/* ============================================================
   FORDTER — css/landing.css
   Styles เฉพาะหน้า Landing Page
   ============================================================ */

/* ── Hero ── */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, #EFF6FF 0%, #F8FAFF 60%, #EEF2FF 100%);
  padding: 80px 0 90px; min-height: 90vh;
  display: flex; align-items: center;
}
.hero-bg {
  position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(ellipse at 70% 50%, rgba(37,99,235,.06) 0%, transparent 70%);
}
.hero-inner {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
}
.hero-tag {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(37,99,235,.08); color: var(--primary);
  padding: 6px 16px; border-radius: 30px; font-weight: 700; font-size: .88rem;
  margin-bottom: 20px; border: 1px solid rgba(37,99,235,.15);
}
.hero-text h1 { font-size: 3rem; font-weight: 900; margin-bottom: 20px; line-height: 1.2; }
.gradient-text {
  background: linear-gradient(135deg, var(--primary), #38BDF8);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-text p { font-size: 1.08rem; color: var(--text-sub); margin-bottom: 32px; max-width: 500px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }
.hero-stats { display: flex; align-items: center; gap: 24px; }
.h-stat { display: flex; flex-direction: column; }
.h-num { font-size: 1.5rem; font-weight: 900; color: var(--primary); }
.h-stat span:last-child { font-size: .82rem; color: var(--text-sub); }
.h-divider { width: 1px; height: 36px; background: var(--border); }
.hero-visual { position: relative; display: flex; justify-content: center; }
.hero-card-float {
  background: #fff; border-radius: 20px; padding: 20px 24px;
  box-shadow: 0 16px 48px rgba(37,99,235,.14);
  display: flex; align-items: center; gap: 16px;
  animation: float 4s ease-in-out infinite;
}
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-10px)} }
.hero-card-chat {
  position: absolute; bottom: -20px; left: 0;
  background: #fff; border-radius: 16px; padding: 14px 18px;
  box-shadow: 0 8px 24px rgba(0,0,0,.1); max-width: 240px;
  animation: float 4s ease-in-out infinite .8s;
}

/* ── Sections ── */
.section-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 36px; gap: 20px; flex-wrap: wrap;
}
.section-head.center { flex-direction: column; text-align: center; }
.section-head h2 { font-size: 1.9rem; font-weight: 900; margin-bottom: 6px; }
.section-head p  { color: var(--text-sub); }

.section-researchers { padding: 90px 0; background: #fff; }
.researchers-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 20px;
}
.researcher-card {
  background: var(--bg); border-radius: var(--radius);
  padding: 28px 20px; text-align: center; cursor: pointer;
  border: 1.5px solid var(--border); transition: all .25s;
}
.researcher-card:hover {
  transform: translateY(-5px); box-shadow: var(--shadow);
  border-color: rgba(37,99,235,.2);
}

.section-how { padding: 90px 0; }
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.step-card {
  background: #fff; border-radius: var(--radius); padding: 36px 28px;
  box-shadow: var(--shadow-sm); position: relative; text-align: center;
  border: 1.5px solid var(--border);
}
.step-num {
  position: absolute; top: -16px; left: 50%; transform: translateX(-50%);
  width: 36px; height: 36px; background: linear-gradient(135deg, var(--primary), #38BDF8);
  color: #fff; border-radius: 50%; font-weight: 900; font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
}
.step-icon {
  width: 60px; height: 60px; background: var(--primary-light);
  border-radius: 18px; display: flex; align-items: center; justify-content: center;
  margin: 16px auto 20px; color: var(--primary);
}
.step-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.step-card p  { color: var(--text-sub); font-size: .9rem; }

.section-trust { padding: 80px 0; background: linear-gradient(135deg, #EFF6FF, #F8FAFF); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.trust-item {
  text-align: center; padding: 28px 20px;
  background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-sm);
}
.trust-item i { color: var(--primary); width: 36px; height: 36px; margin: 0 auto 14px; }
.trust-item h4 { font-size: 1rem; margin-bottom: 6px; }
.trust-item p  { font-size: .87rem; color: var(--text-sub); }

.section-cta { padding: 80px 0; }
.cta-card {
  background: linear-gradient(135deg, var(--primary), #1E40AF);
  border-radius: 28px; padding: 60px; text-align: center; color: #fff;
  box-shadow: 0 20px 60px rgba(37,99,235,.35);
}
.cta-card h2 { font-size: 2.2rem; margin-bottom: 12px; color: #fff; }
.cta-card p  { font-size: 1.05rem; opacity: .85; }

/* ── Footer ── */
.site-footer { background: #0F172A; color: rgba(255,255,255,.7); padding: 60px 0 30px; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .navbar-logo { color: #fff; -webkit-text-fill-color: #fff; }
.footer-brand p { font-size: .9rem; margin-top: 10px; max-width: 220px; }
.footer-links h4 { font-size: .9rem; font-weight: 800; color: #fff; margin-bottom: 16px; letter-spacing: .05em; text-transform: uppercase; }
.footer-links a { display: block; color: rgba(255,255,255,.6); font-size: .88rem; margin-bottom: 8px; transition: color .2s; }
.footer-links a:hover { color: #fff; text-decoration: none; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 24px; font-size: .82rem; text-align: center; }

/* ── Responsive ── */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .trust-grid  { grid-template-columns: repeat(2, 1fr); }
  .steps-grid  { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .hero-text h1 { font-size: 2rem; }
  .trust-grid   { grid-template-columns: 1fr 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
}