/* ===== AI Care — สไตล์หลัก =====
   สีทั้งหมดอยู่ใน :root — เมื่อได้โลโก้จริงให้แก้ที่นี่ที่เดียว */
:root {
    --c-primary: #0f6e7a;       /* สีน้ำ (ชั่วคราว) */
    --c-primary-dark: #0a4f58;
    --c-accent: #e8a33d;        /* สีเน้น (ชั่วคราว) */
    --c-bg: #f6f8f7;
    --c-surface: #ffffff;
    --c-text: #1d2a2c;
    --c-muted: #5f6f72;
    --c-border: #dde5e4;
    --c-ok: #2e8b57;
    --c-warn: #d9a21b;
    --c-bad: #c8453a;
    --radius: 12px;
    --shadow: 0 1px 3px rgba(0, 0, 0, .06), 0 4px 16px rgba(0, 0, 0, .05);
    --font: 'IBM Plex Sans Thai', system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.7;
    color: var(--c-text);
    background: var(--c-bg);
}
img { max-width: 100%; display: block; }
a { color: var(--c-primary); }
h1, h2, h3 { line-height: 1.3; margin: 0 0 .5em; }
h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
.muted { color: var(--c-muted); }
.container { width: min(1140px, 100% - 32px); margin-inline: auto; }

/* ----- Header ----- */
.site-header {
    position: sticky; top: 0; z-index: 1000;
    background: var(--c-surface);
    border-bottom: 1px solid var(--c-border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.25rem; color: var(--c-text); text-decoration: none; }
.brand-mark {
    display: grid; place-items: center;
    width: 34px; height: 34px; border-radius: 50%;
    background: var(--c-primary); color: #fff; font-style: italic;
}
.brand-logo { width: 48px; height: 48px; object-fit: contain; }
.site-nav { display: flex; gap: 4px; flex-wrap: wrap; }
.site-nav a {
    padding: 6px 12px; border-radius: 999px;
    color: var(--c-text); text-decoration: none; font-size: .95rem;
}
.site-nav a:hover { background: var(--c-bg); }
.site-nav a[aria-current="page"] { background: var(--c-primary); color: #fff; }
.nav-toggle { display: none; }

@media (max-width: 900px) {
    .nav-toggle {
        display: block; padding: 6px 14px; border: 1px solid var(--c-border);
        border-radius: 8px; background: var(--c-surface); font: inherit;
    }
    .site-nav {
        display: none; position: absolute; top: 64px; left: 0; right: 0;
        flex-direction: column; padding: 8px 16px 16px;
        background: var(--c-surface); border-bottom: 1px solid var(--c-border);
    }
    .site-nav.open { display: flex; }
}

/* ----- Sections ----- */
.section { padding: 56px 0; }
.section-alt { background: var(--c-surface); }
.section-head { max-width: 720px; margin-bottom: 28px; }
.eyebrow { font-size: .85rem; font-weight: 600; letter-spacing: .04em; color: var(--c-primary); text-transform: uppercase; margin-bottom: .4em; }

.page-hero {
    padding: 56px 0 40px;
    background: linear-gradient(135deg, var(--c-primary-dark), var(--c-primary));
    color: #fff;
}
.page-hero p { max-width: 720px; opacity: .92; font-size: 1.08rem; }
.page-hero .eyebrow { color: #cfe9ec; }

.hero { padding: 88px 0 72px; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.2rem); max-width: 14ch; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }

/* ----- Components ----- */
.btn {
    display: inline-block; padding: 10px 22px; border-radius: 999px;
    font: inherit; font-weight: 600; text-decoration: none; cursor: pointer;
    border: 2px solid var(--c-primary); background: var(--c-primary); color: #fff;
}
.btn:hover { background: var(--c-primary-dark); border-color: var(--c-primary-dark); }
.btn-outline { background: transparent; color: inherit; border-color: currentColor; }
.btn-outline:hover { background: rgba(255, 255, 255, .12); border-color: currentColor; }
.btn-accent { background: var(--c-accent); border-color: var(--c-accent); color: #2a1d05; }
.btn-sm { padding: 6px 14px; font-size: .9rem; }

.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

.card {
    background: var(--c-surface); border: 1px solid var(--c-border);
    border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow);
}
.card h3 { margin-bottom: .35em; }
.card .icon { font-size: 1.8rem; margin-bottom: 8px; }
.tag {
    display: inline-block; padding: 2px 10px; border-radius: 999px;
    background: var(--c-bg); border: 1px solid var(--c-border);
    font-size: .8rem; color: var(--c-muted); margin: 0 4px 4px 0;
}
.placeholder-img {
    aspect-ratio: 16 / 10; border-radius: 8px; margin-bottom: 14px;
    background: repeating-linear-gradient(45deg, #e7eeed, #e7eeed 10px, #eff4f3 10px, #eff4f3 20px);
    display: grid; place-items: center; color: var(--c-muted); font-size: .85rem;
}
.note {
    border-left: 4px solid var(--c-accent); background: #fff8ec;
    padding: 12px 16px; border-radius: 0 8px 8px 0; font-size: .95rem;
}
.stat { font-size: 2rem; font-weight: 700; color: var(--c-primary); line-height: 1.1; }

.compare { width: 100%; border-collapse: collapse; background: var(--c-surface); border-radius: var(--radius); overflow: hidden; }
.compare th, .compare td { padding: 12px 14px; border-bottom: 1px solid var(--c-border); text-align: left; vertical-align: top; }
.compare th { background: var(--c-bg); }
.table-wrap { overflow-x: auto; border: 1px solid var(--c-border); border-radius: var(--radius); }

.steps { counter-reset: step; list-style: none; padding: 0; margin: 0; display: grid; gap: 16px; }
.steps li { counter-increment: step; position: relative; padding-left: 52px; }
.steps li::before {
    content: counter(step); position: absolute; left: 0; top: 0;
    width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center;
    background: var(--c-primary); color: #fff; font-weight: 700;
}

/* ----- Forms ----- */
.form { display: grid; gap: 14px; }
.form label { font-weight: 600; font-size: .95rem; display: block; margin-bottom: 4px; }
.form input, .form select, .form textarea {
    width: 100%; padding: 10px 12px; font: inherit;
    border: 1px solid var(--c-border); border-radius: 8px; background: #fff;
}
.form textarea { min-height: 110px; resize: vertical; }
.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; }
.alert-ok { background: #e6f4ec; color: #1d5c39; }
.alert-err { background: #fbe9e7; color: #8a2a21; }

/* ----- Gallery filter ----- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.filter-bar button {
    padding: 6px 16px; border-radius: 999px; border: 1px solid var(--c-border);
    background: var(--c-surface); font: inherit; cursor: pointer;
}
.filter-bar button.active { background: var(--c-primary); color: #fff; border-color: var(--c-primary); }

/* ----- Kok River dashboard ----- */
.dash { display: grid; grid-template-columns: 2fr 1fr; gap: 20px; }
@media (max-width: 900px) { .dash { grid-template-columns: 1fr; } }
#map { height: 460px; border-radius: var(--radius); border: 1px solid var(--c-border); }
.controls { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-bottom: 14px; }
.controls select, .controls input[type=range] { font: inherit; }
.controls input[type=range] { flex: 1; min-width: 180px; }
.time-label { font-variant-numeric: tabular-nums; font-weight: 600; min-width: 150px; }
.legend-bar { height: 10px; border-radius: 5px; background: linear-gradient(90deg, #2c7bb6, #abd9e9, #ffffbf, #fdae61, #d7191c); }
.legend-scale { display: flex; justify-content: space-between; font-size: .8rem; color: var(--c-muted); }
.chart-box { position: relative; height: 280px; }

.light-list { display: grid; gap: 10px; }
.light {
    display: flex; align-items: center; gap: 12px; padding: 12px 14px;
    border: 1px solid var(--c-border); border-radius: 10px; background: var(--c-surface);
}
.light-dot { width: 18px; height: 18px; border-radius: 50%; flex: none; }
.light-dot.ok { background: var(--c-ok); }
.light-dot.warn { background: var(--c-warn); }
.light-dot.bad { background: var(--c-bad); }
.light strong { display: block; }
.light small { color: var(--c-muted); }

/* ----- Admin ----- */
.status { font-size: .8rem; font-weight: 600; padding: 2px 10px; border-radius: 999px; }
.status-pending { background: #fff3d6; color: #7a5600; }
.status-approved { background: #e6f4ec; color: #1d5c39; }
.status-rejected { background: #fbe9e7; color: #8a2a21; }
.inline-form { display: inline; }

/* ----- Footer ----- */
.site-footer { background: #13292c; color: #cfdcdd; padding: 40px 0 20px; margin-top: 40px; }
.site-footer a { color: #cfdcdd; text-decoration: none; }
.site-footer ul { list-style: none; padding: 0; margin: 8px 0 0; columns: 2; }
.site-footer .muted { color: #8fa3a5; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 24px; }
.footer-bottom { border-top: 1px solid #2a4245; margin-top: 24px; padding-top: 16px; font-size: .85rem; }