/* ============================================================
   FITN — Enterprise AI Agents & Skills
   Design system inspired by modern AI studio sites
   Dark navy + electric violet, glassmorphism, tech feel
   ============================================================ */

/* ---------- Design Tokens ---------- */
:root {
  --primary: #0a0a2a;
  --secondary: #14143a;
  --surface: #1a1a4a;
  --surface-2: #20205a;
  --accent: #6a4fff;
  --accent-light: #8a7dff;
  --accent-soft: rgba(106, 79, 255, 0.14);
  --text: #ffffff;
  --text-secondary: #cfd2f0;
  --text-muted: #9aa0c8;
  --input-bg: #141436;
  --input-border: #2a2a5a;
  --input-text: #ffffff;
  --input-placeholder: #8f95bd;
  --border: rgba(138, 125, 255, 0.22);
  --glow: 0 20px 50px rgba(106, 79, 255, 0.35);
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.28);
  --navbar-bg: rgba(10, 10, 42, 0.78);
  --gradient-text: linear-gradient(120deg, #b8aeff 0%, #9a8fff 35%, #7a6af0 100%);
  --gradient-accent: linear-gradient(120deg, #8a7dff, #6a4fff);
  --font-heading: 'Space Grotesk', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --radius: 18px;
  --radius-sm: 10px;
  --transition: all 0.35s cubic-bezier(0.25, 0.8, 0.35, 1);
}

:root[data-theme='light'] {
  --primary: #ffffff;
  --secondary: #f6f7fd;
  --surface: #ffffff;
  --surface-2: #eef0fc;
  --accent: #5e48e8;
  --accent-light: #7a6af0;
  --accent-soft: rgba(94, 72, 232, 0.10);
  --text: #1d2440;
  --text-secondary: #4a5278;
  --text-muted: #737b9e;
  --input-bg: #ffffff;
  --input-border: #d7dbee;
  --input-text: #1d2440;
  --input-placeholder: #8f95bd;
  --border: rgba(94, 72, 232, 0.18);
  --glow: 0 20px 50px rgba(94, 72, 232, 0.18);
  --shadow: 0 8px 24px rgba(31, 35, 80, 0.10);
  --navbar-bg: rgba(255, 255, 255, 0.82);
}

/* ---------- Reset & Base ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background-color: var(--primary);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.4s ease, color 0.4s ease;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.22;
  font-weight: 700;
}

.container {
  width: min(1180px, 92%);
  margin: 0 auto;
}

section { position: relative; }

::selection { background: var(--accent); color: #fff; }

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--primary); }
::-webkit-scrollbar-thumb { background: linear-gradient(var(--accent), var(--accent-light)); border-radius: 6px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 34px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.98rem;
  letter-spacing: 0.2px;
  position: relative;
  overflow: hidden;
  z-index: 1;
  transition: var(--transition);
  white-space: nowrap;
}

.btn svg { width: 17px; height: 17px; }

.btn-primary {
  background: var(--gradient-accent);
  color: #ffffff;
  box-shadow: 0 8px 22px rgba(106, 79, 255, 0.35);
}
.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, var(--accent-light), var(--accent));
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: -1;
}
.btn-primary:hover::before { opacity: 1; }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 14px 34px rgba(106, 79, 255, 0.45); }

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent-light);
  transform: translateY(-3px);
  box-shadow: 0 10px 26px rgba(106, 79, 255, 0.18);
}

.btn-lg { padding: 18px 42px; font-size: 1.05rem; }

/* ---------- Navbar ---------- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 20px 0;
  background: transparent;
  transition: var(--transition);
}
.navbar.scrolled {
  background: var(--navbar-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 6px 24px rgba(10, 10, 42, 0.18);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.65rem;
  letter-spacing: 0.5px;
}
.brand-mark {
  width: 40px; height: 40px;
  border-radius: 12px;
  background: var(--gradient-accent);
  display: grid;
  place-items: center;
  color: #fff;
  box-shadow: 0 6px 16px rgba(106, 79, 255, 0.4);
  flex-shrink: 0;
}
.brand-mark svg { width: 22px; height: 22px; }
.brand em {
  font-style: normal;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.97rem;
  padding: 9px 16px;
  border-radius: 8px;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 16px; right: 16px; bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }

.nav-menu { display: none; }
.nav-actions { display: flex; align-items: center; gap: 10px; }

.theme-toggle {
  width: 42px; height: 42px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  color: var(--text);
  transition: var(--transition);
}
.theme-toggle:hover { border-color: var(--accent); color: var(--accent-light); transform: rotate(20deg); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-sun { display: none; }
:root[data-theme='light'] .theme-toggle .icon-sun { display: block; }
:root[data-theme='light'] .theme-toggle .icon-moon { display: none; }

.nav-cta { padding: 11px 24px; font-size: 0.9rem; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 42px; height: 42px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 10px;
}
.hamburger span {
  width: 20px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 140px 0 90px;
}

/* animated background layers */
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.hero-bg .orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.5;
  animation: float 12s ease-in-out infinite;
}
.hero-bg .orb-1 { width: 480px; height: 480px; background: rgba(106, 79, 255, 0.55); top: -120px; right: -100px; }
.hero-bg .orb-2 { width: 380px; height: 380px; background: rgba(46, 140, 255, 0.35); bottom: -80px; left: -120px; animation-delay: -4s; }
.hero-bg .orb-3 { width: 220px; height: 220px; background: rgba(138, 125, 255, 0.4); top: 42%; left: 52%; animation-delay: -8s; }
:root[data-theme='light'] .hero-bg .orb { opacity: 0.22; }

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 85% 70% at 50% 35%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 85% 70% at 50% 35%, #000 30%, transparent 75%);
  opacity: 0.5;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-34px) scale(1.06); }
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 50px;
  border: 1px solid var(--border);
  background: var(--accent-soft);
  color: var(--accent-light);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  margin-bottom: 30px;
}
.hero-badge::before {
  content: '';
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent-light);
  box-shadow: 0 0 0 4px var(--accent-soft);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 var(--accent-soft); }
  50% { box-shadow: 0 0 0 8px rgba(106, 79, 255, 0); }
}

.hero h1 {
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  font-weight: 800;
  margin-bottom: 24px;
  letter-spacing: -1px;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 42px;
}

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

.hero-stats {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: center;
  gap: clamp(24px, 6vw, 80px);
  flex-wrap: wrap;
  margin-top: 80px;
}
.hero-stat { text-align: center; }
.hero-stat .num {
  font-family: var(--font-heading);
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  font-weight: 700;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-stat .label {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-top: 4px;
}

/* ---------- Section scaffold ---------- */
.section { padding: 120px 0; }
.section-alt { background: var(--secondary); }

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 70px;
  position: relative;
  z-index: 1;
}
.section-head .eyebrow {
  display: inline-block;
  color: var(--accent-light);
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.section-head h2 {
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  margin-bottom: 18px;
  position: relative;
  display: inline-block;
}
.section-head h2::after {
  content: '';
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  width: 76px;
  height: 4px;
  border-radius: 3px;
  background: var(--gradient-accent);
}
.section-head p {
  color: var(--text-secondary);
  font-size: 1.08rem;
  margin-top: 26px;
}

/* ---------- Cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 28px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 30px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s ease;
}
.card:hover::before { transform: scaleX(1); }
.card:hover {
  transform: translateY(-10px);
  box-shadow: var(--glow);
  border-color: var(--accent-light);
}

.card-icon {
  width: 58px; height: 58px;
  border-radius: 15px;
  background: var(--accent-soft);
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  color: var(--accent-light);
  margin-bottom: 22px;
  transition: var(--transition);
}
.card-icon svg { width: 27px; height: 27px; }
.card:hover .card-icon { background: var(--gradient-accent); color: #fff; box-shadow: 0 10px 24px rgba(106, 79, 255, 0.4); }

.card h3 { font-size: 1.32rem; margin-bottom: 12px; }
.card p { color: var(--text-secondary); font-size: 0.98rem; }
.card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 20px;
  color: var(--accent-light);
  font-weight: 600;
  font-size: 0.93rem;
}
.card .card-link svg { width: 15px; height: 15px; transition: transform 0.3s ease; }
.card .card-link:hover svg { transform: translateX(5px); }

/* ---------- Feature list (check items) ---------- */
.feature-list { display: grid; gap: 14px; }
.feature-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  color: var(--text-secondary);
  font-size: 0.98rem;
}
.feature-list li svg {
  width: 20px; height: 20px;
  color: var(--accent-light);
  flex-shrink: 0;
  margin-top: 3px;
}

/* ---------- Split layout ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.split.flip .split-visual { order: 2; }
.split-body h3 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 18px;
}
.split-body .lead { color: var(--text-secondary); font-size: 1.06rem; margin-bottom: 26px; }
.split-body .sub { color: var(--text-muted); font-size: 0.95rem; margin-top: 18px; }

.split-visual { position: relative; }
.split-visual .visual-frame {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 26px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.split-visual .visual-frame::after {
  content: '';
  position: absolute;
  inset: -40%;
  background: radial-gradient(circle at 30% 20%, rgba(138, 125, 255, 0.18), transparent 45%);
  pointer-events: none;
}

/* mini terminal / code visual */
.mini-terminal {
  background: #0d0d2e;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid rgba(138, 125, 255, 0.25);
  font-family: 'JetBrains Mono', Consolas, monospace;
  font-size: 0.84rem;
  line-height: 1.9;
}
:root[data-theme='light'] .mini-terminal { background: #15153a; }
.mini-terminal .term-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.mini-terminal .term-bar i { width: 11px; height: 11px; border-radius: 50%; display: block; }
.mini-terminal .term-bar i:nth-child(1) { background: #ff5f57; }
.mini-terminal .term-bar i:nth-child(2) { background: #febc2e; }
.mini-terminal .term-bar i:nth-child(3) { background: #28c840; }
.mini-terminal .term-body { padding: 18px 20px; color: #c9d4ff; white-space: pre-wrap; }
.mini-terminal .term-body .k { color: #8a7dff; }
.mini-terminal .term-body .s { color: #6ee7b7; }
.mini-terminal .term-body .c { color: #5a6390; }
.mini-terminal .term-body .p { color: #f5a97f; }

/* ---------- Process / timeline ---------- */
.process-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 24px;
  counter-reset: step;
}
.process-step {
  position: relative;
  padding: 30px 26px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}
.process-step:hover { transform: translateY(-8px); box-shadow: var(--glow); }
.process-step .step-num {
  font-family: var(--font-heading);
  font-size: 2.6rem;
  font-weight: 800;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  margin-bottom: 16px;
  display: block;
}
.process-step h4 { margin-bottom: 10px; font-size: 1.14rem; }
.process-step p { color: var(--text-secondary); font-size: 0.94rem; }

/* ---------- CTA banner ---------- */
.cta-banner {
  position: relative;
  overflow: hidden;
  border-radius: 26px;
  background: var(--gradient-accent);
  padding: 70px 50px;
  text-align: center;
  color: #fff;
}
.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.18) 1.5px, transparent 1.5px);
  background-size: 26px 26px;
  opacity: 0.5;
}
.cta-banner h2 { font-size: clamp(1.8rem, 3.6vw, 2.6rem); margin-bottom: 14px; position: relative; z-index: 1; }
.cta-banner p { font-size: 1.1rem; opacity: 0.92; max-width: 620px; margin: 0 auto 34px; position: relative; z-index: 1; }
.cta-banner .btn-white {
  background: #fff;
  color: var(--accent);
  position: relative;
  z-index: 1;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.22);
}
.cta-banner .btn-white:hover { transform: translateY(-3px); box-shadow: 0 16px 34px rgba(0, 0, 0, 0.3); }

/* ---------- Page hero (inner pages) ---------- */
.page-hero {
  padding: 190px 0 100px;
  position: relative;
  overflow: hidden;
  text-align: center;
}
.page-hero .hero-grid { opacity: 0.35; }
.page-hero h1 {
  font-size: clamp(2.3rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.5px;
  position: relative;
  z-index: 2;
}
.page-hero p {
  position: relative;
  z-index: 2;
  color: var(--text-secondary);
  font-size: 1.12rem;
  max-width: 640px;
  margin: 20px auto 0;
}
.page-hero .breadcrumb {
  position: relative;
  z-index: 2;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 20px;
}
.page-hero .breadcrumb a:hover { color: var(--accent-light); }
.page-hero .breadcrumb .sep { margin: 0 8px; }

/* ---------- Tabs (services) ---------- */
.tab-bar {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 60px;
}
.tab-btn {
  padding: 14px 30px;
  border-radius: 50px;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.98rem;
  transition: var(--transition);
  background: transparent;
}
.tab-btn:hover { border-color: var(--accent-light); color: var(--text); }
.tab-btn.active {
  background: var(--gradient-accent);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 10px 24px rgba(106, 79, 255, 0.35);
}
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeUp 0.6s ease; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Service deep-dive layout ---------- */
.service-band {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 50px 46px;
  margin-bottom: 30px;
  position: relative;
  overflow: hidden;
}
.service-band::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--gradient-accent);
}
.service-band h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.service-band h3 .badge-tag {
  font-size: 0.78rem;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 50px;
  background: var(--accent-soft);
  color: var(--accent-light);
  border: 1px solid var(--border);
}
.service-band > .lead { color: var(--text-secondary); font-size: 1.05rem; margin-bottom: 30px; max-width: 800px; }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}
.feature-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 18px;
  border-radius: 14px;
  background: var(--primary);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.feature-item:hover { transform: translateY(-4px); border-color: var(--accent-light); box-shadow: var(--shadow); }
.feature-item svg { width: 22px; height: 22px; color: var(--accent-light); flex-shrink: 0; margin-top: 2px; }
.feature-item h5 { font-size: 1rem; margin-bottom: 5px; }
.feature-item p { color: var(--text-muted); font-size: 0.88rem; }

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-top: 26px;
}
.advantage {
  padding: 24px;
  border-radius: 16px;
  border: 1px dashed var(--border);
  background: var(--accent-soft);
}
.advantage h5 { display: flex; align-items: center; gap: 9px; margin-bottom: 8px; color: var(--accent-light); }
.advantage h5 svg { width: 18px; height: 18px; }
.advantage p { color: var(--text-secondary); font-size: 0.92rem; }

.use-case-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.use-case-card:hover { transform: translateY(-8px); box-shadow: var(--glow); border-color: var(--accent-light); }
.use-case-card .use-icon {
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--accent-soft);
  display: grid;
  place-items: center;
  color: var(--accent-light);
  margin-bottom: 6px;
}
.use-case-card .use-icon svg { width: 22px; height: 22px; }
.use-case-card h5 { font-size: 1.05rem; }
.use-case-card p { color: var(--text-muted); font-size: 0.9rem; }
.use-case-card .tag {
  align-self: flex-start;
  font-size: 0.74rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 50px;
  background: var(--accent-soft);
  color: var(--accent-light);
  letter-spacing: 0.4px;
}

/* ---------- Values / About ---------- */
.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}
.value-card {
  text-align: center;
  padding: 40px 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}
.value-card:hover { transform: translateY(-8px); box-shadow: var(--glow); }
.value-card .card-icon { margin: 0 auto 20px; }
.value-card h4 { margin-bottom: 10px; }
.value-card p { color: var(--text-secondary); font-size: 0.95rem; }

.skill-pills { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.skill-pills span {
  padding: 8px 18px;
  border-radius: 50px;
  background: var(--accent-soft);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}
.skill-pills span:hover { border-color: var(--accent-light); color: var(--accent-light); transform: translateY(-2px); }

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 44px;
  align-items: start;
}

.contact-form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 42px 38px;
  box-shadow: var(--shadow);
}
.contact-form-card h3 { margin-bottom: 8px; font-size: 1.5rem; }
.contact-form-card .form-note { color: var(--text-muted); font-size: 0.92rem; margin-bottom: 28px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}
.form-group label .req { color: var(--accent-light); }

.form-control {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  color: var(--input-text);
  border-radius: 10px;
  padding: 13px 16px;
  font-size: 0.97rem;
  font-family: inherit;
  transition: var(--transition);
}
.form-control::placeholder { color: var(--input-placeholder); }
.form-control:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
select.form-control {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 16 16' fill='%238a7dff'%3E%3Cpath d='M7.247 11.14L2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.6rem;
}
textarea.form-control { resize: vertical; min-height: 140px; }

.form-submit {
  width: 100%;
  margin-top: 6px;
}
.form-success {
  display: none;
  text-align: center;
  padding: 40px 20px;
}
.form-success.show { display: block; animation: fadeUp 0.6s ease; }
.form-success .success-icon {
  width: 76px; height: 76px;
  margin: 0 auto 22px;
  border-radius: 50%;
  background: var(--accent-soft);
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  color: var(--accent-light);
}
.form-success .success-icon svg { width: 34px; height: 34px; }
.form-success h4 { font-size: 1.4rem; margin-bottom: 10px; }
.form-success p { color: var(--text-secondary); }

.contact-info { display: flex; flex-direction: column; gap: 18px; }
.info-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: var(--transition);
}
.info-card:hover { transform: translateX(6px); border-color: var(--accent-light); }
.info-card .card-icon { width: 48px; height: 48px; margin-bottom: 0; flex-shrink: 0; }
.info-card .card-icon svg { width: 22px; height: 22px; }
.info-card h5 { font-size: 1rem; margin-bottom: 4px; }
.info-card p { color: var(--text-secondary); font-size: 0.93rem; word-break: break-word; }
.info-card a:hover { color: var(--accent-light); }

/* ---------- FAQ ---------- */
.faq-list { max-width: 820px; margin: 0 auto; display: grid; gap: 14px; }
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.open { border-color: var(--accent-light); box-shadow: var(--shadow); }
.faq-q {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  font-family: var(--font-heading);
  font-size: 1.02rem;
  font-weight: 600;
  text-align: left;
  color: var(--text);
}
.faq-q svg {
  width: 18px; height: 18px;
  color: var(--accent-light);
  flex-shrink: 0;
  transition: transform 0.3s ease;
}
.faq-item.open .faq-q svg { transform: rotate(45deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-a p { padding: 0 24px 22px; color: var(--text-secondary); font-size: 0.95rem; }

/* ---------- Footer ---------- */
.footer {
  background: var(--secondary);
  border-top: 1px solid var(--border);
  padding: 80px 0 30px;
  position: relative;
  overflow: hidden;
}
.footer::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 100%, var(--accent-soft), transparent 70%);
  pointer-events: none;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 44px;
  margin-bottom: 54px;
  position: relative;
  z-index: 1;
}
.footer h5 {
  font-size: 1.05rem;
  margin-bottom: 20px;
}
.footer .brand { margin-bottom: 18px; }
.footer .tagline { color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 24px; max-width: 320px; }
.footer-links { display: grid; gap: 11px; }
.footer-links a { color: var(--text-secondary); font-size: 0.94rem; display: inline-flex; align-items: center; gap: 8px; }
.footer-links a:hover { color: var(--accent-light); transform: translateX(4px); }
.footer-links a svg { width: 14px; height: 14px; color: var(--accent-light); }
.footer-links .contact-row svg { width: 15px; height: 15px; }

.socials { display: flex; gap: 12px; }
.socials a {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  color: var(--text-secondary);
  transition: var(--transition);
}
.socials a svg { width: 17px; height: 17px; }
.socials a:hover {
  background: var(--gradient-accent);
  color: #fff;
  border-color: transparent;
  transform: translateY(-4px);
  box-shadow: 0 10px 20px rgba(106, 79, 255, 0.35);
}

.copyright {
  border-top: 1px solid var(--border);
  padding-top: 26px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  color: var(--text-muted);
  font-size: 0.88rem;
  position: relative;
  z-index: 1;
}

/* ---------- Reveal animations ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 0.75s ease, transform 0.75s cubic-bezier(0.2, 0.7, 0.3, 1);
}
[data-reveal].revealed { opacity: 1; transform: translateY(0); }
[data-reveal="left"] { transform: translateX(-40px); }
[data-reveal="right"] { transform: translateX(40px); }
[data-reveal="zoom"] { transform: scale(0.92); }
[data-reveal].revealed { transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  [data-reveal] { opacity: 1; transform: none; }
}

/* ---------- Back to top ---------- */
.back-to-top {
  position: fixed;
  bottom: 30px; right: 30px;
  width: 50px; height: 50px;
  border-radius: 50%;
  background: var(--gradient-accent);
  color: #fff;
  display: grid;
  place-items: center;
  box-shadow: 0 10px 24px rgba(106, 79, 255, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: var(--transition);
  z-index: 900;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { transform: translateY(-4px); }
.back-to-top svg { width: 20px; height: 20px; }

/* ---------- Responsive ---------- */
@media (max-width: 992px) {
  .nav-links, .nav-actions .nav-cta { display: none; }
  .hamburger { display: flex; }

  .nav-menu {
    display: none;
    position: fixed;
    top: 0; right: -320px;
    width: 300px;
    height: 100vh;
    background: var(--surface);
    border-left: 1px solid var(--border);
    padding: 100px 34px 40px;
    flex-direction: column;
    gap: 8px;
    transition: right 0.4s cubic-bezier(0.2, 0.8, 0.3, 1);
    z-index: 1001;
  }
  .nav-menu.open { right: 0; display: flex; }
  .nav-menu a {
    padding: 13px 18px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--text-secondary);
  }
  .nav-menu a:hover, .nav-menu a.active { background: var(--accent-soft); color: var(--text); }
  .nav-menu .nav-cta { display: inline-flex; margin-top: 18px; justify-content: center; }
  .menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(10, 10, 42, 0.55);
    backdrop-filter: blur(4px);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }
  .menu-overlay.show { opacity: 1; visibility: visible; }

  .split { grid-template-columns: 1fr; gap: 40px; }
  .split.flip .split-visual { order: 0; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero-stats { margin-top: 56px; }
  .section { padding: 90px 0; }
  .cta-banner { padding: 54px 30px; }
  .service-band { padding: 36px 26px; }
}

@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .copyright { flex-direction: column; text-align: center; }
  .hero-cta .btn { width: 100%; }
  .page-hero { padding: 150px 0 70px; }
  .brand-logo { height: 32px; }
  .lang-toggle { padding: 0 10px; font-size: 0.76rem; }
  .lang-toggle svg { display: none; }
}

/* ---------- Brand logo (transparent PNG, theme-aware) ---------- */
.brand-logo {
  height: 40px;
  width: auto;
  display: block;
}
.footer .brand-logo { height: 34px; }
:root[data-theme='light'] .brand-logo { filter: invert(1); }

/* ---------- Language toggle (top-right) ---------- */
.lang-toggle {
  height: 42px;
  padding: 0 14px;
  border-radius: 21px;
  border: 1px solid var(--border);
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--text);
  font-family: var(--font-heading);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.3px;
  background: transparent;
  cursor: pointer;
  transition: var(--transition);
}
.lang-toggle:hover { border-color: var(--accent); color: var(--accent-light); }
.lang-toggle svg { width: 16px; height: 16px; }
:root[lang='zh-CN'] .lang-toggle { font-family: var(--font-body); }