/* ===== CSS Variables — Light (default) ===== */
:root {
  --bg-primary: #e8eaf2;
  --bg-secondary: #dfe1ec;
  --bg-card: #f3f4f8;
  --bg-card-hover: #eaebf2;
  --accent: #0099cc;
  --accent-glow: rgba(0, 153, 204, 0.12);
  --secondary: #7c5cbf;
  --secondary-glow: rgba(124, 92, 191, 0.12);
  --text: #1a1a2e;
  --text-muted: #5a5a7a;
  --border: rgba(0, 0, 0, 0.08);
  --radius: 12px;
  --radius-lg: 20px;
  --header-h: 70px;
  --transition: 0.3s ease;
  --font: 'Inter', sans-serif;
  --font-logo: 'Orbitron', sans-serif;
}

/* ===== Dark Theme ===== */
[data-theme="dark"] {
  --bg-primary: #05050a;
  --bg-secondary: #0a0a14;
  --bg-card: #0d0d1a;
  --bg-card-hover: #12122a;
  --accent: #00e0ff;
  --accent-glow: rgba(0, 224, 255, 0.15);
  --secondary: #a78bfa;
  --secondary-glow: rgba(167, 139, 250, 0.15);
  --text: #f8f9ff;
  --text-muted: #a0a0c0;
  --border: rgba(255, 255, 255, 0.06);
}

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

html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, textarea, select { font-family: inherit; }

/* ===== Utility ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.section { padding: 100px 0; }

.section-title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 400;
  margin-bottom: 60px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-h);
  z-index: 1000;
  background: rgba(232, 234, 242, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  font-family: var(--font-logo);
  font-size: 1.5rem;
  font-weight: 400;
  letter-spacing: 2px;
  color: var(--text);
}

.logo .x {
  font-weight: 900;
  background: linear-gradient(135deg, var(--accent), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Nav */
.nav-list {
  display: flex;
  gap: 8px;
  align-items: center;
}

.nav-link {
  padding: 8px 18px;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-muted);
  border-radius: 8px;
  transition: color var(--transition), background var(--transition);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent);
  background: var(--accent-glow);
}

/* Dropdown */
.nav-item.has-dropdown { position: relative; }

.dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px;
  min-width: 220px;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(8px);
  transition: all var(--transition);
}

.nav-item.has-dropdown:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown-link {
  display: block;
  padding: 10px 16px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: 8px;
  transition: all var(--transition);
}

.dropdown-link:hover {
  color: var(--accent);
  background: var(--accent-glow);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: var(--header-h);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  pointer-events: none;
}

.hero-logo {
  font-family: var(--font-logo);
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 400;
  letter-spacing: 6px;
  margin-bottom: 16px;
}

.hero-tagline {
  font-size: clamp(0.85rem, 2vw, 1.1rem);
  font-weight: 400;
  color: var(--text-muted);
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 40px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  border-radius: 10px;
  transition: all var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #00b8d4);
  color: var(--bg-primary);
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 224, 255, 0.3);
}

.btn-outline {
  border: 1px solid var(--border);
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
  transform: translateY(-2px);
}

/* ===== Cards ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all var(--transition);
}

.card:hover {
  border-color: rgba(0, 224, 255, 0.15);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 20px;
  color: var(--accent);
}

.card-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.card-desc {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--text-muted);
  line-height: 1.7;
}

/* Grid layouts */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

/* ===== Tool Card ===== */
.tool-card { position: relative; overflow: hidden; }

.tool-card .card-badge {
  display: inline-block;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 6px;
  margin-bottom: 16px;
}

.badge-live { background: rgba(0, 224, 255, 0.15); color: var(--accent); }
.badge-soon { background: rgba(167, 139, 250, 0.15); color: var(--secondary); }

.tool-card .btn {
  margin-top: 20px;
  width: 100%;
  justify-content: center;
}

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  text-align: center;
}

.footer-text {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 400;
}

/* ===== Page Header ===== */
.page-header {
  padding: 140px 0 60px;
  text-align: center;
  position: relative;
}

.page-header::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  pointer-events: none;
}

/* ===== Locator Generator Tool ===== */
.tool-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 40px;
}

.tool-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.tool-panel-title {
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.tool-textarea {
  width: 100%;
  min-height: 200px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  color: var(--text);
  font-family: 'Courier New', monospace;
  font-size: 0.8rem;
  resize: vertical;
  transition: border-color var(--transition);
}

.tool-textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.tool-actions {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

/* Locator result */
.locator-result {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
  position: relative;
}

.locator-label {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.locator-value {
  font-family: 'Courier New', monospace;
  font-size: 0.8rem;
  color: var(--accent);
  word-break: break-all;
}

.quality-badge {
  font-size: 0.55rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.quality-excellent { background: rgba(0, 224, 255, 0.15); color: #00e0ff; }
.quality-good { background: rgba(74, 222, 128, 0.15); color: #4ade80; }
.quality-fair { background: rgba(250, 204, 21, 0.15); color: #facc15; }
.quality-poor { background: rgba(248, 113, 113, 0.15); color: #f87171; }

.copy-btn {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--text-muted);
  padding: 4px 10px;
  border-radius: 6px;
  transition: all var(--transition);
  cursor: pointer;
}

.copy-btn:hover { color: var(--accent); background: var(--accent-glow); }

/* ===== About Page ===== */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text p {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 400;
  line-height: 1.8;
  margin-bottom: 20px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}

.stat-number {
  font-size: 2rem;
  font-weight: 900;
}

.stat-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 400;
  margin-top: 4px;
}

/* ===== Contact Page ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.form-group { margin-bottom: 20px; }

.form-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 0.85rem;
  transition: border-color var(--transition);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-textarea { min-height: 140px; resize: vertical; }

.contact-info-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.contact-info-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.contact-info-item:last-child { border-bottom: none; }

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-label {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 500;
}

.contact-value {
  font-size: 0.85rem;
  font-weight: 500;
  margin-top: 2px;
}

/* ===== Theme Switch ===== */
.theme-switch {
  position: relative;
  width: 44px;
  height: 24px;
  cursor: pointer;
  flex-shrink: 0;
}

.theme-switch input { display: none; }

.theme-slider {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--border);
  border-radius: 24px;
  transition: var(--transition);
  border: 1px solid var(--border);
}

.theme-slider::before {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  top: 2px;
  left: 3px;
  transition: var(--transition);
}

.theme-switch input:checked + .theme-slider::before {
  transform: translateX(19px);
}

/* ===== Dark theme overrides ===== */
[data-theme="dark"] .header {
  background: rgba(5, 5, 10, 0.85);
}

[data-theme="dark"] .card:hover {
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .nav {
  background: rgba(5, 5, 10, 0.97);
}

/* ===== Animations ===== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes gradient-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.animated-gradient {
  background: linear-gradient(135deg, var(--accent), var(--secondary), var(--accent));
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-shift 4s ease infinite;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .tool-layout { grid-template-columns: 1fr; }
  .about-content { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .hamburger { display: flex; }

  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    width: 100%;
    background: rgba(232, 234, 242, 0.97);
    backdrop-filter: blur(20px);
    padding: 24px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
  }

  .nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-list { flex-direction: column; gap: 4px; }

  .nav-link {
    display: block;
    padding: 12px 16px;
    width: 100%;
  }

  .nav-item.has-dropdown .dropdown {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    margin-top: 4px;
    margin-left: 16px;
    background: transparent;
    border: none;
    padding: 0;
    min-width: auto;
  }

  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
  .section-title { font-size: 1.5rem; }
  .hero-logo { letter-spacing: 3px; }
}