:root {
    --green-950: #022c22;
    --green-900: #064e3b;
    --green-800: #065f46;
    --green-700: #047857;
    --green-600: #059669;
    --green-100: #d1fae5;
    --green-50: #ecfdf5;
    --slate-950: #0f172a;
    --slate-800: #1e293b;
    --slate-700: #334155;
    --slate-600: #475569;
    --slate-500: #64748b;
    --slate-300: #cbd5e1;
    --slate-200: #e2e8f0;
    --slate-100: #f1f5f9;
    --slate-50: #f8fafc;
    --white: #fff;
    --danger: #b91c1c;
    --warning: #a16207;
    --shadow: 0 18px 45px rgb(15 23 42 / 0.08);
}

* { box-sizing: border-box; }

html { color-scheme: light; }

body {
    margin: 0;
    color: var(--slate-800);
    background: var(--slate-50);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.55;
}

a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }

.portal-topbar {
    position: sticky;
    top: 0;
    z-index: 30;
    border-bottom: 1px solid var(--slate-200);
    background: rgb(255 255 255 / 0.96);
    backdrop-filter: blur(12px);
}

.portal-topbar-inner {
    width: min(1180px, calc(100% - 36px));
    min-height: 72px;
    margin: 0 auto;
    display: flex;
    gap: 22px;
    align-items: center;
}

.portal-brand { display: flex; gap: 10px; align-items: center; flex: 0 0 auto; }
.portal-brand-mark {
    display: grid;
    width: 40px;
    height: 40px;
    place-items: center;
    border-radius: 12px;
    color: var(--white);
    background: linear-gradient(140deg, var(--green-900), var(--green-600));
    font-size: .78rem;
    font-weight: 900;
    letter-spacing: .05em;
}
.portal-brand strong, .portal-brand small { display: block; }
.portal-brand strong { color: var(--green-950); font-size: .86rem; letter-spacing: .06em; }
.portal-brand small { color: var(--slate-500); font-size: .68rem; }

.portal-nav { display: flex; gap: 4px; align-items: center; flex: 1; }
.portal-nav a, .public-nav a {
    padding: 9px 11px;
    border-radius: 9px;
    color: var(--slate-600);
    font-size: .78rem;
    font-weight: 750;
}
.portal-nav a:hover, .portal-nav a.active, .public-nav a:hover { color: var(--green-800); background: var(--green-50); }

.portal-account { display: flex; gap: 12px; align-items: center; }
.balance-pill {
    display: flex;
    gap: 9px;
    align-items: center;
    padding: 8px 11px;
    border: 1px solid var(--green-100);
    border-radius: 10px;
    background: var(--green-50);
}
.balance-pill span { color: var(--slate-500); font-size: .7rem; }
.balance-pill strong { color: var(--green-800); font-size: .8rem; }
.logout-link { color: var(--slate-500); font-size: .75rem; font-weight: 750; }
.logout-link:hover { color: var(--danger); }

.portal-main { width: min(1180px, calc(100% - 24px)); min-height: calc(100vh - 168px); margin: 0 auto; padding: 22px 0 42px; }

.page-heading { display: flex; gap: 14px; align-items: flex-start; flex-direction: column; justify-content: space-between; margin-bottom: 20px; }
.page-heading p, .section-heading p { margin: 5px 0 0; color: var(--slate-500); }
.page-heading h1 { margin: 0; color: var(--slate-950); font-size: clamp(1.7rem, 4vw, 2.4rem); line-height: 1.1; letter-spacing: -.035em; }
.eyebrow { margin: 0 0 7px !important; color: var(--green-700) !important; font-size: .7rem; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }

.portal-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 14px; }
.top-gap { margin-top: 20px; }
.span-8, .span-7, .span-6, .span-5, .span-4, .span-12 { grid-column: 1 / -1; }

.card {
    min-width: 0;
    padding: 19px;
    border: 1px solid var(--slate-200);
    border-radius: 17px;
    background: var(--white);
    box-shadow: 0 8px 28px rgb(15 23 42 / 0.04);
}
.card h2, .card h3 { color: var(--slate-950); }
.card h2 { margin: 0; font-size: 1.15rem; }
.card h3 { margin: 0; font-size: .96rem; }

.hero-card {
    position: relative;
    overflow: hidden;
    min-height: 230px;
    padding: 25px 21px;
    border-radius: 20px;
    color: var(--white);
    background: radial-gradient(circle at 90% 0, rgb(251 191 36 / .25), transparent 30%), linear-gradient(130deg, var(--green-950), var(--green-700));
    box-shadow: var(--shadow);
}
.hero-card::after { content: ""; position: absolute; right: -50px; bottom: -70px; width: 240px; height: 240px; border: 38px solid rgb(255 255 255 / .06); border-radius: 50%; }
.hero-card > * { position: relative; z-index: 1; }
.hero-card h1 { max-width: 680px; margin: 7px 0 12px; color: var(--white); font-size: clamp(1.65rem, 4vw, 2.6rem); line-height: 1.08; }
.hero-card p { max-width: 670px; margin: 0; color: #d1fae5; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 24px; }

.button, button.button {
    display: inline-flex;
    min-height: 44px;
    padding: 0 17px;
    align-items: center;
    justify-content: center;
    border: 1px solid transparent;
    border-radius: 10px;
    color: var(--white);
    background: var(--green-700);
    font-size: .82rem;
    font-weight: 850;
}
.button:hover { background: var(--green-800); }
.button:disabled { opacity: .55; cursor: not-allowed; }
.button.white { color: var(--green-900); background: var(--white); }
.button.outline { border-color: var(--slate-300); color: var(--slate-700); background: var(--white); }
.button.danger { color: var(--danger); border-color: #fecaca; background: #fef2f2; }
.button.small { min-height: 36px; padding: 0 12px; font-size: .74rem; }

.stats { display: grid; grid-template-columns: 1fr; gap: 10px; margin-top: 18px; }
.stat { padding: 18px; border: 1px solid var(--slate-200); border-radius: 14px; background: var(--white); }
.stat span { display: block; color: var(--slate-500); font-size: .72rem; }
.stat strong { display: block; margin-top: 4px; color: var(--slate-950); font-size: 1.35rem; }

.section-heading { display: flex; gap: 10px; align-items: flex-start; flex-direction: column; justify-content: space-between; margin-bottom: 17px; }
.section-heading a { color: var(--green-700); font-size: .75rem; font-weight: 850; }

.course-list, .transaction-list, .review-list { display: grid; gap: 10px; }
.course-row, .transaction-row, .review-row {
    display: flex;
    gap: 16px;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
    border-top: 1px solid var(--slate-100);
}
.course-row:first-child, .transaction-row:first-child, .review-row:first-child { border-top: 0; }
.course-code { color: var(--green-800); font-size: 1rem; font-weight: 900; letter-spacing: .04em; }
.row-meta { color: var(--slate-500); font-size: .73rem; }
.transaction-detail { min-width: 0; flex: 1; }
.transaction-detail strong { display: block; overflow: hidden; color: var(--slate-800); font-size: .82rem; text-overflow: ellipsis; white-space: nowrap; }
.amount { flex: 0 0 auto; font-size: .82rem; font-weight: 900; }
.amount.credit { color: var(--green-700); }
.amount.debit { color: var(--danger); }

.empty-state { padding: 30px 18px; border: 1px dashed var(--slate-300); border-radius: 13px; color: var(--slate-500); background: var(--slate-50); text-align: center; }
.empty-state strong { display: block; margin-bottom: 5px; color: var(--slate-700); }

.portal-form { display: grid; gap: 17px; }
.field { display: grid; gap: 7px; }
.field label { color: var(--slate-700); font-size: .78rem; font-weight: 800; }
.field input, .field select, .field textarea {
    width: 100%;
    padding: 12px 13px;
    border: 1px solid var(--slate-300);
    border-radius: 10px;
    color: var(--slate-950);
    background: var(--white);
    outline: none;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--green-600); box-shadow: 0 0 0 3px rgb(5 150 105 / .12); }
.field small { color: var(--slate-500); font-size: .71rem; }
.form-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }

.portal-notice { margin-bottom: 20px; padding: 13px 15px; border: 1px solid; border-radius: 11px; font-size: .82rem; }
.portal-notice.success { border-color: #a7f3d0; color: #065f46; background: #ecfdf5; }
.portal-notice.error { border-color: #fecaca; color: #991b1b; background: #fef2f2; }
.portal-notice.info { border-color: #bfdbfe; color: #1e40af; background: #eff6ff; }
.compact-notice { margin: 18px 0 0; }
.narrow-card { width: min(560px, 100%); margin-right: auto; margin-left: auto; }

.quick-amounts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.quick-amounts label { position: relative; }
.quick-amounts input { position: absolute; opacity: 0; pointer-events: none; }
.quick-amounts span { display: block; padding: 11px 6px; border: 1px solid var(--slate-300); border-radius: 9px; color: var(--slate-700); background: var(--white); text-align: center; font-size: .78rem; font-weight: 800; }
.quick-amounts input:checked + span { border-color: var(--green-600); color: var(--green-800); background: var(--green-50); }

.table-wrap { overflow-x: auto; border: 1px solid var(--slate-200); border-radius: 14px; background: var(--white); }
.data-table { width: 100%; min-width: 640px; border-collapse: collapse; font-size: .78rem; }
.data-table th, .data-table td { padding: 13px 14px; border-bottom: 1px solid var(--slate-100); text-align: left; vertical-align: top; }
.data-table th { color: var(--slate-600); background: var(--slate-50); font-size: .68rem; letter-spacing: .05em; text-transform: uppercase; }
.data-table tr:last-child td { border-bottom: 0; }

.pagination { display: flex; gap: 8px; align-items: center; justify-content: flex-end; margin-top: 16px; }
.pagination a, .pagination span { padding: 7px 10px; border: 1px solid var(--slate-200); border-radius: 8px; background: var(--white); font-size: .74rem; }

.rating-stars { display: flex; gap: 8px; }
.rating-stars label { cursor: pointer; }
.rating-stars input { position: absolute; opacity: 0; }
.rating-stars span { display: grid; width: 42px; height: 42px; place-items: center; border: 1px solid var(--slate-300); border-radius: 10px; background: var(--white); font-weight: 850; }
.rating-stars input:checked + span { border-color: #f59e0b; color: #92400e; background: #fffbeb; }

.public-topbar { justify-content: space-between; }
.public-nav { display: flex; gap: 4px; align-items: center; }
.public-nav .button-link { color: var(--white); background: var(--green-700); }
.public-main { width: min(900px, calc(100% - 36px)); }
.legal-hero { padding: 21px; border-radius: 14px; color: var(--white); background: linear-gradient(130deg, var(--green-950), var(--green-700)); }
.legal-hero h1 { margin: 5px 0 8px; font-size: clamp(1.8rem, 5vw, 2.8rem); }
.legal-hero p { margin: 0; color: #d1fae5; }
.prose-card { margin-top: 20px; padding: 21px; border: 1px solid var(--slate-200); border-radius: 14px; background: var(--white); }
.prose-card h2 { margin-top: 28px; color: var(--slate-950); font-size: 1.1rem; }
.prose-card h2:first-child { margin-top: 0; }
.prose-card p, .prose-card li { color: var(--slate-600); font-size: .88rem; }
.prose-card a { color: var(--green-700); font-weight: 800; }

.admin-login { width: min(440px, calc(100% - 36px)); margin: 8vh auto; }
.admin-login .card { padding: 32px; box-shadow: var(--shadow); }
.admin-badge { display: inline-block; padding: 6px 9px; border-radius: 999px; color: #7c2d12; background: #ffedd5; font-size: .68rem; font-weight: 900; letter-spacing: .08em; }
.admin-actions { display: flex; flex-wrap: wrap; gap: 7px; }
.admin-actions input, .admin-actions select {
    min-height: 36px;
    width: 100%;
    max-width: none;
    padding: 6px 8px;
    border: 1px solid var(--slate-300);
    border-radius: 8px;
    background: var(--white);
}
.search-field { min-width: min(360px, 100%); }
.admin-section { margin-top: 22px; }
.code-preview { max-width: 420px; max-height: 120px; overflow: hidden; color: var(--slate-500); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .7rem; white-space: pre-wrap; }
.status-badge { padding: 6px 10px; border-radius: 999px; font-size: .7rem; font-weight: 900; }
.status-badge.ready { color: #065f46; background: #d1fae5; }
.status-badge.blocked { color: #991b1b; background: #fee2e2; }
.diagnostic-list { display: grid; gap: 10px; }
.diagnostic-row { display: flex; gap: 11px; align-items: flex-start; padding: 12px; border: 1px solid var(--slate-200); border-radius: 11px; background: var(--slate-50); }
.diagnostic-row strong { color: var(--slate-800); font-size: .8rem; }
.diagnostic-row p { margin: 2px 0 0; color: var(--slate-500); font-size: .75rem; }
.diagnostic-marker { display: grid; width: 24px; height: 24px; flex: 0 0 24px; place-items: center; border-radius: 50%; color: var(--white); font-size: .72rem; font-weight: 900; }
.diagnostic-marker.ok { background: var(--green-600); }
.diagnostic-marker.bad { background: var(--danger); }

.portal-footer {
    width: min(1180px, calc(100% - 24px));
    margin: 0 auto;
    padding: 25px 0 34px;
    border-top: 1px solid var(--slate-200);
    display: flex;
    gap: 20px;
    align-items: flex-start;
    flex-direction: column;
    justify-content: space-between;
    color: var(--slate-500);
    font-size: .73rem;
}
.portal-footer strong, .portal-footer span { display: block; }
.portal-footer strong { color: var(--green-900); }
.portal-footer nav { display: flex; gap: 16px; }
.portal-footer a:hover { color: var(--green-700); }

@media (min-width: 641px) {
    .portal-main { width: min(1180px, calc(100% - 36px)); padding: 34px 0 52px; }
    .page-heading { gap: 24px; align-items: end; flex-direction: row; margin-bottom: 24px; }
    .section-heading { gap: 20px; align-items: center; flex-direction: row; }
    .hero-card { padding: 34px; }
    .card { padding: 24px; }
    .prose-card { padding: 30px; border-radius: 17px; }
    .legal-hero { padding: 38px; border-radius: 20px; }
    .stats { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-top: 20px; }
    .quick-amounts { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .admin-actions input, .admin-actions select { width: auto; max-width: 150px; }
    .portal-footer { width: min(1180px, calc(100% - 36px)); align-items: center; flex-direction: row; }
}

@media (min-width: 941px) {
    .portal-grid { grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 20px; }
    .span-8 { grid-column: span 8; }
    .span-7 { grid-column: span 7; }
    .span-6 { grid-column: span 6; }
    .span-5 { grid-column: span 5; }
    .span-4 { grid-column: span 4; }
    .span-12 { grid-column: span 12; }
}