/* TechAlphaGen — AI-powered Software & Digital Product Studio
   Modern AI / SaaS landing — dark theme, blue/violet/cyan gradients, card-based
*/

:root {
  --bg: #0a0b12;
  --bg-2: #0e1019;
  --bg-card: #14161f;
  --bg-elevated: #1b1e2a;
  --text: #f4f6fb;
  --text-muted: #9aa2b5;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);

  --blue: #3b82f6;
  --violet: #8b5cf6;
  --cyan: #22d3ee;
  --grad: linear-gradient(100deg, #38bdf8 0%, #6366f1 45%, #a855f7 100%);
  --grad-soft: linear-gradient(135deg, rgba(56, 189, 248, 0.15), rgba(168, 85, 247, 0.15));

  --font-th: 'IBM Plex Sans Thai', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Sora', 'IBM Plex Sans Thai', sans-serif;

  --radius: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --header-h: 72px;
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 24px 70px rgba(0, 0, 0, 0.45);
  --glow: 0 0 40px rgba(99, 102, 241, 0.35);
  --maxw: 1180px;
}

/* Per-language font stacks */
html[data-lang="ja"] { --font-th: 'Noto Sans JP', 'IBM Plex Sans Thai', sans-serif; --font-display: 'Sora', 'Noto Sans JP', sans-serif; }
html[data-lang="zh"] { --font-th: 'Noto Sans SC', 'IBM Plex Sans Thai', sans-serif; --font-display: 'Sora', 'Noto Sans SC', sans-serif; }

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-th);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; }

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

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: #fff;
  color: #000;
  padding: 0.6rem 1rem;
  border-radius: 8px;
  z-index: 200;
}
.skip-link:focus { left: 1rem; top: 1rem; }

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  font-family: var(--font-display);
  font-size: 0.98rem;
  font-weight: 600;
  border-radius: var(--radius);
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s, border-color 0.2s, opacity 0.2s;
  white-space: nowrap;
}
.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 34px rgba(99, 102, 241, 0.5); }
.btn-outline {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  border-color: var(--border-strong);
}
.btn-outline:hover { border-color: var(--cyan); color: #fff; background: rgba(34, 211, 238, 0.08); }
.btn-full { width: 100%; }

/* ============ Header ============ */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(10, 11, 18, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s;
}
.header.scrolled { border-bottom-color: var(--border); background: rgba(10, 11, 18, 0.9); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}
.logo { display: block; text-decoration: none; line-height: 0; }
.logo-img-wrap {
  display: inline-block;
  overflow: hidden;
  border-radius: 6px;
  line-height: 0;
  clip-path: inset(5% 5% 5% 5%);
  -webkit-clip-path: inset(5% 5% 5% 5%);
}
.logo-img {
  display: block;
  height: 42px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
  object-position: left center;
}
.header-right { display: flex; align-items: center; gap: 1.25rem; }
.nav { display: flex; align-items: center; }

/* Language switcher */
.lang-switch { position: relative; }
.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.75rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  color: var(--text-muted);
  font-family: var(--font-th);
  font-size: 0.85rem;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.lang-btn:hover { color: #fff; border-color: var(--cyan); }
.lang-btn .caret { font-size: 0.7rem; transition: transform 0.2s; }
.lang-switch.open .lang-btn .caret { transform: rotate(180deg); }
.lang-btn .lang-cur { font-weight: 600; }
.lang-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 150px;
  list-style: none;
  margin: 0;
  padding: 0.4rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.18s, transform 0.18s, visibility 0.18s;
  z-index: 120;
}
.lang-switch.open .lang-menu { opacity: 1; visibility: visible; transform: none; }
.lang-menu li { margin: 0; }
.lang-menu button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.55rem 0.75rem;
  background: none;
  border: none;
  border-radius: 8px;
  color: var(--text-muted);
  font-family: var(--font-th);
  font-size: 0.92rem;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.lang-menu button:hover { background: rgba(255, 255, 255, 0.06); color: #fff; }
.lang-menu button[aria-current="true"] { color: #fff; background: var(--grad-soft); font-weight: 600; }
.nav-list {
  display: flex;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 1.9rem;
}
.nav-list a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s;
}
.nav-list a:hover { color: var(--text); }
.nav-cta {
  padding: 0.55rem 1.15rem;
  border-radius: 999px;
  background: var(--grad);
  color: #fff !important;
  font-weight: 600;
  box-shadow: 0 6px 18px rgba(99, 102, 241, 0.35);
}
.nav-cta:hover { transform: translateY(-1px); }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ Section common ============ */
section { padding: 6rem 0; position: relative; }
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 3.5rem;
}
.section-label {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 0.85rem;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.4vw, 2.4rem);
  font-weight: 700;
  line-height: 1.25;
  margin: 0 0 0.9rem;
  letter-spacing: -0.02em;
}
.section-desc { color: var(--text-muted); margin: 0; font-size: 1.05rem; }
.grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ============ Hero ============ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--header-h) + 3rem);
  padding-bottom: 5rem;
  overflow: hidden;
  background: radial-gradient(1200px 600px at 70% -10%, rgba(99, 102, 241, 0.18), transparent 60%),
              radial-gradient(900px 500px at 10% 20%, rgba(34, 211, 238, 0.12), transparent 55%),
              var(--bg);
}
.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at 50% 40%, #000 40%, transparent 80%);
  -webkit-mask-image: radial-gradient(circle at 50% 40%, #000 40%, transparent 80%);
  pointer-events: none;
}
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.5;
  pointer-events: none;
}
.hero-glow-1 { width: 420px; height: 420px; background: #6366f1; top: -120px; right: -60px; }
.hero-glow-2 { width: 360px; height: 360px; background: #22d3ee; bottom: -120px; left: -80px; opacity: 0.32; }
.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 3.5rem;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 1rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 1.6rem;
  font-weight: 500;
}
.hero-badge .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.7rem);
  font-weight: 800;
  line-height: 1.1;
  margin: 0 0 1.2rem;
  letter-spacing: -0.03em;
}
.hero-desc { font-size: 1.12rem; color: var(--text-muted); max-width: 520px; margin: 0 0 2rem; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 2.6rem; }
.hero-trust {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  list-style: none;
  margin: 0;
  padding: 1.4rem 0 0;
  border-top: 1px solid var(--border);
}
.hero-trust li { display: flex; flex-direction: column; gap: 0.15rem; }
.hero-trust strong { font-size: 0.92rem; font-weight: 600; }
.hero-trust span { font-size: 0.8rem; color: var(--text-muted); }

/* Hero visual: dashboard mockup */
.hero-visual { position: relative; }
.mock-window {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transform: perspective(1400px) rotateY(-9deg) rotateX(3deg);
  transition: transform 0.5s;
}
.hero-visual:hover .mock-window { transform: perspective(1400px) rotateY(-4deg) rotateX(1deg); }
.mock-bar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-2);
}
.mock-bar > span { width: 11px; height: 11px; border-radius: 50%; background: #3a3f50; }
.mock-bar > span:nth-child(1) { background: #ff5f57; }
.mock-bar > span:nth-child(2) { background: #febc2e; }
.mock-bar > span:nth-child(3) { background: #28c840; }
.mock-url {
  margin: 0 0 0 auto;
  font-size: 0.72rem;
  color: var(--text-muted);
  font-family: var(--font-display);
}
.mock-body { display: grid; grid-template-columns: 56px 1fr; min-height: 320px; }
.mock-side {
  border-right: 1px solid var(--border);
  padding: 1rem 0.7rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  background: var(--bg-2);
}
.mock-logo { height: 16px; border-radius: 5px; background: var(--grad); }
.mock-nav { height: 9px; border-radius: 4px; background: rgba(255, 255, 255, 0.08); }
.mock-nav.active { background: rgba(99, 102, 241, 0.55); }
.mock-main { padding: 1.1rem; display: flex; flex-direction: column; gap: 1rem; }
.mock-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.7rem; }
.mock-stat {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.6rem 0.7rem;
}
.mock-stat b { display: block; font-family: var(--font-display); font-size: 0.95rem; }
.mock-stat i { font-style: normal; font-size: 0.62rem; color: var(--text-muted); }
.mock-chart {
  display: flex;
  align-items: flex-end;
  gap: 7px;
  height: 110px;
  padding: 0.8rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
}
.mock-chart span {
  flex: 1;
  border-radius: 4px 4px 0 0;
  background: var(--grad);
  opacity: 0.85;
  animation: bar-rise 1.1s ease both;
  transform-origin: bottom;
}
@keyframes bar-rise { from { transform: scaleY(0); } to { transform: scaleY(1); } }
.mock-rows { display: flex; flex-direction: column; gap: 0.55rem; }
.mock-row { height: 10px; border-radius: 5px; background: rgba(255, 255, 255, 0.07); }
.mock-row.short { width: 60%; }

.float-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 0.9rem;
  background: rgba(20, 22, 31, 0.92);
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
  animation: float 4s ease-in-out infinite;
}
.float-card .fc-icon {
  display: grid;
  place-items: center;
  width: 30px; height: 30px;
  border-radius: 8px;
  background: var(--grad-soft);
  color: var(--cyan);
  font-size: 0.9rem;
}
.float-card b { display: block; font-size: 0.78rem; font-family: var(--font-display); }
.float-card i { font-style: normal; font-size: 0.66rem; color: var(--text-muted); }
.float-ai { top: 8%; left: -36px; }
.float-qr { bottom: 10%; right: -28px; animation-delay: 1.5s; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }

/* Marquee */
.marquee {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.9rem 0;
  border-top: 1px solid var(--border);
  background: rgba(10, 11, 18, 0.6);
  overflow: hidden;
  z-index: 1;
}
.marquee-track {
  display: flex;
  gap: 1.5rem;
  width: max-content;
  animation: marquee 26s linear infinite;
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--text-muted);
}
.marquee-track span { white-space: nowrap; }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ============ About ============ */
.about { background: var(--bg-2); }
.about-inner { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 3.5rem; align-items: center; }
.about-content > p { color: var(--text-muted); margin: 0.5rem 0 1.5rem; }
.about-features { list-style: none; margin: 0; padding: 0; }
.about-features li {
  position: relative;
  padding-left: 1.6rem;
  margin-bottom: 0.7rem;
  color: var(--text);
}
.about-features li::before {
  content: '';
  position: absolute;
  left: 0; top: 0.65em;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--grad);
}
.about-features strong { color: #fff; }
.about-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: border-color 0.25s, transform 0.25s;
}
.stat-card:hover { border-color: var(--border-strong); transform: translateY(-3px); }
.stat-card b {
  display: block;
  font-family: var(--font-display);
  font-size: 1.25rem;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 0.3rem;
}
.stat-card span { font-size: 0.85rem; color: var(--text-muted); }

/* ============ Services ============ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.6rem;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.service-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}
.svc-icon {
  display: grid;
  place-items: center;
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--grad-soft);
  border: 1px solid var(--border);
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--cyan);
  margin-bottom: 1.1rem;
}
.service-card h3 { font-family: var(--font-display); font-size: 1.08rem; font-weight: 600; margin: 0 0 0.5rem; }
.service-card p { color: var(--text-muted); font-size: 0.9rem; margin: 0; line-height: 1.6; }

/* ============ Solutions ============ */
.solutions { background: var(--bg-2); }
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
}
.solution-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.8rem;
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.solution-card:hover { border-color: var(--border-strong); transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.solution-card.feature {
  grid-row: span 2;
  background:
    radial-gradient(500px 200px at 80% -10%, rgba(99, 102, 241, 0.18), transparent 60%),
    var(--bg-card);
  border-color: var(--border-strong);
}
.sol-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: var(--grad-soft);
  color: var(--cyan);
  margin-bottom: 1rem;
}
.solution-card h3 { font-family: var(--font-display); font-size: 1.2rem; font-weight: 600; margin: 0 0 0.6rem; }
.solution-card.feature h3 { font-size: 1.5rem; }
.solution-card p { color: var(--text-muted); font-size: 0.92rem; margin: 0; }
.sol-list { list-style: none; margin: 1.3rem 0 0; padding: 0; display: grid; gap: 0.6rem; }
.sol-list li { position: relative; padding-left: 1.5rem; font-size: 0.92rem; }
.sol-list li::before {
  content: '✓';
  position: absolute; left: 0; top: 0;
  color: var(--cyan);
  font-weight: 700;
}

/* ============ Projects ============ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.4rem;
}
.project-card {
  background: linear-gradient(180deg, var(--bg-card), var(--bg-2));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.8rem;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.project-card:hover { border-color: var(--border-strong); transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.project-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1rem; }
.project-kind {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0.25rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 999px;
}
.project-arrow { color: var(--text-muted); font-size: 1.1rem; transition: transform 0.25s, color 0.25s; }
.project-card:hover .project-arrow { transform: translate(3px, -3px); color: var(--cyan); }
.project-card h3 { font-family: var(--font-display); font-size: 1.2rem; font-weight: 600; margin: 0 0 0.55rem; }
.project-card p { color: var(--text-muted); font-size: 0.92rem; margin: 0 0 1.2rem; }
.project-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.project-tags span {
  font-size: 0.75rem;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

/* ============ Process ============ */
.process { background: var(--bg-2); }
.process-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; }
.process-step {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.8rem;
  transition: border-color 0.25s, transform 0.25s;
}
.process-step:hover { border-color: var(--border-strong); transform: translateY(-3px); }
.step-num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0.85;
}
.process-step h3 { font-family: var(--font-display); font-size: 1.12rem; font-weight: 600; margin: 0.5rem 0 0.45rem; }
.process-step p { color: var(--text-muted); font-size: 0.9rem; margin: 0; }

/* ============ Why ============ */
.why-inner {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 3.5rem;
  align-items: center;
  background:
    radial-gradient(600px 300px at 0% 0%, rgba(34, 211, 238, 0.1), transparent 60%),
    radial-gradient(600px 300px at 100% 100%, rgba(168, 85, 247, 0.12), transparent 60%),
    var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 3rem;
}
.why-head .section-label, .why-head .section-title { text-align: left; }
.why-head .section-desc { margin-bottom: 1.6rem; }
.why-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 1rem; }
.why-list li {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  font-size: 1.02rem;
  padding: 1rem 1.2rem;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.why-list .check {
  flex: none;
  display: grid;
  place-items: center;
  width: 28px; height: 28px;
  border-radius: 8px;
  background: var(--grad);
  color: #fff;
  font-weight: 700;
  font-size: 0.85rem;
}

/* ============ Contact ============ */
.contact-inner {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 3.5rem;
  align-items: start;
}
.contact-content > p { color: var(--text-muted); margin: 0.5rem 0 1.8rem; }
.contact-info { list-style: none; margin: 0 0 1.8rem; padding: 0; display: grid; gap: 1.1rem; }
.contact-info li { display: flex; flex-direction: column; gap: 0.15rem; }
.contact-info strong { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-muted); }
.contact-info a { color: #fff; text-decoration: none; }
.contact-info a:hover { color: var(--cyan); }
.contact-badges { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.contact-badges span {
  font-family: var(--font-display);
  font-size: 0.78rem;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  background: var(--grad-soft);
  border: 1px solid var(--border);
  color: var(--cyan);
}
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { margin-bottom: 1.1rem; }
.form-group label { display: block; font-size: 0.88rem; font-weight: 500; margin-bottom: 0.45rem; }
.req { color: var(--cyan); }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  font-family: var(--font-th);
  font-size: 0.98rem;
  color: var(--text);
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-group select { appearance: none; -webkit-appearance: none; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%239aa2b5' d='M6 8 0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 1rem center; padding-right: 2.4rem;
}
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-muted); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--violet);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}
.form-group input.invalid, .form-group textarea.invalid { border-color: #ef4444; }
.form-group textarea { resize: vertical; min-height: 110px; }
.consent {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0.3rem 0 1.3rem;
  cursor: pointer;
}
.consent input { margin-top: 0.25rem; accent-color: var(--violet); flex: none; width: 16px; height: 16px; }
.consent a { color: var(--cyan); }
.form-status { margin: 0.9rem 0 0; font-size: 0.9rem; text-align: center; min-height: 1.2em; }
.form-status.ok { color: #34d399; }
.form-status.err { color: #f87171; }

/* ============ Footer ============ */
.footer { background: var(--bg-2); border-top: 1px solid var(--border); padding: 4rem 0 2rem; }
.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 2fr;
  gap: 3rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
}
.footer-brand .logo-img-wrap { clip-path: inset(5% 5% 5% 5%); -webkit-clip-path: inset(5% 5% 5% 5%); margin-bottom: 1rem; }
.footer-brand img { height: 40px; width: auto; max-width: 160px; object-fit: contain; }
.footer-tagline-text { color: var(--text-muted); font-size: 0.92rem; max-width: 360px; margin: 0; }
.footer-nav { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.footer-col h4 { font-family: var(--font-display); font-size: 0.92rem; margin: 0 0 1rem; }
.footer-col a { display: block; color: var(--text-muted); text-decoration: none; font-size: 0.9rem; margin-bottom: 0.6rem; transition: color 0.2s; }
.footer-col a:hover { color: var(--text); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.5rem;
}
.footer-copy { color: var(--text-muted); font-size: 0.82rem; margin: 0; }
.back-top { color: var(--text-muted); text-decoration: none; font-size: 0.82rem; }
.back-top:hover { color: var(--text); }

/* ============ Reveal animation ============ */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ============ Responsive ============ */
@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero-visual { max-width: 520px; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .solutions-grid { grid-template-columns: repeat(2, 1fr); }
  .solution-card.feature { grid-row: span 1; grid-column: span 2; }
  .why-inner { grid-template-columns: 1fr; padding: 2.2rem; }
  .footer-inner { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 768px) {
  section { padding: 4.5rem 0; }
  .nav-list {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem 1.5rem 1.5rem;
    background: var(--bg-2);
    border-bottom: 1px solid var(--border);
    gap: 0.4rem;
  }
  .nav.is-open .nav-list { display: flex; }
  .nav-list li { width: 100%; }
  .nav-cta { text-align: center; margin-top: 0.4rem; }
  .nav-toggle { display: flex; }
  .about-inner { grid-template-columns: 1fr; gap: 2rem; }
  .process-grid { grid-template-columns: 1fr 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .contact-inner { grid-template-columns: 1fr; gap: 2rem; }
  .hero-trust { grid-template-columns: 1fr; gap: 0.7rem; }
  .float-ai { left: 0; }
  .float-qr { right: 0; }
}

@media (max-width: 560px) {
  .container { padding: 0 1.15rem; }
  .services-grid, .solutions-grid, .about-stats { grid-template-columns: 1fr; }
  .solution-card.feature { grid-column: span 1; }
  .process-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-nav { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; gap: 0.6rem; text-align: center; }
  .hero-actions .btn { flex: 1; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}