:root {
    --navy: #062a60;
    --navy-deep: #031f49;
    --primary: #064db8;
    --primary-dark: #043d91;
    --primary-soft: #eaf3ff;
    --sky: #d8eaff;
    --ink: #0a234c;
    --text: #314363;
    --muted: #71809b;
    --border: #dce5f1;
    --surface: #ffffff;
    --background: #f7faff;
    --success: #11844b;
    --danger: #c9363e;
    --warning: #b77205;
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 18px;
    --shadow-sm: 0 4px 16px rgba(5, 44, 99, .07);
    --shadow: 0 12px 32px rgba(5, 44, 99, .11);
    --container: 1320px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--text); background: var(--surface); font-family: "Noto Sans Thai", system-ui, sans-serif; font-size: 15px; line-height: 1.65; }
img { display: block; max-width: 100%; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }
button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid #f4b72c; outline-offset: 3px; }
.container { width: min(calc(100% - 48px), var(--container)); margin-inline: auto; }
.button { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; gap: 9px; padding: 10px 22px; border: 1px solid var(--primary); border-radius: var(--radius-sm); background: var(--primary); color: #fff; font-weight: 700; cursor: pointer; transition: transform .18s ease, background .18s ease; }
.button:hover { color: #fff; background: var(--primary-dark); transform: translateY(-1px); }
.button-outline { color: var(--primary); background: #fff; }
.button-outline:hover { color: #fff; }
.button-sm { min-height: 40px; padding: 8px 17px; font-size: 14px; }
.card { border: 1px solid var(--border); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow-sm); }
.badge { display: inline-flex; align-items: center; min-height: 24px; padding: 2px 9px; border-radius: 5px; color: #fff; background: var(--primary); font-size: 12px; font-weight: 700; }
.badge.purple { background: #8d6be8; }
.badge.green { background: #2f9a5f; }
.muted { color: var(--muted); }
.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 18px; }
.section-heading h2 { margin: 0; color: var(--primary-dark); font-size: clamp(21px, 2vw, 28px); }
.empty-state { padding: 56px 20px; text-align: center; color: var(--muted); }
.empty-state i { display: block; margin-bottom: 14px; color: #9bb9e5; font-size: 52px; }
.alert { margin: 0 0 18px; padding: 13px 16px; border-radius: var(--radius-sm); border: 1px solid; }
.alert-success { color: #0c6d3d; border-color: #a9dec2; background: #edf9f2; }
.alert-danger { color: #9f262d; border-color: #efb8bc; background: #fff1f2; }
.field-error { color: var(--danger); font-size: 13px; }

@media (max-width: 720px) {
    .container { width: min(calc(100% - 28px), var(--container)); }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}