/* ============================================================
   ThunderSale · Production landing
   Variation 1 — "Polished Dark / An toàn"
   Tokens, base, components.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:wght@400;500;600;700;800&family=Geist:wght@300;400;500;600;700;800&family=Geist+Mono:wght@400;500;600&display=swap');

:root {
  /* warm reds / oranges / yellows accent over neutral surface */
  --ts-bg-0: #0A0A0A;
  --ts-bg-1: #141414;
  --ts-bg-2: #1C1C1C;
  --ts-fg-1: #FAFAFA;
  --ts-fg-2: #A3A3A3;
  --ts-fg-3: #737373;
  --ts-border:   rgba(255, 255, 255, 0.08);
  --ts-border-2: rgba(255, 255, 255, 0.14);

  --ts-accent:   #F5A524;  /* amber */
  --ts-accent-2: #E07A1F;  /* burnt orange */
  --ts-accent-3: #EBDCB8;  /* warm beige */
  --ts-red:      #DA251D;

  --font-sans: 'Geist', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Geist Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

[data-theme="light"] {
  --ts-bg-0: #FAFAF7;
  --ts-bg-1: #FFFFFF;
  --ts-bg-2: #F4F1EA;
  --ts-fg-1: #141414;
  --ts-fg-2: #525252;
  --ts-fg-3: #737373;
  --ts-border:   rgba(0, 0, 0, 0.08);
  --ts-border-2: rgba(0, 0, 0, 0.14);
}

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

html, body {
  margin: 0; padding: 0;
  background: var(--ts-bg-0);
  color: var(--ts-fg-1);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  transition: background 250ms var(--ease-out), color 250ms var(--ease-out);
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

.inner { max-width: 1200px; margin: 0 auto; padding: 0 32px; }

/* ---------- Typography ---------- */
.h1 { font-size: clamp(40px, 6vw, 84px); line-height: 0.98; letter-spacing: -0.035em; font-weight: 600; margin: 0; }
.h2 { font-size: clamp(32px, 4vw, 56px); line-height: 1.05; letter-spacing: -0.03em; font-weight: 600; margin: 0; }
.h3 { font-size: 22px; font-weight: 600; letter-spacing: -0.01em; margin: 0; }

.eyebrow {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ts-accent);
  font-weight: 600;
}

.muted { color: var(--ts-fg-2); }

.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

.gradient-text {
  background: linear-gradient(135deg, #EBDCB8 0%, #F5A524 50%, #E07A1F 100%);
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
          color: transparent;
}

.stat-num {
  font-family: var(--font-sans);
  font-size: clamp(56px, 7vw, 96px);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 0.9;
  background: linear-gradient(180deg, var(--ts-fg-1) 0%, var(--ts-fg-1) 40%, var(--ts-accent) 140%);
  -webkit-background-clip: text;
          background-clip: text;
  color: transparent;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 20px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 14px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 200ms var(--ease-out);
  white-space: nowrap;
}
.btn-primary { background: var(--ts-accent); color: #1A1205; }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 0 40px -8px rgba(245, 165, 36, 0.5); }
.btn-ghost { background: transparent; color: var(--ts-fg-1); border-color: var(--ts-border-2); }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.04); }
[data-theme="light"] .btn-ghost:hover { background: rgba(0, 0, 0, 0.04); }

.dot {
  width: 4px; height: 4px;
  border-radius: 999px;
  background: var(--ts-accent);
  display: inline-block;
}

/* ---------- Card ---------- */
.card {
  background: var(--ts-bg-1);
  border: 1px solid var(--ts-border);
  border-radius: 20px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}
[data-theme="light"] .card { box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04); }

/* ---------- Aura orb ---------- */
.orb {
  position: absolute;
  width: 800px; height: 800px;
  border-radius: 50%;
  background: radial-gradient(closest-side,
    rgba(245, 165, 36, 0.35),
    rgba(224, 122, 31, 0.15) 50%,
    transparent 80%);
  filter: blur(60px);
  pointer-events: none;
}
[data-theme="light"] .orb {
  background: radial-gradient(closest-side,
    rgba(245, 165, 36, 0.4),
    rgba(235, 220, 184, 0.3) 50%,
    transparent 80%);
}

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(10, 10, 10, 0.72);
  border-bottom: 1px solid var(--ts-border);
  transition: background 250ms var(--ease-out);
}
[data-theme="light"] .nav { background: rgba(250, 250, 247, 0.82); }
.nav .inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.nav-brand {
  display: flex; align-items: center; gap: 8px;
  font-weight: 700; font-size: 18px; letter-spacing: -0.02em;
}
.nav-brand .bolt { color: var(--ts-accent); }
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a { font-size: 14px; color: var(--ts-fg-2); transition: color 150ms; }
.nav-links a:hover { color: var(--ts-fg-1); }
.nav-actions { display: flex; gap: 10px; align-items: center; }

/* Lang toggle */
.lang-toggle {
  display: inline-flex;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  padding: 3px;
  gap: 2px;
}
[data-theme="light"] .lang-toggle {
  background: rgba(0, 0, 0, 0.04);
  border-color: rgba(0, 0, 0, 0.1);
}
.lang-toggle button {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  border: none;
  font-size: 12px; font-weight: 600; letter-spacing: 0.02em;
  cursor: pointer;
  background: transparent;
  color: var(--ts-fg-2);
  transition: background 200ms, color 200ms;
}
.lang-toggle button.active { background: var(--ts-accent); color: #1A1205; }

/* Theme toggle */
.theme-toggle {
  width: 36px; height: 36px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: inherit;
  cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  transition: background 150ms;
}
[data-theme="light"] .theme-toggle {
  background: rgba(0, 0, 0, 0.04);
  border-color: rgba(0, 0, 0, 0.1);
}
.theme-toggle:hover { background: rgba(255, 255, 255, 0.1); }
[data-theme="light"] .theme-toggle:hover { background: rgba(0, 0, 0, 0.08); }
.theme-toggle .icon-light { display: none; }
[data-theme="light"] .theme-toggle .icon-dark { display: none; }
[data-theme="light"] .theme-toggle .icon-light { display: block; }

/* Mobile menu trigger */
.menu-toggle {
  display: none;
  width: 36px; height: 36px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: inherit;
  cursor: pointer;
  align-items: center; justify-content: center;
}
[data-theme="light"] .menu-toggle {
  background: rgba(0, 0, 0, 0.04);
  border-color: rgba(0, 0, 0, 0.1);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 112px 0 96px;
  overflow: hidden;
}
.hero-inner {
  position: relative;
  text-align: center;
  display: flex; flex-direction: column; align-items: center;
  gap: 28px;
}
.hero .orb { top: -200px; left: 50%; transform: translateX(-50%); }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px;
  border: 1px solid var(--ts-border-2);
  border-radius: 999px;
  font-size: 13px;
  color: var(--ts-fg-2);
}
.hero h1 { max-width: 980px; }
.hero p.sub { max-width: 640px; font-size: 18px; line-height: 1.6; }
.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }

.hero-stats {
  margin-top: 48px;
  width: 100%;
  max-width: 1100px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--ts-border);
  border: 1px solid var(--ts-border);
  border-radius: 20px;
  overflow: hidden;
}
.hero-stat {
  padding: 28px 24px;
  background: var(--ts-bg-1);
  display: flex; flex-direction: column; gap: 8px;
  text-align: left;
}
.hero-stat .v { font-size: 36px; line-height: 1.05; font-weight: 600; }
.hero-stat .l { font-size: 13px; color: var(--ts-fg-2); line-height: 1.45; }

/* ---------- Marquee strip ---------- */
.marquee {
  padding: 32px 0;
  border-top: 1px solid var(--ts-border);
  border-bottom: 1px solid var(--ts-border);
  overflow: hidden;
}
.marquee .inner { display: flex; align-items: center; gap: 40px; }
.marquee-label {
  font-size: 12px; letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ts-fg-2); font-weight: 600;
  flex-shrink: 0;
}
.marquee-track {
  overflow: hidden;
  flex: 1;
  position: relative;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.marquee-inner {
  display: flex; gap: 48px;
  animation: ts-scroll 30s linear infinite;
  width: max-content;
}
.marquee-inner span {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.12em;
  color: var(--ts-fg-2);
  white-space: nowrap;
}
@keyframes ts-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ---------- Stats section ---------- */
.section-stats { padding: 96px 0; }
.section-stats .head {
  display: flex; align-items: flex-end; justify-content: space-between;
  margin-bottom: 56px;
  gap: 24px; flex-wrap: wrap;
}
.section-stats .head h2 { max-width: 520px; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stats-grid .item {
  padding: 32px 28px;
  border-radius: 20px;
  background: var(--ts-bg-1);
  border: 1px solid var(--ts-border);
  display: flex; flex-direction: column; gap: 12px;
}
.stats-grid .l { font-size: 15px; color: var(--ts-fg-2); }

/* ---------- Services ---------- */
.section-services { padding: 96px 0; }
.section-head { max-width: 640px; margin-bottom: 56px; }
.section-head .eyebrow { display: inline-block; margin-bottom: 16px; }
.section-head h2 { margin-bottom: 20px; }
.section-head p { font-size: 18px; }
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.svc-card {
  padding: 32px;
  border-radius: 20px;
  background: var(--ts-bg-1);
  border: 1px solid var(--ts-border);
  transition: all 250ms var(--ease-out);
  height: 100%;
  display: flex; flex-direction: column; gap: 16px;
  position: relative;
  overflow: hidden;
}
.svc-card:hover { border-color: var(--ts-accent); transform: translateY(-2px); }
.svc-card .top { display: flex; align-items: center; justify-content: space-between; }
.svc-card .tag {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ts-accent);
  letter-spacing: 0.05em;
}
.svc-card .ico-wrap {
  width: 40px; height: 40px;
  border-radius: 12px;
  background: rgba(245, 165, 36, 0.12);
  display: flex; align-items: center; justify-content: center;
  color: var(--ts-accent);
}
.svc-card p {
  font-size: 14px; color: var(--ts-fg-2);
  line-height: 1.6; margin: 0; flex: 1;
}
.bullets { display: flex; flex-direction: column; gap: 8px; margin-top: 4px; }
.bullets .bullet {
  display: flex; align-items: center; gap: 10px;
  font-size: 14px;
  color: var(--ts-fg-2);
}

/* ---------- Team ---------- */
.section-team {
  padding: 96px 0;
  border-top: 1px solid var(--ts-border);
}
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.member-card {
  display: flex; flex-direction: column; gap: 16px;
  padding: 24px;
  border-radius: 20px;
  background: var(--ts-bg-1);
  border: 1px solid var(--ts-border);
  transition: border-color 200ms;
}
.member-card:hover { border-color: var(--ts-accent); }
.member-head { display: flex; align-items: center; gap: 14px; }
.avatar {
  width: 56px; height: 56px;
  border-radius: 999px;
  display: inline-flex; align-items: center; justify-content: center;
  color: #1A1205;
  font-weight: 700; font-size: 20px;
  font-family: var(--font-sans);
  flex-shrink: 0;
}
.member-name { font-weight: 600; font-size: 16px; }
.member-role { font-size: 13px; color: var(--ts-accent); }
.member-bio { font-size: 14px; color: var(--ts-fg-2); line-height: 1.6; margin: 0; }
.member-city {
  font-size: 12px;
  color: var(--ts-fg-3);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}
.member-city .dot { margin-right: 6px; }

/* ---------- Cases ---------- */
.section-cases {
  padding: 96px 0;
  border-top: 1px solid var(--ts-border);
}
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.case-card {
  padding: 28px;
  display: flex; flex-direction: column; gap: 20px;
}
.case-cat {
  font-size: 12px;
  color: var(--ts-fg-3);
  font-family: var(--font-mono);
  margin-bottom: 6px;
  letter-spacing: 0.06em;
}
.case-brand { font-weight: 600; font-size: 20px; }
.case-quote {
  font-size: 14px;
  color: var(--ts-fg-1);
  line-height: 1.6;
  margin: 0;
  flex: 1;
}
.case-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 16px 0 0;
  border-top: 1px solid var(--ts-border);
}
.case-metric .v {
  font-size: 24px;
  font-weight: 600;
  color: var(--ts-accent);
  letter-spacing: -0.02em;
}
.case-metric .l { font-size: 12px; color: var(--ts-fg-2); }

/* ---------- Blog ---------- */
.section-blog {
  padding: 96px 0;
  border-top: 1px solid var(--ts-border);
}
.section-blog .head {
  display: flex; align-items: flex-end; justify-content: space-between;
  margin-bottom: 40px;
  gap: 24px; flex-wrap: wrap;
}
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--ts-border);
}
.blog-card {
  padding: 28px 24px;
  border-bottom: 1px solid var(--ts-border);
  border-right: 1px solid var(--ts-border);
  display: flex; flex-direction: column; gap: 14px;
  transition: background 200ms;
}
.blog-card:last-child { border-right: none; }
.blog-card:hover { background: var(--ts-bg-1); }
.blog-meta {
  display: flex; gap: 12px;
  font-size: 12px;
  color: var(--ts-fg-3);
  font-family: var(--font-mono);
}
.blog-meta .cat { color: var(--ts-accent); }
.blog-title { font-weight: 600; font-size: 18px; line-height: 1.35; }
.blog-read { font-size: 13px; color: var(--ts-fg-2); margin-top: auto; }

/* ---------- Pricing ---------- */
.section-pricing {
  padding: 96px 0;
  border-top: 1px solid var(--ts-border);
}
.section-pricing .head {
  display: flex; align-items: flex-end; justify-content: space-between;
  margin-bottom: 48px; gap: 24px; flex-wrap: wrap;
}
.pricing-note {
  font-size: 12px;
  color: var(--ts-fg-3);
  font-family: var(--font-mono);
  max-width: 280px;
  text-align: right;
}
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--ts-border);
  border-radius: 20px;
  overflow: hidden;
  background: var(--ts-bg-1);
}
.price-col {
  padding: 36px 32px;
  border-right: 1px solid var(--ts-border);
  display: flex; flex-direction: column; gap: 20px;
  position: relative;
}
.price-col:last-child { border-right: none; }
.price-col.popular { background: var(--ts-bg-2); }
.popular-badge {
  position: absolute;
  top: 16px; right: 16px;
  font-size: 11px;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ts-accent);
  border: 1px solid var(--ts-accent);
  padding: 4px 8px;
  border-radius: 4px;
}
.price-tag {
  font-size: 13px;
  color: var(--ts-fg-3);
  font-family: var(--font-mono);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.price-amount {
  display: flex; align-items: baseline; gap: 8px;
  margin-bottom: 10px;
}
.price-amount .v {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
}
.price-amount .u { font-size: 13px; color: var(--ts-fg-2); }
.price-desc {
  font-size: 14px;
  margin: 0;
  line-height: 1.5;
  color: var(--ts-fg-2);
}
.price-divider { height: 1px; background: var(--ts-border); }
.price-feats {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-direction: column; gap: 10px; flex: 1;
}
.price-feats li {
  display: flex; gap: 10px;
  font-size: 14px;
  align-items: flex-start;
  line-height: 1.5;
}
.price-feats svg {
  color: var(--ts-accent);
  flex-shrink: 0;
  margin-top: 3px;
}

/* ---------- Contact ---------- */
.section-contact {
  padding: 96px 0;
  border-top: 1px solid var(--ts-border);
  position: relative;
  overflow: hidden;
}
.section-contact .orb { bottom: -400px; right: -200px; opacity: 0.7; }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  position: relative;
}
.contact-info p { font-size: 18px; margin-bottom: 40px; }
.channels { display: flex; flex-direction: column; gap: 12px; }
.channel {
  display: flex; align-items: center; gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--ts-border);
}
.channel .k { font-size: 13px; color: var(--ts-fg-2); min-width: 120px; }
.channel .v { font-size: 15px; font-weight: 500; font-family: var(--font-mono); }
.contact-form {
  display: flex; flex-direction: column; gap: 12px;
  padding: 32px;
  background: var(--ts-bg-1);
  border: 1px solid var(--ts-border);
  border-radius: 20px;
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  background: var(--ts-bg-0);
  border: 1px solid var(--ts-border);
  border-radius: 12px;
  padding: 14px 16px;
  color: var(--ts-fg-1);
  font-family: inherit;
  font-size: 15px;
  outline: none;
  transition: border 200ms;
}
.contact-form input:focus,
.contact-form textarea:focus { border-color: var(--ts-accent); }
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: var(--ts-fg-3); }
.contact-form textarea { resize: vertical; min-height: 120px; }
.contact-form button { justify-content: center; margin-top: 8px; }

/* ---------- Footer ---------- */
.footer {
  padding: 48px 0 32px;
  border-top: 1px solid var(--ts-border);
}
.footer .inner {
  display: flex; justify-content: space-between; align-items: flex-start;
  gap: 32px; flex-wrap: wrap;
}
.footer-brand {
  display: flex; align-items: center; gap: 8px;
  font-weight: 700; font-size: 18px;
  margin-bottom: 12px;
}
.footer-brand .bolt { color: var(--ts-accent); }
.footer-tag { max-width: 320px; }
.footer-tag .t { font-size: 14px; color: var(--ts-fg-2); margin: 0 0 8px; }
.footer-tag .a {
  font-size: 13px;
  color: var(--ts-fg-3);
  margin: 0;
  font-family: var(--font-mono);
}
.footer-copy { font-size: 13px; color: var(--ts-fg-3); }

/* ---------- Mobile menu ---------- */
.mobile-menu {
  display: none;
  position: fixed; inset: 72px 0 0 0;
  z-index: 18;
  background: var(--ts-bg-0);
  padding: 32px;
  flex-direction: column; gap: 16px;
  border-top: 1px solid var(--ts-border);
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 18px; font-weight: 600;
  padding: 12px 0;
  border-bottom: 1px solid var(--ts-border);
  color: var(--ts-fg-1);
}
.mobile-menu .btn { margin-top: 16px; justify-content: center; }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .marquee-inner { animation: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .nav-links { display: none; }
  .menu-toggle { display: inline-flex; }
  .nav-actions .btn-primary { display: none; }

  .hero { padding: 80px 0 64px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }

  .services-grid,
  .team-grid,
  .cases-grid,
  .blog-grid { grid-template-columns: 1fr; }

  .blog-grid { border-top: 1px solid var(--ts-border); }
  .blog-card { border-right: none !important; }

  .pricing-grid { grid-template-columns: 1fr; }
  .price-col { border-right: none; border-bottom: 1px solid var(--ts-border); }
  .price-col:last-child { border-bottom: none; }

  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 640px) {
  .inner { padding: 0 20px; }
  .hero { padding: 64px 0 56px; }
  .section-stats,
  .section-services,
  .section-team,
  .section-cases,
  .section-blog,
  .section-pricing,
  .section-contact { padding: 72px 0; }
  .section-head, .section-stats .head, .section-blog .head, .section-pricing .head { margin-bottom: 32px; }
  .marquee-label { display: none; }
  .pricing-note { text-align: left; }
}