:root {
    --sso-bg: #eef1f5;
    --sso-surface: #ffffff;
    --sso-ink: #111827;
    --sso-muted: #6b7280;
    --sso-border: #d1d5db;
    --sso-primary: #2563eb;
    --sso-primary-dark: #1d4ed8;
    --sso-primary-soft: #dbeafe;
    --sso-navy: #111827;
    --sso-navy-deep: #0f172a;

    --sso-role-admin: #f59e0b;
    --sso-role-student: #2563eb;
    --sso-role-parent: #059669;
    --sso-role-teacher: #7c3aed;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Noto Sans KR", sans-serif;
    background: var(--sso-bg);
    color: var(--sso-ink);
}

/* ---------- nav ---------- */

.sso-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1040;
    width: 100%;
    height: 64px;
    display: flex;
    align-items: center;
    background: rgba(17, 24, 39, 0.97);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.sso-brand {
    display: inline-flex;
    align-items: baseline;
    gap: 0.15rem;
    font-family: "Montserrat", "Noto Sans KR", sans-serif;
    font-weight: 800;
    letter-spacing: -0.02em;
    text-decoration: none;
}

.sso-brand-mark {
    color: #fff;
    font-size: 1.25rem;
}

.sso-brand-word {
    color: #60a5fa;
    font-size: 1.25rem;
}

.sso-nav-user {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    color: #e5e7eb;
    font-size: 0.88rem;
    font-weight: 600;
}

.sso-nav-username {
    color: #f9fafb;
}

.sso-role-pill {
    display: inline-flex;
    align-items: center;
    padding: 0.18rem 0.55rem;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: #111827;
    background: #cbd5e1;
}

.sso-role-pill--admin { background: #fde68a; color: #78350f; }
.sso-role-pill--student { background: #bfdbfe; color: #1e3a8a; }
.sso-role-pill--parent { background: #a7f3d0; color: #065f46; }
.sso-role-pill--teacher { background: #ddd6fe; color: #4c1d95; }

.sso-btn-ghost {
    border: 1px solid rgba(255, 255, 255, 0.28);
    color: #fff;
    padding: 0.4rem 0.9rem;
    font-weight: 600;
    font-size: 0.86rem;
    transition: background 0.15s ease, border-color 0.15s ease;
}

.sso-btn-ghost:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.5);
    color: #fff;
}

/* ---------- layout ---------- */

main {
    min-height: 100dvh;
    padding: 64px 0 0 !important;
}

.sso-footer {
    padding: 2rem 0;
    color: var(--sso-muted);
    font-size: 0.85rem;
}

@media (max-width: 575.98px) {
    .sso-navbar {
        height: 56px;
    }

    main {
        padding-top: 56px !important;
    }
}

/* ---------- dashboard / demo shared shell ---------- */

.sso-page-shell {
    min-height: calc(100dvh - 64px);
    background:
        radial-gradient(circle at 88% 8%, rgba(37, 99, 235, 0.10), transparent 30%),
        var(--sso-bg);
    padding: 3rem 1rem;
}

.sso-card {
    width: min(720px, 100%);
    margin: 0 auto;
    background: var(--sso-surface);
    border: 1px solid rgba(15, 23, 42, 0.1);
    box-shadow: 0 20px 45px rgba(15, 23, 42, 0.08);
    padding: 2.25rem;
}

.sso-card-kicker {
    margin: 0 0 0.6rem;
    font-size: 0.75rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--sso-primary);
}

.sso-alerts .alert {
    border-radius: 0;
    font-size: 0.88rem;
}

.sso-card h1 {
    margin: 0 0 1.5rem;
    font-family: "Montserrat", "Noto Sans KR", sans-serif;
    font-size: clamp(1.5rem, 3vw, 2rem);
    letter-spacing: -0.02em;
}

.sso-profile-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1px;
    background: var(--sso-border);
    border: 1px solid var(--sso-border);
    margin-bottom: 1.75rem;
}

.sso-profile-cell {
    background: var(--sso-surface);
    padding: 1rem 1.1rem;
}

.sso-profile-cell dt {
    font-size: 0.76rem;
    color: var(--sso-muted);
    margin-bottom: 0.3rem;
}

.sso-profile-cell dd {
    margin: 0;
    font-weight: 700;
    font-size: 1.02rem;
}

.sso-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.sso-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.75rem 1.2rem;
    border: 1px solid transparent;
    font-weight: 700;
    font-size: 0.92rem;
    text-decoration: none;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.sso-btn-primary {
    background: linear-gradient(135deg, var(--sso-primary), var(--sso-primary-dark));
    color: #fff;
}

.sso-btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 24px rgba(37, 99, 235, 0.22);
    color: #fff;
}

.sso-btn-outline {
    border-color: var(--sso-border);
    color: var(--sso-ink);
    background: #fff;
}

.sso-btn-outline:hover {
    border-color: var(--sso-primary);
    color: var(--sso-primary);
}

.sso-note {
    margin-top: 1.5rem;
    padding: 0.9rem 1rem;
    background: #f8fafc;
    border-left: 3px solid var(--sso-primary);
    color: var(--sso-muted);
    font-size: 0.88rem;
    line-height: 1.6;
}

@media (max-width: 575.98px) {
    .sso-page-shell {
        padding: 1.5rem 0.75rem;
    }

    .sso-card {
        padding: 1.5rem 1.1rem;
    }

    .sso-profile-grid {
        grid-template-columns: 1fr;
    }
}