/* ============================================
   IEEE Lendi Student Branch — Committee admin
   Layered on top of styles.css: the tokens,
   buttons and form fields all come from there.
   ============================================ */

.admin-body {
    min-height: 100vh;
    background-color: var(--background-alt);
    background-image:
        linear-gradient(var(--grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 56px 56px, 56px 56px;
}

/* --------------------------------------------
   Sign in
   -------------------------------------------- */
.admin-gate {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1.5rem;
    background: var(--primary-deeper);
    background-image:
        radial-gradient(circle at 20% 20%, rgba(0, 98, 155, 0.55), transparent 55%),
        radial-gradient(circle at 80% 80%, rgba(255, 199, 44, 0.12), transparent 50%),
        linear-gradient(var(--grid-line-dark) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-line-dark) 1px, transparent 1px);
    background-size: auto, auto, 56px 56px, 56px 56px;
}

.admin-login {
    width: 100%;
    max-width: 420px;
    padding: 2.5rem;
    background: var(--surface);
    border-radius: var(--radius-xl);
    border-top: 4px solid var(--accent);
    box-shadow: var(--shadow-xl);
}

.admin-login-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.75rem;
    font-family: var(--font-display);
    font-size: 1rem;
    letter-spacing: -0.01em;
    color: var(--text-secondary);
}

.admin-login-brand strong {
    color: var(--primary);
}

.admin-login-brand .logo-icon,
.admin-brand .logo-icon {
    width: 34px;
    height: 34px;
    flex-shrink: 0;
    color: var(--primary);
}

.admin-login-brand .logo-icon svg,
.admin-brand .logo-icon svg {
    width: 100%;
    height: 100%;
}

.admin-login h1 {
    font-family: var(--font-display);
    font-size: 1.625rem;
    font-weight: 800;
    letter-spacing: -0.035em;
    color: var(--text-primary);
}

.admin-login-note {
    margin: 0.375rem 0 1.75rem;
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

/* --------------------------------------------
   Shell
   -------------------------------------------- */
.admin-topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    flex-wrap: wrap;
    padding: 1rem 2rem;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.admin-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.admin-brand-text {
    display: flex;
    flex-direction: column;
    font-family: var(--font-display);
    font-size: 1rem;
    line-height: 1.2;
    color: var(--text-secondary);
}

.admin-brand-text strong {
    color: var(--primary);
}

.admin-brand-text em {
    font-family: var(--font-mono);
    font-size: 0.625rem;
    font-style: normal;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.admin-account {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.admin-whoami {
    display: flex;
    flex-direction: column;
    text-align: right;
    line-height: 1.3;
}

.admin-whoami strong {
    font-family: var(--font-display);
    font-size: 0.9375rem;
    color: var(--text-primary);
}

.admin-whoami span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.admin-account .btn {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Tabs */
.admin-tabs {
    position: sticky;
    top: 69px;
    z-index: 19;
    display: flex;
    gap: 0.25rem;
    padding: 0 2rem;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    overflow-x: auto;
}

.admin-tab {
    position: relative;
    padding: 0.875rem 1.125rem;
    background: none;
    border: none;
    cursor: pointer;
    white-space: nowrap;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.admin-tab::after {
    content: '';
    position: absolute;
    left: 1.125rem;
    right: 1.125rem;
    bottom: -1px;
    height: 3px;
    background: var(--accent);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.admin-tab:hover {
    color: var(--primary);
}

.admin-tab.is-active {
    color: var(--primary-dark);
}

.admin-tab.is-active::after {
    transform: scaleX(1);
}

.admin-main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* --------------------------------------------
   Stats
   -------------------------------------------- */
.admin-stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.admin-stat {
    padding: 1.25rem 1.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-left: 3px solid var(--primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.admin-stat.is-good { border-left-color: #1a7f4b; }
.admin-stat.is-warn { border-left-color: #d99f00; }

.admin-stat span {
    display: block;
    margin-bottom: 0.375rem;
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-secondary);
}

.admin-stat strong {
    font-family: var(--font-display);
    font-size: 1.875rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--text-primary);
}

/* --------------------------------------------
   Toolbar
   -------------------------------------------- */
.admin-toolbar {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.admin-search {
    position: relative;
    flex: 1 1 320px;
}

.admin-search svg {
    position: absolute;
    left: 0.875rem;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: var(--text-muted);
    pointer-events: none;
}

.admin-search input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.75rem;
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.9375rem;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.admin-search input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 98, 155, 0.14);
}

.admin-pagesize {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-secondary);
}

.admin-pagesize select {
    padding: 0.6rem 0.75rem;
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    letter-spacing: normal;
    color: var(--text-primary);
    cursor: pointer;
}

.admin-toolbar .btn {
    padding: 0.75rem 1.25rem;
    font-size: 0.9375rem;
}

/* --------------------------------------------
   Table
   -------------------------------------------- */
.admin-table-wrap {
    overflow-x: auto;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
}

.admin-table th {
    position: sticky;
    top: 0;
    padding: 0.875rem 1rem;
    background: var(--background-alt);
    border-bottom: 2px solid var(--border-strong);
    text-align: left;
    white-space: nowrap;
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-secondary);
}

.admin-table th.is-sortable {
    cursor: pointer;
    user-select: none;
    transition: color var(--transition-fast);
}

.admin-table th.is-sortable:hover {
    color: var(--primary);
}

.admin-table th.is-sortable::after {
    content: '↕';
    margin-left: 0.375rem;
    opacity: 0.35;
}

.admin-table td {
    padding: 0.875rem 1rem;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-secondary);
    vertical-align: middle;
}

.admin-table tbody tr:last-child td {
    border-bottom: none;
}

.admin-table tbody tr {
    transition: background var(--transition-fast);
}

.admin-table tbody tr:hover {
    background: var(--surface-hover);
}

.admin-table .is-strong {
    font-weight: 600;
    color: var(--text-primary);
}

.admin-table .is-mono {
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

.admin-table .is-numeric,
.admin-table th.is-numeric {
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.admin-table .is-muted {
    font-size: 0.875rem;
    color: var(--text-muted);
    white-space: nowrap;
}

.admin-empty {
    padding: 3rem 1rem !important;
    text-align: center;
    color: var(--text-muted);
}

.admin-pill {
    display: inline-block;
    padding: 0.25rem 0.625rem;
    border-radius: 999px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
}

.admin-pill.is-valid {
    background: rgba(26, 127, 75, 0.12);
    color: #14603a;
}

.admin-pill.is-expired {
    background: rgba(198, 40, 40, 0.1);
    color: #a01c1c;
}

.admin-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition-fast);
}

.admin-link:hover {
    border-bottom-color: var(--primary);
}

.admin-toggle {
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    border: 1px solid transparent;
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.admin-toggle.is-active {
    background: rgba(26, 127, 75, 0.12);
    border-color: rgba(26, 127, 75, 0.3);
    color: #14603a;
}

.admin-toggle.is-disabled {
    background: rgba(125, 143, 161, 0.14);
    border-color: var(--border-strong);
    color: var(--text-muted);
}

.admin-toggle:hover:not(:disabled) {
    filter: brightness(0.94);
}

.admin-toggle:disabled {
    opacity: 0.5;
    cursor: default;
}

/* Pagination */
.admin-pager {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.25rem;
}

.admin-pager .btn {
    padding: 0.625rem 1.25rem;
    font-size: 0.9375rem;
}

.admin-pager .btn:disabled {
    opacity: 0.45;
    cursor: default;
    transform: none;
    border-color: var(--border);
    color: var(--text-muted);
}

.admin-pager span {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--text-secondary);
    text-align: center;
    min-width: 220px;
}

/* --------------------------------------------
   Cards
   -------------------------------------------- */
.admin-split {
    display: grid;
    grid-template-columns: minmax(0, 400px) minmax(0, 1fr);
    gap: 1.5rem;
    align-items: start;
}

.admin-card {
    padding: 2rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-top: 3px solid var(--primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.admin-card-narrow {
    max-width: 480px;
}

.admin-card h2 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--text-primary);
}

.admin-card-note {
    margin: 0.5rem 0 1.5rem;
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.admin-card .admin-table-wrap {
    border: none;
    box-shadow: none;
    border-radius: 0;
}

.admin-hint {
    margin-top: 0.875rem;
    font-size: 0.8125rem;
    line-height: 1.5;
    color: var(--text-muted);
}

/* --------------------------------------------
   Alerts
   -------------------------------------------- */
.admin-alert {
    margin-bottom: 1.25rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    border-left: 3px solid var(--border-strong);
    background: var(--background-alt);
    font-size: 0.9375rem;
    line-height: 1.5;
    color: var(--text-secondary);
}

.admin-alert.is-info {
    border-left-color: var(--primary);
    color: var(--primary-dark);
}

.admin-alert.is-ok {
    border-left-color: #1a7f4b;
    background: rgba(26, 127, 75, 0.08);
    color: #14603a;
}

.admin-alert.is-error {
    border-left-color: #c62828;
    background: rgba(198, 40, 40, 0.07);
    color: #a01c1c;
}

/* --------------------------------------------
   Responsive
   -------------------------------------------- */
@media (max-width: 1100px) {
    .admin-stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

@media (max-width: 720px) {
    .admin-topbar,
    .admin-tabs {
        padding-left: 1.25rem;
        padding-right: 1.25rem;
    }

    .admin-tabs {
        top: 61px;
    }

    .admin-main {
        padding: 1.25rem;
    }

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

    .admin-card {
        padding: 1.5rem;
    }

    .admin-whoami {
        display: none;
    }

    .admin-pager {
        flex-wrap: wrap;
    }
}