/* ============================================================
   Donghua App Pro — Royal Gold + Dark theme
   Colors mirror the app's lib/constants/pro_theme.dart
   ============================================================ */
:root {
    --gold:        #E8C15B;
    --gold-light:  #F5D67B;
    --gold-deep:   #B8860B;
    --bg-top:      #15120C;
    --bg-mid:      #0D0B07;
    --bg-bottom:   #080604;
    --glass:       rgba(255,255,255,0.05);
    --glass-strong:rgba(255,255,255,0.08);
    --glass-border:rgba(255,255,255,0.12);
    --gold-border: rgba(232,193,91,0.40);
    --text:        #FFF8E7;
    --text-muted:  #9A948A;
    --ink:         #1A1206;
    --radius:      18px;
    --maxw:        1120px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    color: var(--text);
    background:
        radial-gradient(1200px 600px at 80% -10%, rgba(232,193,91,0.10), transparent 60%),
        linear-gradient(180deg, var(--bg-top) 0%, var(--bg-mid) 45%, var(--bg-bottom) 100%);
    background-attachment: fixed;
    min-height: 100vh;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }

h1, h2, h3, .brand-name, .footer-name {
    font-family: 'Cinzel', serif;
    letter-spacing: .3px;
}

a { color: var(--gold-light); text-decoration: none; transition: color .2s; }
a:hover { color: var(--gold); }

.gold-text {
    background: linear-gradient(92deg, var(--gold-deep), var(--gold), var(--gold-light));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* ---------- Header ---------- */
.site-header {
    position: sticky; top: 0; z-index: 50;
    backdrop-filter: blur(14px);
    background: rgba(8,6,4,0.72);
    border-bottom: 1px solid var(--glass-border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo { width: 40px; height: 40px; border-radius: 50%; box-shadow: 0 0 0 1px var(--gold-border), 0 4px 18px rgba(0,0,0,.5); }
.brand-name { font-size: 1.15rem; font-weight: 700; color: var(--text); }
.site-nav { display: flex; align-items: center; gap: 26px; }
.site-nav a { color: var(--text-muted); font-size: .95rem; font-weight: 500; }
.site-nav a:hover, .site-nav a.active { color: var(--gold); }
.nav-cta {
    background: linear-gradient(92deg, var(--gold-deep), var(--gold));
    color: var(--ink) !important; font-weight: 600;
    padding: 9px 18px; border-radius: 999px;
    box-shadow: 0 6px 20px rgba(232,193,91,.25);
}
.nav-cta:hover { filter: brightness(1.07); }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; flex-direction: column; gap: 5px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--gold); border-radius: 2px; }

/* ---------- Hero ---------- */
.hero { padding: 84px 0 64px; }
.hero-inner { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.hero-eyebrow {
    display: inline-block; font-size: .8rem; letter-spacing: 2px; text-transform: uppercase;
    color: var(--gold); border: 1px solid var(--gold-border); border-radius: 999px;
    padding: 6px 14px; margin-bottom: 20px; background: var(--glass);
}
.hero h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); line-height: 1.12; margin-bottom: 18px; }
.hero p.lead { font-size: 1.12rem; color: var(--text-muted); max-width: 540px; margin-bottom: 30px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 14px 26px; border-radius: 999px; font-weight: 600; font-size: 1rem;
    border: 1px solid transparent; cursor: pointer; transition: transform .15s, filter .2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-gold {
    background: linear-gradient(92deg, var(--gold-deep), var(--gold), var(--gold-light));
    color: var(--ink);
    box-shadow: 0 10px 30px rgba(232,193,91,.28);
}
.btn-ghost { background: var(--glass); color: var(--text); border-color: var(--glass-border); }
.btn-ghost:hover { border-color: var(--gold-border); color: var(--gold); }

.hero-art { display: flex; justify-content: center; }
.hero-art img {
    width: 100%; max-width: 380px; border-radius: 50%;
    box-shadow: 0 0 0 1px var(--gold-border), 0 30px 80px rgba(0,0,0,.6), 0 0 60px rgba(232,193,91,.15);
    animation: float 6s ease-in-out infinite;
}
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }

/* ---------- Sections ---------- */
section { padding: 56px 0; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 44px; }
.section-head h2 { font-size: clamp(1.6rem, 3.5vw, 2.3rem); margin-bottom: 12px; }
.section-head p { color: var(--text-muted); }

.grid { display: grid; gap: 22px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

.card {
    background: var(--glass); border: 1px solid var(--glass-border);
    border-radius: var(--radius); padding: 28px 24px; transition: border-color .25s, transform .25s;
}
.card:hover { border-color: var(--gold-border); transform: translateY(-4px); }
.card .icon {
    width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center;
    background: linear-gradient(140deg, rgba(232,193,91,.22), rgba(184,134,11,.10));
    border: 1px solid var(--gold-border); font-size: 26px; margin-bottom: 16px;
}
.card h3 { font-size: 1.15rem; margin-bottom: 8px; color: var(--gold-light); }
.card p { color: var(--text-muted); font-size: .96rem; }

/* ---------- CTA band ---------- */
.cta-band { text-align: center; }
.cta-band .card {
    background: linear-gradient(140deg, rgba(232,193,91,.10), rgba(255,255,255,.03));
    border-color: var(--gold-border); padding: 48px 28px;
}
.cta-band h2 { margin-bottom: 14px; }
.cta-band p { color: var(--text-muted); max-width: 520px; margin: 0 auto 26px; }

/* ---------- Legal / article pages ---------- */
.page-hero { padding: 60px 0 20px; text-align: center; }
.page-hero h1 { font-size: clamp(2rem, 4.5vw, 2.8rem); }
.page-hero .updated { color: var(--text-muted); font-size: .9rem; margin-top: 10px; }
.article {
    max-width: 820px; margin: 0 auto; padding: 20px 22px 70px;
}
.article .card { padding: 36px 34px; }
.article h2 { font-size: 1.4rem; color: var(--gold); margin: 30px 0 12px; }
.article h2:first-child { margin-top: 0; }
.article h3 { font-size: 1.1rem; color: var(--gold-light); margin: 22px 0 8px; }
.article p, .article li { color: var(--text); opacity: .92; margin-bottom: 14px; }
.article ul { padding-left: 22px; margin-bottom: 16px; }
.article li { margin-bottom: 8px; }
.article a { text-decoration: underline; }

/* ---------- Contact ---------- */
.contact-box { max-width: 620px; margin: 0 auto; }
.field { margin-bottom: 18px; }
.field label { display: block; margin-bottom: 6px; color: var(--gold-light); font-size: .92rem; }
.field input, .field textarea {
    width: 100%; padding: 13px 15px; border-radius: 12px;
    background: rgba(0,0,0,.35); border: 1px solid var(--glass-border);
    color: var(--text); font-family: inherit; font-size: 1rem;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--gold-border); }
.notice { padding: 14px 16px; border-radius: 12px; margin-bottom: 20px; border: 1px solid var(--gold-border); background: var(--glass); }
.notice.ok { border-color: rgba(120,200,120,.5); }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--glass-border); margin-top: 40px; background: rgba(8,6,4,0.6); }
.footer-inner { display: flex; justify-content: space-between; gap: 30px; padding: 40px 0 26px; flex-wrap: wrap; }
.footer-brand { display: flex; align-items: center; gap: 14px; }
.footer-logo { width: 48px; height: 48px; border-radius: 50%; box-shadow: 0 0 0 1px var(--gold-border); }
.footer-name { font-weight: 700; }
.footer-tag { color: var(--text-muted); font-size: .9rem; }
.footer-links { display: flex; gap: 22px; flex-wrap: wrap; align-content: center; }
.footer-links a { color: var(--text-muted); font-size: .92rem; }
.footer-links a:hover { color: var(--gold); }
.footer-bottom {
    display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap;
    padding: 18px 22px 34px; color: var(--text-muted); font-size: .86rem;
    border-top: 1px solid var(--glass-border); margin-top: 4px;
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
    .hero-inner { grid-template-columns: 1fr; text-align: center; }
    .hero-cta { justify-content: center; }
    .hero-art { order: -1; }
    .hero-art img { max-width: 260px; }
    .grid-3 { grid-template-columns: 1fr; }
    .nav-toggle { display: flex; }
    .site-nav {
        position: absolute; top: 68px; left: 0; right: 0;
        flex-direction: column; align-items: flex-start; gap: 4px;
        background: rgba(8,6,4,0.97); padding: 14px 22px 22px;
        border-bottom: 1px solid var(--glass-border);
        display: none;
    }
    body.nav-open .site-nav { display: flex; }
    .site-nav a { padding: 8px 0; width: 100%; }
    .nav-cta { margin-top: 8px; }
}