form-label { display: block; font-size: 0.85rem; font-weight: 500; color: var(--text-secondary); margin-bottom: 0.5rem; }
.form-group { margin-bottom: 1.25rem; }

/* ===== CODE WINDOW ===== */
.code-window { background: var(--bg-secondary); border: 1px solid var(--border); border-radius: 14px; overflow: hidden; }
.code-window-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.875rem 1.25rem; background: rgba(124,58,237,0.04);
  border-bottom: 1px solid var(--border);
}
.code-dot { width: 12px; height: 12px; border-radius: 50%; flex-shrink: 0; }
.code-dot.red { background: #ef4444; }
.code-dot.yellow { background: #eab308; }
.code-dot.green { background: #22c55e; }

/* ===== SCROLL REVEAL ===== */
.reveal {
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}
.reveal.active { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }

/* ===== TOAST ===== */
.toast-container {
  position: fixed; bottom: 1.5rem; right: 1.5rem;
  display: flex; flex-direction: column; gap: 0.75rem;
  z-index: 9999; pointer-events: none;
}
.toast {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.875rem 1.25rem;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; font-size: 0.875rem;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  transform: translateX(120%); opacity: 0;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s ease;
  will-change: transform, opacity;
  pointer-events: auto; max-width: 320px;
}
.toast.show { transform: translateX(0); opacity: 1; }
.toast.hide { transform: translateX(120%); opacity: 0; transition-timing-function: cubic-bezier(0.55, 0, 1, 0.45); }
.toast.success { border-color: rgba(74,222,128,0.3); }
.toast.error { border-color: rgba(239,68,68,0.3); }
.toast i { font-size: 1.1rem; }
.toast.success i { color: var(--green); }
.toast.error i { color: var(--red); }

/* ===== SPINNER ===== */
.spinner {
  width: 20px; height: 20px;
  border: 2px solid rgba(139,92,246,0.2);
  border-top-color: var(--purple-bright);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== EMPTY STATE ===== */
.empty-state { text-align: center; padding: 4rem 2rem; color: var(--text-muted); }
.empty-state i { font-size: 3rem; opacity: 0.4; margin-bottom: 1rem; display: block; }
.empty-state p { font-size: 0.95rem; }

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(5,5,8,0.8); backdrop-filter: blur(8px);
  z-index: 2000; display: flex; align-items: center; justify-content: center; padding: 2rem;
  opacity: 0; visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  will-change: opacity;
}
.modal-overlay.show { opacity: 1; visibility: visible; }
.modal {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 20px; padding: 2rem; max-width: 420px; width: 100%;
  transform: scale(0.95) translateY(10px);
  transition: transform 0.3s cubic-bezier(0.16,1,0.3,1);
  will-change: transform;
}
.modal-overlay.show .modal { transform: scale(1) translateY(0); }

/* ===== FOOTER ===== */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem 2.5rem; text-align: center;
  color: var(--text-muted); font-size: 0.85rem; margin-top: auto;
}
footer a { color: var(--purple-glow); text-decoration: none; }
footer a:hover { text-decoration: underline; }

/* ===== PAGE WRAPPER ===== */
.page-wrapper { padding-top: 80px; min-height: 100vh; display: flex; flex-direction: column; }

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

@media (max-width: 640px) {
  .toast-container { bottom: 1rem; right: 1rem; left: 1rem; }
  .toast { max-width: 100%; }
}