/* ==========================================================================
   ACS — All Computer Skills
   Admin Panel Stylesheet (assets/css/admin.css)
   ========================================================================== */

.admin-layout {
    display: flex;
    min-height: 100vh;
}

/* Admin Sidebar */
.admin-sidebar {
    width: var(--sidebar-width, 260px);
    background-color: var(--color-surface);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
    z-index: 40;
    transition: all 0.2s ease;
}

.admin-sidebar-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 1.5rem;
    border-bottom: 1px solid var(--color-border);
}

.admin-nav {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.admin-nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.65rem 0.85rem;
    color: var(--color-text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: all 0.15s ease;
}

.admin-nav-item:hover {
    background-color: var(--color-surface-hover);
    color: var(--color-text-main);
}

.admin-nav-item.active {
    background-color: var(--brand-blue-light);
    color: var(--brand-blue);
    font-weight: 600;
}

.admin-nav-item svg,
.admin-nav-item i {
    width: 18px;
    height: 18px;
    font-size: 1.15rem;
    flex-shrink: 0;
}

.admin-sidebar-footer {
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--color-border);
    font-size: 0.825rem;
    color: var(--color-text-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Admin Main Content */
.admin-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    background-color: var(--color-bg);
}

.admin-topbar {
    height: var(--header-height);
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 30;
}

.admin-topbar-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-main);
}

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

.admin-content-area {
    padding: 2rem;
    flex: 1;
}

/* Stat Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1.35rem;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-bdd8e9);
}

.stat-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.4rem;
}

.stat-value {
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--color-text-main);
    line-height: 1.2;
}

.stat-subtext {
    font-size: 0.775rem;
    color: var(--color-text-light);
    margin-top: 0.35rem;
}

/* Admin Data Tables */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-surface);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.9rem;
}

.data-table th {
    padding: 0.85rem 1.25rem;
    background-color: var(--color-surface-hover);
    color: var(--color-001d39);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--color-border);
}

.data-table td {
    padding: 0.9rem 1.25rem;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-main);
    vertical-align: middle;
}

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

.data-table tr:hover td {
    background-color: var(--color-surface-hover);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-paid {
    background-color: var(--brand-blue-light);
    color: var(--color-0a4174);
    border: 1px solid var(--color-bdd8e9);
}

.badge-published, .badge-active {
    background-color: var(--color-success-bg);
    color: var(--color-success);
}

.badge-draft, .badge-pending, .badge-inactive {
    background-color: var(--color-warning-bg);
    color: var(--color-warning);
}

.badge-archived, .badge-revoked, .badge-failed {
    background-color: var(--color-danger-bg);
    color: var(--color-danger);
}

.table-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

@media (max-width: 992px) {
    .admin-sidebar {
        position: fixed;
        left: calc(-1 * var(--sidebar-width, 260px));
    }
    .admin-sidebar.open {
        left: 0;
    }
    .admin-topbar {
        padding: 0 1rem;
    }
    .admin-content-area {
        padding: 1.25rem;
    }
}

/* ==========================================================================
   ACS Dashboard Executive Polish & Refinements
   ========================================================================== */

/* Welcome Header */
.dash-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.dash-title {
    font-size: 1.55rem;
    font-weight: 800;
    color: var(--color-001d39);
    letter-spacing: -0.02em;
    line-height: 1.25;
}

.dash-subtitle {
    font-size: 0.88rem;
    color: var(--color-49769f);
    margin-top: 0.25rem;
}

.dash-header-actions {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.dash-date-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.85rem;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.825rem;
    font-weight: 600;
    color: var(--color-text-muted);
}

/* Stat Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.35rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1.4rem 1.5rem;
    display: flex;
    flex-direction: column;
    box-shadow: 0 2px 4px rgba(0, 29, 57, 0.04);
    position: relative;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 29, 57, 0.08);
    border-color: var(--color-7bbde8);
}

.stat-card-highlight {
    border-left: 3px solid var(--color-0a4174);
}

.stat-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.85rem;
}

.stat-label {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--color-49769f);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.stat-icon-wrap {
    width: 38px;
    height: 38px;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.icon-blue   { background-color: #E6EFF7; color: var(--color-0a4174); }
.icon-cyan   { background-color: #EBF5FB; color: #2B7EA8; }
.icon-indigo { background-color: #EDE8F7; color: #583BB5; }
.icon-green  { background-color: #E3F8EE; color: #0E9F6E; }

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-001d39);
    line-height: 1.15;
    letter-spacing: -0.02em;
}

.stat-value.text-accent {
    color: var(--color-0a4174);
}

.stat-footer {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
    padding-top: 0.75rem;
    border-top: 1px dashed var(--color-border);
    font-size: 0.775rem;
}

.stat-pill-info {
    padding: 0.15rem 0.5rem;
    background-color: var(--color-surface-hover);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-weight: 700;
    color: var(--color-0a4174);
}

.stat-meta {
    color: var(--color-text-light);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

/* Two-Column Grid */
.dash-activity-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(440px, 1fr));
    gap: 1.5rem;
}

/* Enhanced Cards */
.card-header {
    background-color: var(--color-surface);
    padding: 1.15rem 1.4rem;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header-title {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 700;
    font-size: 0.98rem;
    color: var(--color-001d39);
}

.card-title-icon {
    font-size: 1.25rem;
    color: var(--color-0a4174);
}

.card-link-action {
    display: inline-flex;
    align-items: center;
    gap: 0.2rem;
    font-size: 0.825rem;
    font-weight: 600;
    color: var(--color-0a4174);
    transition: transform 0.15s ease;
}

.card-link-action:hover {
    transform: translateX(3px);
}

/* Tables Formatting */
.data-table th {
    padding: 0.75rem 1.25rem;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-49769f);
    background-color: #F8FAFC;
    border-bottom: 1px solid var(--color-border);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.data-table td {
    padding: 0.85rem 1.25rem;
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
}

.table-user-cell {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.user-avatar-initials {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--color-bdd8e9);
    color: var(--color-001d39);
    font-size: 0.8rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.table-user-name {
    font-weight: 600;
    font-size: 0.88rem;
    color: var(--color-001d39);
    line-height: 1.25;
}

.table-user-sub {
    font-size: 0.75rem;
    color: var(--color-49769f);
}

.table-course-title {
    max-width: 170px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 0.86rem;
    color: var(--color-text-main);
    font-weight: 500;
}

.table-amount-badge {
    font-family: var(--font-mono, monospace);
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--color-001d39);
}

.table-date-cell {
    font-size: 0.78rem;
    color: var(--color-49769f);
    font-weight: 500;
}

.table-empty-state {
    text-align: center;
    padding: 2.5rem 1rem !important;
    color: var(--color-49769f);
}

.table-empty-state i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    display: inline-block;
    opacity: 0.6;
}

@media (max-width: 900px) {
    .dash-activity-grid {
        grid-template-columns: 1fr;
    }
}