/**
 * Shared UI — loaded by admin layout, learner layout, and auth screens.
 * Role-specific rules live in admin.css and learner.css.
 */

/* Base layout */
body {
    font-family: 'Figtree', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    margin: 0;
    background: #020617;
    color: #e5e7eb;
}

.layout-admin {
    display: flex;
    min-height: 100vh;
    background: radial-gradient(circle at top left, #1e293b, #020617);
}

/* Centered variant for auth */
.layout-admin--center {
    align-items: center;
    justify-content: center;
}

/* Main column */
.admin-main {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.admin-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.9rem 1.5rem;
    border-bottom: 1px solid rgba(148, 163, 184, 0.22);
    background: linear-gradient(to right, rgba(15, 23, 42, 0.96), rgba(15, 23, 42, 0.84));
    backdrop-filter: blur(18px);
    position: sticky;
    top: 0;
    z-index: 20;
}

.admin-topbar__title {
    font-size: 0.96rem;
    font-weight: 500;
    color: #e5e7eb;
}

.admin-topbar__left {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    min-width: 0;
}

.admin-topbar__subtitle {
    font-size: 0.8rem;
    color: #9ca3af;
}

.admin-topbar__right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.82rem;
    color: #9ca3af;
}

.admin-pill {
    border-radius: 999px;
    padding: 0.14rem 0.6rem;
    font-size: 0.74rem;
    border: 1px solid rgba(148, 163, 184, 0.6);
}

.admin-pill--accent {
    background: rgba(30, 64, 175, 0.35);
    border-color: rgba(129, 140, 248, 0.75);
    color: #dbeafe;
}

.admin-avatar {
    width: 28px;
    height: 28px;
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 184, 0.55);
    background: radial-gradient(circle at top, #1d4ed8, #020617);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    color: #e5e7eb;
}

.admin-content {
    padding: 1.4rem 1.7rem 2.1rem;
    box-sizing: border-box;
    min-width: 0;
}

.admin-page-title {
    font-size: 1.18rem;
    font-weight: 600;
    margin-bottom: 0.45rem;
    color: #f9fafb;
}

.admin-page-subtitle {
    font-size: 0.86rem;
    color: #9ca3af;
    margin-bottom: 1.4rem;
}

/* Cards & buttons */
.admin-card {
    background: radial-gradient(circle at top left, rgba(30, 64, 175, 0.25), rgba(15, 23, 42, 0.98));
    border-radius: 0.85rem;
    padding: 1rem 1.1rem 1.1rem;
    border: 1px solid rgba(148, 163, 184, 0.35);
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.65);
}

.admin-card--narrow {
    max-width: 380px;
    width: 100%;
}

.admin-card__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.65rem;
    flex-wrap: wrap;
    margin-bottom: 0.8rem;
}

.admin-card__title {
    font-size: 0.94rem;
    font-weight: 500;
    color: #e5e7eb;
}

.admin-card__meta {
    font-size: 0.8rem;
    color: #9ca3af;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    border-radius: 999px;
    border: none;
    cursor: pointer;
    padding: 0.35rem 0.8rem;
    font-size: 0.8rem;
    font-weight: 500;
    white-space: nowrap;
}

.btn--primary {
    background: linear-gradient(to right, #2563eb, #4f46e5);
    color: #f9fafb;
    box-shadow: 0 5px 30px rgba(37, 99, 235, 1.0);
}

.btn--ghost {
    background: rgba(15, 23, 42, 0.95);
    color: #e5e7eb;
    border: 1px solid rgba(148, 163, 184, 0.6);
}

.btn:disabled {
    opacity: 0.6;
    cursor: default;
}

/* Tables */
.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.84rem;
    color: #cbd5f5;
}

.admin-table-wrap {
    width: 100%;
    overflow-x: auto;
}

.admin-table th,
.admin-table td {
    padding: 0.55rem 0.3rem;
    text-align: left;
    border-bottom: 1px solid rgba(30, 41, 59, 0.95);
}

.admin-table th {
    font-size: 0.76rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: #9ca3af;
}

.admin-table tbody tr:hover td {
    background: rgba(15, 23, 42, 0.85);
}

.admin-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    padding: 0.12rem 0.55rem;
    font-size: 0.74rem;
}

.admin-badge--success {
    background: rgba(22, 163, 74, 0.18);
    color: #bbf7d0;
    border: 1px solid rgba(34, 197, 94, 0.5);
}

.admin-badge--muted {
    background: rgba(15, 23, 42, 0.95);
    color: #94a3b8;
    border: 1px solid rgba(148, 163, 184, 0.4);
}

.admin-badge--warn {
    background: rgba(234, 179, 8, 0.14);
    color: #fde68a;
    border: 1px solid rgba(250, 204, 21, 0.42);
}

.admin-badge--danger {
    background: rgba(220, 38, 38, 0.16);
    color: #fecaca;
    border: 1px solid rgba(248, 113, 113, 0.48);
}

.admin-text-muted {
    color: #9ca3af;
    font-size: 0.8rem;
}

.admin-code-id {
    font-size: 0.78rem;
    color: #e2e8f0;
    background: rgba(15, 23, 42, 0.9);
    padding: 0.12rem 0.35rem;
    border-radius: 0.35rem;
    border: 1px solid rgba(148, 163, 184, 0.35);
}

.admin-alert {
    font-size: 0.8rem;
    padding: 0.4rem 0.55rem;
    border-radius: 0.5rem;
}

.admin-alert--error {
    background: rgba(127, 29, 29, 0.4);
    color: #fecaca;
    border: 1px solid rgba(239, 68, 68, 0.7);
}

/* Grid helpers */
.admin-grid-2 {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 1rem;
}

.admin-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.9rem;
}

.admin-grid-4 {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.9rem;
}

.admin-metric {
    border-radius: 0.75rem;
    padding: 0.75rem 0.8rem;
    border: 1px solid rgba(148, 163, 184, 0.5);
    background: radial-gradient(circle at top, rgba(30, 64, 175, 0.4), rgba(15, 23, 42, 0.98));
    font-size: 0.8rem;
}

.admin-metric__label {
    color: #9ca3af;
    margin-bottom: 0.25rem;
}

.admin-metric__value {
    font-size: 1.05rem;
    font-weight: 600;
    color: #f9fafb;
}

.admin-metric__hint {
    margin-top: 0.1rem;
    color: #6b7280;
    font-size: 0.75rem;
}

/* Forms */
.admin-form-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem;
    margin-bottom: 0.7rem;
}

.admin-field {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    font-size: 0.8rem;
}

.admin-field label {
    color: #9ca3af;
}

.admin-checkbox-inline {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.admin-checkbox {
    accent-color: #2563eb;
}

.admin-input,
.admin-select {
    border-radius: 0.55rem;
    border: 1px solid rgba(148, 163, 184, 0.6);
    background: rgba(15, 23, 42, 0.9);
    color: #e5e7eb;
    padding: 0.4rem 0.55rem;
    font-size: 0.82rem;
    min-width: 0;
}

.admin-input:focus,
.admin-select:focus {
    outline: none;
    border-color: rgba(59, 130, 246, 0.8);
    box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.8);
}

/* Modal */
.admin-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 50;
}

.admin-modal {
    max-width: 520px;
    width: 100%;
}

.admin-logout-form {
    margin: 0;
}

/* Responsive (shared) */
@media (max-width: 960px) {
    .layout-admin {
        flex-direction: row;
    }

    .admin-main {
        min-height: 100vh;
        width: 100%;
    }

    .admin-topbar {
        padding: 0.8rem 1rem;
        align-items: flex-start;
        gap: 0.75rem;
        flex-wrap: wrap;
    }

    .admin-topbar__right {
        width: 100%;
        justify-content: flex-start;
        flex-wrap: wrap;
    }

    .admin-content {
        padding: 1rem 1rem 1.4rem;
    }

    .admin-grid-2,
    .admin-grid-3,
    .admin-grid-4 {
        grid-template-columns: minmax(0, 1fr);
    }

    .admin-modal {
        max-width: 92vw;
    }
}

@media (max-width: 700px) {
    .btn {
        padding: 0.45rem 0.85rem;
        font-size: 0.84rem;
    }

    .admin-card {
        padding: 0.85rem 0.85rem 0.95rem;
    }

    .admin-page-title {
        font-size: 1.08rem;
    }

    .admin-page-subtitle {
        font-size: 0.82rem;
        margin-bottom: 1rem;
    }

    .admin-form-row {
        gap: 0.55rem;
        margin-bottom: 0.55rem;
    }

    .admin-field {
        width: 100%;
    }

    .admin-field .btn {
        width: 100%;
        justify-content: center;
    }

    /* Keep wide tables usable on mobile by enabling horizontal scrolling. */
    .admin-card {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .admin-table-wrap {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .admin-table {
        min-width: 640px;
        width: max-content;
        font-size: 0.8rem;
    }

    .admin-table th,
    .admin-table td {
        padding: 0.5rem 0.32rem;
        white-space: nowrap;
    }

    .admin-modal-overlay {
        align-items: flex-start;
        overflow-y: auto;
        padding: 0.8rem 0;
    }

    .admin-modal {
        margin-top: 0.45rem;
        max-width: 94vw;
    }
}

@media (max-width: 460px) {
    .admin-topbar__subtitle {
        display: none;
    }

    .admin-pill {
        font-size: 0.7rem;
        padding: 0.12rem 0.45rem;
    }

    .admin-avatar {
        width: 24px;
        height: 24px;
    }
}