/* index.css — หน้าแรก */
:root {
  --lavender: #ebe6fa;
  --purple: #6b4fd4;
  --indigo: #4f52e8;
  --indigo-dark: #3a3db8;
  --lime: #c8f542;
  --lime-glow: rgba(200, 245, 66, 0.45);
  --navy: #1a1640;
  --text: #2d2855;
  --text-muted: #6b6590;
  --white: #ffffff;
  --shadow: 0 20px 60px rgba(74, 47, 168, 0.12);
  --radius: 20px;
  --radius-lg: 28px;
  --font-display: 'Mitr', sans-serif;
  --font-body: 'Sarabun', sans-serif;
  --header-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }
body { font-family: var(--font-body); font-size: 17px; line-height: 1.65; color: var(--text); background: var(--lavender); overflow-x: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
.container { width: min(1120px, 92vw); margin-inline: auto; }

.sparkle-field {
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% 10%, rgba(200,245,66,0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 85% 30%, rgba(107,79,212,0.06) 0%, transparent 55%);
}
.sparkle-field::before {
  content: ''; position: absolute; inset: 0; opacity: 0.5;
  background-image:
    radial-gradient(circle 2px at 12% 18%, var(--lime) 0%, transparent 100%),
    radial-gradient(circle 1.5px at 88% 12%, var(--lime) 0%, transparent 100%),
    radial-gradient(circle 2px at 75% 65%, var(--lime) 0%, transparent 100%);
  animation: twinkle 4s ease-in-out infinite alternate;
}
@keyframes twinkle { from { opacity: 0.3; } to { opacity: 0.7; } }

.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100; height: var(--header-h);
  background: rgba(235,230,250,0.85); backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(107,79,212,0.08);
}
.site-header.scrolled { box-shadow: 0 4px 24px rgba(74,47,168,0.1); }
.nav { display: flex; align-items: center; gap: 2rem; height: 100%; }
.nav-brand { display: flex; align-items: center; gap: 0.6rem; font-family: var(--font-display); font-weight: 600; font-size: 1.15rem; color: var(--navy); flex-shrink: 0; }
.nav-brand img { border-radius: 50%; }
.nav-links { display: flex; list-style: none; gap: 1.5rem; margin-left: auto; }
.nav-links a { font-size: 0.92rem; font-weight: 500; color: var(--text-muted); transition: color 0.2s; }
.nav-links a:hover, .nav-links a.active { color: var(--navy); }
.nav-links a.active { font-weight: 600; border-bottom: 2px solid var(--lime); padding-bottom: 2px; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; margin-left: auto; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--navy); border-radius: 2px; transition: transform 0.3s, opacity 0.3s; }

.btn { display: inline-flex; align-items: center; justify-content: center; padding: 0.65rem 1.4rem; border-radius: 999px; font-family: var(--font-display); font-weight: 500; font-size: 0.95rem; border: 2px solid transparent; transition: transform 0.2s, box-shadow 0.2s, background 0.2s; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--indigo); color: var(--white); box-shadow: 0 8px 24px rgba(79,82,232,0.35); }
.btn-primary:hover { background: var(--indigo-dark); }
.btn-outline { background: transparent; color: var(--navy); border-color: rgba(26,22,64,0.2); }
.btn-outline:hover { border-color: var(--purple); background: rgba(107,79,212,0.06); }
.btn-lg { padding: 0.85rem 1.8rem; font-size: 1rem; }

main { position: relative; z-index: 1; }
.section { padding: 5rem 0; }
.section-label { display: inline-block; font-family: var(--font-display); font-size: 0.85rem; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--purple); margin-bottom: 0.75rem; }
.section-head { text-align: center; margin-bottom: 3rem; }
.section-head h2 { font-family: var(--font-display); font-size: clamp(1.8rem, 3.5vw, 2.5rem); font-weight: 600; color: var(--navy); line-height: 1.25; }

/* Hero */
.hero { padding: calc(var(--header-h) + 3rem) 0 5rem; }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }
.hero-badge { display: inline-flex; align-items: center; gap: 0.5rem; background: rgba(255,255,255,0.7); border: 1px solid rgba(107,79,212,0.12); padding: 0.4rem 1rem; border-radius: 999px; font-size: 0.9rem; color: var(--text-muted); margin-bottom: 1.25rem; }
.star-icon { color: var(--lime); text-shadow: 0 0 8px var(--lime-glow); }
.hero h1 { font-family: var(--font-display); line-height: 1.15; margin-bottom: 1.25rem; }
.hero-title-main { display: block; font-size: clamp(2.4rem, 5vw, 3.6rem); font-weight: 700; color: var(--navy); }
.hero-title-sub { display: block; font-size: clamp(1.8rem, 3.5vw, 2.6rem); font-weight: 500; color: var(--purple); position: relative; width: fit-content; }
.hero-title-sub::after { content: ''; position: absolute; bottom: 2px; left: 0; right: 0; height: 8px; background: var(--lime); border-radius: 4px; z-index: -1; transform: skewX(-3deg); }
.hero-desc { font-size: 1.05rem; color: var(--text-muted); max-width: 520px; margin-bottom: 2rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 2.5rem; }
.hero-stats { display: flex; gap: 2rem; list-style: none; padding-top: 1.5rem; border-top: 1px solid rgba(107,79,212,0.12); }
.hero-stats li { display: flex; flex-direction: column; }
.hero-stats strong { font-family: var(--font-display); font-size: 1.4rem; color: var(--indigo); }
.hero-stats span { font-size: 0.85rem; color: var(--text-muted); }
.hero-visual { position: relative; display: flex; justify-content: center; }
.phone-frame { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow), 0 0 0 6px rgba(107,79,212,0.08); transform: rotate(1deg); transition: transform 0.4s; }
.phone-frame:hover { transform: rotate(0deg) scale(1.02); }
.phone-frame img { width: 100%; max-width: 420px; }
.hero-float { position: absolute; font-family: var(--font-display); font-weight: 700; animation: float 3s ease-in-out infinite; }
.hero-float-a { top: 8%; right: 0; font-size: 2rem; color: var(--lime); text-shadow: 0 0 20px var(--lime-glow); }
.hero-float-b { bottom: 12%; left: -4%; font-size: 1.8rem; color: var(--purple); background: var(--white); width: 52px; height: 52px; border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow); animation-delay: 1s; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }

/* Preview cards */
.preview-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.preview-card { display: block; background: var(--white); border-radius: var(--radius); padding: 2rem; box-shadow: var(--shadow); border: 1px solid rgba(107,79,212,0.06); transition: transform 0.3s, box-shadow 0.3s; }
.preview-card:hover { transform: translateY(-6px); box-shadow: 0 28px 60px rgba(74,47,168,0.15); }
.preview-icon { display: inline-block; font-family: var(--font-display); font-size: 0.8rem; font-weight: 600; color: var(--indigo); background: rgba(79,82,232,0.1); padding: 0.25rem 0.75rem; border-radius: 999px; margin-bottom: 1rem; }
.preview-card h3 { font-family: var(--font-display); font-size: 1.2rem; color: var(--navy); margin-bottom: 0.5rem; }
.preview-card p { font-size: 0.95rem; color: var(--text-muted); margin-bottom: 1rem; }
.preview-link { font-family: var(--font-display); font-size: 0.9rem; font-weight: 500; color: var(--indigo); }

/* Disclaimer */
.disclaimer-box { display: flex; gap: 1.25rem; background: rgba(255,255,255,0.8); border: 2px solid rgba(107,79,212,0.15); border-left: 5px solid var(--purple); border-radius: var(--radius); padding: 1.75rem 2rem; }
.disclaimer-icon { flex-shrink: 0; width: 40px; height: 40px; background: var(--purple); color: var(--white); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-family: var(--font-display); font-weight: 700; font-size: 1.2rem; }
.disclaimer-box h3 { font-family: var(--font-display); font-size: 1.1rem; color: var(--navy); margin-bottom: 0.4rem; }
.disclaimer-box p { font-size: 0.95rem; color: var(--text-muted); }

/* Download */
.download-card { text-align: center; background: linear-gradient(145deg, var(--indigo) 0%, #4a2fa8 100%); color: var(--white); border-radius: var(--radius-lg); padding: 3.5rem 2rem; box-shadow: 0 24px 64px rgba(79,82,232,0.35); position: relative; overflow: hidden; }
.download-card::before { content: '✦'; position: absolute; top: 1.5rem; right: 2rem; font-size: 3rem; color: var(--lime); opacity: 0.3; }
.download-logo { margin: 0 auto 1.5rem; border-radius: 50%; box-shadow: 0 8px 24px rgba(0,0,0,0.2); }
.download-card h2 { font-family: var(--font-display); font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 600; margin-bottom: 0.75rem; }
.download-card > p { opacity: 0.85; margin-bottom: 2rem; }
.download-badges { display: flex; justify-content: center; flex-wrap: wrap; gap: 1rem; }
.store-badge { display: inline-flex; align-items: center; gap: 0.75rem; background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.25); padding: 0.75rem 1.5rem; border-radius: 14px; transition: background 0.2s, transform 0.2s; }
.store-badge:hover { background: rgba(255,255,255,0.22); transform: translateY(-2px); }
.store-badge span { display: flex; flex-direction: column; text-align: left; font-family: var(--font-display); font-weight: 600; line-height: 1.2; }
.store-badge small { font-size: 0.7rem; font-weight: 400; opacity: 0.8; }

/* Footer */
.site-footer { position: relative; z-index: 1; padding: 2rem 0; border-top: 1px solid rgba(107,79,212,0.1); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; }
.footer-brand { display: flex; align-items: center; gap: 0.5rem; font-family: var(--font-display); font-weight: 600; color: var(--navy); }
.footer-nav { display: flex; gap: 1.5rem; }
.footer-nav a { font-size: 0.9rem; color: var(--text-muted); }
.footer-nav a:hover { color: var(--indigo); }
.footer-copy { font-size: 0.85rem; color: var(--text-muted); width: 100%; text-align: center; margin-top: 0.5rem; }

/* Reveal */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay { transition-delay: 0.15s; }
.reveal-delay-2 { transition-delay: 0.3s; }
.reveal-delay-3 { transition-delay: 0.45s; }

@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
  .preview-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links { position: fixed; top: var(--header-h); left: 0; right: 0; background: rgba(235,230,250,0.97); backdrop-filter: blur(16px); flex-direction: column; padding: 1.5rem 2rem 2rem; gap: 0; transform: translateY(-110%); opacity: 0; pointer-events: none; transition: transform 0.35s, opacity 0.35s; border-bottom: 1px solid rgba(107,79,212,0.1); }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-links li { border-bottom: 1px solid rgba(107,79,212,0.08); }
  .nav-links a { display: block; padding: 1rem 0; }
  .nav-cta { display: none; }
  .nav.open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav.open .nav-toggle span:nth-child(2) { opacity: 0; }
  .nav.open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .hero-stats { flex-direction: column; gap: 1rem; }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer-nav { flex-wrap: wrap; justify-content: center; }
}