/* ============================================
   SGData IA — style.css
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

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

:root {
  --orange: #FF7F00;
  --orange-dark: #e07000;
  --black: #111111;
  --gray-bg: #f9f9f9;
  --gray-line: #e8e8e8;
  --footer-bg: #f5f5f5;
  --text: #222222;
  --text-muted: #666666;
  --white: #ffffff;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --transition: 0.25s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn-primary {
  background: var(--orange);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--orange-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255,127,0,0.35);
}

.btn-outline {
  background: transparent;
  color: var(--orange);
  border-color: var(--orange);
}
.btn-outline:hover {
  background: var(--orange);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-white {
  background: var(--white);
  color: var(--orange);
  font-weight: 700;
}
.btn-white:hover {
  background: #fff0e0;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

/* ---------- Navbar ---------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--white);
  border-bottom: 2px solid var(--orange);
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.navbar__logo img {
  height: 52px;
  width: auto;
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.navbar__links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
  position: relative;
  transition: color var(--transition);
}
.navbar__links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--orange);
  transition: width var(--transition);
}
.navbar__links a:hover { color: var(--orange); }
.navbar__links a:hover::after { width: 100%; }

.navbar__cta { margin-left: 12px; }

/* Hamburger */
.navbar__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  background: none;
  border: none;
}
.navbar__hamburger span {
  display: block;
  width: 26px;
  height: 2.5px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* Mobile nav open */
.navbar__hamburger.active span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.navbar__hamburger.active span:nth-child(2) { opacity: 0; }
.navbar__hamburger.active span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

.navbar__mobile {
  display: none;
  flex-direction: column;
  gap: 0;
  background: var(--white);
  border-top: 1px solid var(--gray-line);
  padding: 12px 0 20px;
}
.navbar__mobile.open { display: flex; }
.navbar__mobile a {
  padding: 12px 24px;
  font-weight: 500;
  color: var(--text);
  transition: color var(--transition), background var(--transition);
}
.navbar__mobile a:hover { color: var(--orange); background: #fff8f0; }
.navbar__mobile .btn { margin: 12px 24px 0; width: calc(100% - 48px); justify-content: center; }

/* ---------- Footer ---------- */
.footer {
  background: var(--footer-bg);
  border-top: 1px solid var(--gray-line);
  padding: 32px 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer__logo img { height: 40px; width: auto; }

.footer__copy {
  font-size: 0.875rem;
  color: var(--text-muted);
  text-align: center;
}

.footer__links {
  display: flex;
  gap: 28px;
}
.footer__links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer__links a:hover { color: var(--orange); }

/* ---------- Section commons ---------- */
.section { padding: 88px 0; }
.section--gray { background: var(--gray-bg); }
.section--orange { background: var(--orange); }
.section--dark { background: var(--black); }

.section__label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--orange);
  background: rgba(255,127,0,0.1);
  padding: 6px 14px;
  border-radius: 20px;
  margin-bottom: 20px;
}

.section__title {
  font-size: clamp(1.75rem, 3.5vw, 2.6rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  color: var(--text);
}
.section__title--white { color: var(--white); }
.section__title--white .accent { color: var(--black); }

.section__subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 580px;
  line-height: 1.7;
}
.section__subtitle--white { color: rgba(255,255,255,0.85); }

.accent { color: var(--orange); }

/* ---------- Hero ---------- */
.hero {
  padding: 96px 0 80px;
  overflow: hidden;
  position: relative;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 48px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,127,0,0.1);
  color: var(--orange);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 8px 16px;
  border-radius: 20px;
  margin-bottom: 24px;
}

.hero__title {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 22px;
  color: var(--text);
}

.hero__subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 36px;
  max-width: 480px;
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.hero__link {
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color var(--transition);
}
.hero__link:hover { color: var(--orange); }

.hero__visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.hero__deco-logo {
  width: 100%;
  max-width: 320px;
  opacity: 0.12;
  filter: grayscale(1);
  user-select: none;
  pointer-events: none;
}

/* ---------- Metrics strip ---------- */
.metrics {
  background: var(--orange);
  padding: 40px 0;
}

.metrics__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}

.metrics__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 16px 24px;
  border-right: 1px solid rgba(255,255,255,0.25);
}
.metrics__item:last-child { border-right: none; }

.metrics__number {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--white);
  line-height: 1;
  margin-bottom: 4px;
}

.metrics__label {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.85);
  font-weight: 500;
}

/* ---------- Service Cards ---------- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 56px;
}

.card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px 28px;
  box-shadow: var(--shadow);
  border-top: 4px solid var(--orange);
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 36px rgba(0,0,0,0.12);
}

.card__icon {
  width: 56px;
  height: 56px;
  background: rgba(255,127,0,0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--orange);
  font-size: 1.5rem;
}

.card__title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}

.card__text {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ---------- How we work (steps) ---------- */
.steps {
  background: var(--orange);
  padding: 88px 0;
}

.steps__header {
  text-align: center;
  margin-bottom: 60px;
}

.steps__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
}

.steps__grid::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 12%;
  right: 12%;
  height: 2px;
  background: rgba(255,255,255,0.3);
  z-index: 0;
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 1;
}

.step__number {
  width: 56px;
  height: 56px;
  background: var(--white);
  color: var(--orange);
  font-size: 1.3rem;
  font-weight: 900;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
}

.step__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}

.step__text {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.8);
  line-height: 1.6;
}

/* ---------- Why SGData ---------- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin-top: 56px;
}

.why-card {
  background: var(--gray-bg);
  border-radius: var(--radius);
  padding: 32px 28px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
  transition: transform var(--transition), box-shadow var(--transition);
}
.why-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.why-card__bullet {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  background: rgba(255,127,0,0.12);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange);
  font-size: 1rem;
  margin-top: 2px;
}

.why-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text);
}

.why-card__text {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ---------- Agents Explainer ---------- */
.agents-explainer { background: var(--white); }

.agents-explainer__header {
  max-width: 640px;
  margin-bottom: 56px;
}

.agents-explainer__grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 60px;
  align-items: start;
}

.agents-text__body {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 20px;
}

.agents-text__body strong { color: var(--text); font-weight: 700; }

.agents-use-cases { margin-top: 28px; }

.use-case-label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.use-case-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.use-case-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.925rem;
  color: var(--text);
  line-height: 1.5;
}

.use-case-list li i {
  flex-shrink: 0;
  margin-top: 3px;
  font-size: 0.8rem;
}

/* Flow diagram */
.agents-flow {
  background: var(--gray-bg);
  border-radius: var(--radius);
  padding: 32px 28px;
  border: 1px solid var(--gray-line);
}

.flow-title {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 24px;
  text-align: center;
}

.flow-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.flow-step {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--white);
  border-radius: 10px;
  padding: 16px 18px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.flow-step__icon {
  width: 38px;
  height: 38px;
  background: rgba(255,127,0,0.1);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange);
  font-size: 0.95rem;
  flex-shrink: 0;
}

.flow-step__content {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.flow-step__content strong {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text);
}

.flow-step__content span {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.flow-arrow {
  text-align: center;
  color: var(--orange);
  font-size: 0.75rem;
  opacity: 0.5;
  padding: 4px 0;
}

@media (max-width: 900px) {
  .agents-explainer__grid { grid-template-columns: 1fr; gap: 40px; }
  .agents-flow { max-width: 480px; }
}

/* ---------- CTA dark ---------- */
.cta-dark {
  background: var(--black);
  padding: 96px 0;
  text-align: center;
}

.cta-dark__title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 900;
  color: var(--white);
  margin-bottom: 16px;
  line-height: 1.2;
}

.cta-dark__sub {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 40px;
}

/* ---------- Page hero (inner pages) ---------- */
.page-hero {
  background: var(--gray-bg);
  padding: 72px 0 56px;
  text-align: center;
  border-bottom: 1px solid var(--gray-line);
}

.page-hero__title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  color: var(--text);
  margin-bottom: 14px;
}

.page-hero__sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ---------- Service detail cards ---------- */
.service-detail {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 28px;
  background: var(--white);
  border-radius: var(--radius);
  padding: 40px 36px;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--orange);
  margin-bottom: 28px;
  transition: transform var(--transition);
}
.service-detail:hover { transform: translateY(-4px); }

.service-detail__icon {
  width: 64px;
  height: 64px;
  background: rgba(255,127,0,0.1);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange);
  font-size: 1.8rem;
  flex-shrink: 0;
}

.service-detail__title {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 10px;
}

.service-detail__desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

.service-detail__benefits {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.benefit-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,127,0,0.08);
  color: var(--orange);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 20px;
}

/* ---------- Contact section ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 60px;
  align-items: start;
}

.contact-form {
  background: var(--white);
  border-radius: var(--radius);
  padding: 44px 40px;
  box-shadow: var(--shadow);
}

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

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 7px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--gray-line);
  border-radius: 8px;
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  color: var(--text);
  background: var(--white);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(255,127,0,0.12);
}

.form-group textarea { resize: vertical; min-height: 130px; }

.form-submit { width: 100%; justify-content: center; font-size: 1rem; padding: 16px; }

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding-top: 8px;
}

.contact-info__title {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 4px;
}

.contact-info__intro {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 12px;
}

.info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.info-item__icon {
  width: 44px;
  height: 44px;
  background: rgba(255,127,0,0.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.info-item__label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 2px;
}

.info-item__value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
}

/* ---------- CTA section (services page) ---------- */
.cta-section {
  background: var(--orange);
  padding: 72px 0;
  text-align: center;
}

.cta-section__title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 900;
  color: var(--white);
  margin-bottom: 14px;
}

.cta-section__sub {
  font-size: 1rem;
  color: rgba(255,255,255,0.85);
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .steps__grid { grid-template-columns: repeat(2, 1fr); }
  .steps__grid::before { display: none; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .navbar__links, .navbar__cta { display: none; }
  .navbar__hamburger { display: flex; }

  .hero__inner { grid-template-columns: 1fr; }
  .hero__visual { display: none; }
  .hero { padding: 64px 0 56px; }

  .metrics__grid { grid-template-columns: 1fr; }
  .metrics__item { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.2); }
  .metrics__item:last-child { border-bottom: none; }

  .cards-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .steps__grid { grid-template-columns: 1fr; gap: 20px; }

  .footer__inner { flex-direction: column; text-align: center; }
  .footer__links { justify-content: center; }

  .service-detail { grid-template-columns: 1fr; }
  .service-detail__icon { width: 52px; height: 52px; font-size: 1.4rem; }

  .contact-form { padding: 28px 22px; }
  .section { padding: 60px 0; }
  .cta-dark { padding: 60px 0; }
}

@media (max-width: 480px) {
  .hero__actions { flex-direction: column; align-items: flex-start; }
  .hero__actions .btn { width: 100%; justify-content: center; }
  .metrics__number { font-size: 1.8rem; }
}