/* ============================================================
   appiosvn.xyz — Landing  ·  Apple Light Theme
   (dựa trên tokens của theme.css)
   ============================================================ */

/* ── Navbar ─────────────────────────────────────────────── */
.navbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, box-shadow .3s, background .3s;
}
.navbar.scrolled {
  border-bottom-color: var(--border);
  box-shadow: 0 1px 0 rgba(0,0,0,0.02), 0 8px 30px rgba(0,0,0,0.05);
}
.nav-inner {
  max-width: 1120px; margin: 0 auto; padding: 0 24px; height: 60px;
  display: flex; align-items: center; gap: 20px;
}
.logo, .footer-logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 18px; font-weight: 700; letter-spacing: -0.4px;
  color: var(--text);
}
.logo-box {
  width: 34px; height: 34px; border-radius: 10px;
  background: linear-gradient(135deg, #0a84ff, #0071e3);
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; color: #fff;
  box-shadow: 0 5px 16px rgba(0,113,227,0.32);
  transition: transform .3s;
}
.logo:hover .logo-box { transform: rotate(-6deg) scale(1.06); }
.logo-box.small { width: 28px; height: 28px; font-size: 13px; border-radius: 8px; }
.logo strong, .footer-logo strong { color: var(--text); font-weight: 700; }

.nav-links {
  display: flex; align-items: center; gap: 4px;
  margin-left: 12px;
}
.nav-links a {
  color: var(--text-2); font-size: 14px; font-weight: 500;
  padding: 8px 12px; border-radius: 8px; transition: color .18s, background .18s;
}
.nav-links a:hover { color: var(--text); background: var(--bg-2); }

.nav-actions { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.btn-ghost {
  color: var(--text); font-size: 14px; font-weight: 600;
  padding: 9px 16px; border-radius: var(--radius-pill);
  transition: background .18s;
}
.btn-ghost:hover { background: var(--bg-2); }
.btn-nav-cta {
  background: var(--primary); color: #fff; font-size: 14px; font-weight: 600;
  padding: 9px 20px; border-radius: var(--radius-pill);
  box-shadow: 0 4px 14px rgba(0,113,227,0.28);
  transition: transform .18s, box-shadow .2s, background .2s;
}
.btn-nav-cta:hover { background: var(--primary-hover); transform: translateY(-1px); box-shadow: 0 8px 20px rgba(0,113,227,0.34); }

/* Nav user (đăng nhập) */
.nav-user-wrap {
  position: relative; display: flex; align-items: center; gap: 8px;
  padding: 6px 12px 6px 6px; border-radius: var(--radius-pill);
  background: var(--bg-2); border: 1px solid var(--border);
  cursor: pointer; font-size: 14px; font-weight: 600; color: var(--text);
  transition: border-color .2s;
}
.nav-user-wrap:hover { border-color: var(--border-2); }
.nav-avatar {
  width: 28px; height: 28px; border-radius: 50%;
  background: linear-gradient(135deg, #0a84ff, #0071e3); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700;
}
.nav-user-dropdown {
  position: absolute; top: calc(100% + 10px); right: 0;
  min-width: 190px; background: #fff; border: 1px solid var(--border);
  border-radius: 14px; box-shadow: var(--shadow-lg); padding: 6px;
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: all .2s; z-index: 120;
}
.nav-user-dropdown.open { opacity: 1; visibility: visible; transform: none; }
.nav-user-dropdown a {
  display: flex; align-items: center; gap: 9px;
  padding: 10px 12px; border-radius: 9px;
  font-size: 13.5px; font-weight: 500; color: var(--text-2); transition: background .15s, color .15s;
}
.nav-user-dropdown a:hover { background: var(--bg-2); color: var(--text); }

/* Hamburger */
.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; margin-left: auto; }
.hamburger span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: .25s; }
.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); }

.mobile-menu {
  display: none; flex-direction: column;
  background: rgba(255,255,255,0.97); backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border); padding: 8px 20px 18px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a { padding: 13px 6px; font-size: 15px; font-weight: 500; color: var(--text-2); border-bottom: 1px solid var(--sep); }
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu-divider { height: 1px; background: var(--sep); margin: 6px 0; }
.mobile-menu-cta { color: var(--primary) !important; font-weight: 700 !important; }

/* ── Hero ───────────────────────────────────────────────── */
.hero {
  position: relative; overflow: hidden;
  padding: 96px 24px 88px; text-align: center;
  background:
    radial-gradient(ellipse 70% 55% at 50% -8%, rgba(0,113,227,0.10) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 88% 8%, rgba(175,82,222,0.07) 0%, transparent 60%);
}
.hero-glow { display: none; }
.hero-grid {
  position: absolute; inset: 0; pointer-events: none; z-index: 0;
  background-image:
    linear-gradient(rgba(0,0,0,0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,0.028) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 60% 60% at 50% 30%, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 60% 60% at 50% 30%, #000 0%, transparent 75%);
}
.hero-inner { position: relative; z-index: 1; max-width: 820px; margin: 0 auto; animation: ui-fade-up .7s cubic-bezier(.16,1,.3,1) both; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 16px; border-radius: var(--radius-pill);
  background: #fff; border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  font-size: 13px; font-weight: 600; color: var(--text-2); margin-bottom: 28px;
}
.badge-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgba(52,199,89,0.18); }
.hero-title {
  font-size: clamp(38px, 6.4vw, 72px); font-weight: 800;
  line-height: 1.05; letter-spacing: -2px; color: var(--text); margin-bottom: 22px;
}
.gradient-text {
  background: linear-gradient(120deg, #0071e3 0%, #42a5ff 45%, #af52de 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-sub {
  font-size: clamp(16px, 2vw, 20px); color: var(--text-2);
  line-height: 1.6; max-width: 640px; margin: 0 auto 40px;
}
.hero-btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn-cta-primary {
  display: inline-flex; align-items: center; gap: 9px;
  background: var(--primary); color: #fff; font-size: 16px; font-weight: 600;
  padding: 15px 30px; border-radius: var(--radius-pill);
  box-shadow: var(--shadow-primary);
  transition: transform .18s, box-shadow .2s, background .2s;
}
.btn-cta-primary:hover { background: var(--primary-hover); transform: translateY(-2px); box-shadow: 0 14px 34px rgba(0,113,227,0.36); }
.btn-cta-ghost {
  display: inline-flex; align-items: center; gap: 9px;
  color: var(--text); font-size: 16px; font-weight: 600;
  padding: 15px 26px; border-radius: var(--radius-pill);
  background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow-sm);
  transition: transform .18s, border-color .2s, background .2s;
}
.btn-cta-ghost:hover { border-color: var(--border-2); background: var(--bg-2); transform: translateY(-2px); }

/* ── Sections ───────────────────────────────────────────── */
.section { padding: 88px 0; }
.section-alt { background: var(--bg-2); }
.section-inner { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.section-header { text-align: center; max-width: 640px; margin: 0 auto 56px; }
.section-pill {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 15px; border-radius: var(--radius-pill);
  background: var(--primary-soft); color: var(--primary);
  border: 1px solid rgba(0,113,227,0.18);
  font-size: 12.5px; font-weight: 600; margin-bottom: 18px;
}
.section-title { font-size: clamp(28px, 4vw, 44px); font-weight: 800; letter-spacing: -1px; color: var(--text); margin-bottom: 14px; }
.section-sub { font-size: 17px; color: var(--text-2); line-height: 1.6; }

/* ── Features ───────────────────────────────────────────── */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feature-card {
  position: relative; overflow: hidden;
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px 26px; box-shadow: var(--shadow-sm);
  transition: transform .3s cubic-bezier(.16,1,.3,1), box-shadow .3s, border-color .3s;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--border-2); }
.feature-icon-wrap {
  width: 54px; height: 54px; border-radius: 15px !important;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 20px; color: #fff !important;
  border: none !important;
}
.feature-card:nth-child(1) .feature-icon-wrap { background: linear-gradient(135deg, #0a84ff, #0071e3) !important; box-shadow: 0 8px 20px rgba(0,113,227,0.30); }
.feature-card:nth-child(2) .feature-icon-wrap { background: linear-gradient(135deg, #ffb340, #ff9500) !important; box-shadow: 0 8px 20px rgba(255,149,0,0.28); }
.feature-card:nth-child(3) .feature-icon-wrap { background: linear-gradient(135deg, #30d158, #34c759) !important; box-shadow: 0 8px 20px rgba(52,199,89,0.28); }
.feature-card:nth-child(4) .feature-icon-wrap { background: linear-gradient(135deg, #5e5ce6, #7d7bff) !important; box-shadow: 0 8px 20px rgba(94,92,230,0.28); }
.feature-card:nth-child(5) .feature-icon-wrap { background: linear-gradient(135deg, #ff375f, #ff6482) !important; box-shadow: 0 8px 20px rgba(255,55,95,0.26); }
.feature-card:nth-child(6) .feature-icon-wrap { background: linear-gradient(135deg, #bf5af2, #af52de) !important; box-shadow: 0 8px 20px rgba(175,82,222,0.26); }
.feature-title { font-size: 18px; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.feature-desc { font-size: 14.5px; color: var(--text-2); line-height: 1.6; }
.feature-glow { display: none !important; }

/* ── Steps ──────────────────────────────────────────────── */
.steps-row { display: flex; align-items: stretch; gap: 12px; justify-content: center; flex-wrap: wrap; }
.step-card {
  flex: 1; min-width: 220px; max-width: 320px;
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px 26px; box-shadow: var(--shadow-sm); position: relative;
  transition: transform .3s, box-shadow .3s;
}
.step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.step-num { font-size: 13px; font-weight: 800; color: var(--primary); letter-spacing: 1px; margin-bottom: 16px; }
.step-icon {
  width: 52px; height: 52px; border-radius: 14px;
  background: var(--primary-soft); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 21px; margin-bottom: 18px;
}
.step-title { font-size: 18px; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.step-desc { font-size: 14.5px; color: var(--text-2); line-height: 1.6; }
.step-arrow { display: flex; align-items: center; color: var(--text-3); font-size: 20px; }

/* ── CTA ────────────────────────────────────────────────── */
.section-cta { padding: 40px 24px 96px; position: relative; }
.cta-glow { display: none; }
.cta-inner {
  position: relative; overflow: hidden;
  max-width: 960px; margin: 0 auto; text-align: center;
  padding: 68px 32px; border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #0071e3 0%, #0a84ff 50%, #5e5ce6 100%);
  color: #fff; box-shadow: 0 28px 60px rgba(0,113,227,0.34);
}
.cta-inner::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 82% 8%, rgba(255,255,255,0.22), transparent 45%);
  pointer-events: none;
}
.cta-badge {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 15px; border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.18); border: 1px solid rgba(255,255,255,0.25);
  font-size: 12.5px; font-weight: 600; margin-bottom: 20px; position: relative;
}
.cta-title { font-size: clamp(28px, 4vw, 42px); font-weight: 800; letter-spacing: -1px; margin-bottom: 14px; position: relative; }
.cta-sub { font-size: 17px; color: rgba(255,255,255,0.9); margin-bottom: 34px; position: relative; }
.cta-btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; position: relative; }
.cta-btns .btn-cta-primary { background: #fff !important; color: var(--primary) !important; box-shadow: 0 10px 26px rgba(0,0,0,0.16); }
.cta-btns .btn-cta-primary:hover { background: #f2f2f4 !important; transform: translateY(-2px); }
.cta-btns .btn-cta-ghost { background: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.35); color: #fff; }
.cta-btns .btn-cta-ghost:hover { background: rgba(255,255,255,0.2); }

/* ── Footer ─────────────────────────────────────────────── */
.footer { background: var(--bg-2); border-top: 1px solid var(--border); padding: 52px 0 40px; }
.footer-inner { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.footer-top { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer-links { display: flex; gap: 22px; flex-wrap: wrap; }
.footer-links a { font-size: 14px; color: var(--text-2); transition: color .18s; }
.footer-links a:hover { color: var(--primary); }
.footer-divider { height: 1px; background: var(--border); margin: 28px 0 20px; }
.footer-copy { font-size: 13px; color: var(--text-3); text-align: center; }

/* ── Liên hệ hỗ trợ (footer) ── */
.footer-support { display: flex; align-items: center; justify-content: center; gap: 14px; flex-wrap: wrap; margin-bottom: 8px; }
.fs-label { font-size: 14px; font-weight: 700; color: var(--text-2); display: inline-flex; align-items: center; gap: 8px; }
.fs-label i { color: var(--primary); }
.fs-btns { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.support-btn { display: inline-flex; align-items: center; gap: 8px; padding: 9px 18px; border-radius: var(--radius-pill); background: #fff; border: 1px solid var(--border); font-size: 14px; font-weight: 600; color: var(--text); box-shadow: var(--shadow-sm); transition: transform .18s, box-shadow .2s, border-color .2s; }
.support-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: var(--border-2); }

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 900px) { .features-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 820px) {
  .nav-links, .nav-actions { display: none; }
  .hamburger { display: flex; }
  .step-arrow { display: none; }
}
@media (max-width: 620px) {
  .features-grid { grid-template-columns: 1fr; }
  .hero { padding: 72px 20px 64px; }
  .section { padding: 64px 0; }
  .footer-top { flex-direction: column; align-items: flex-start; }
}