/* =============================================
   E-Portal Superadmin Panel Styles
   Sidebar + Data Tables + Forms
   ============================================= */

/* Admin Layout */
.admin-wrapper {
    min-height: 100vh;
    display: flex;
    background: var(--bg-light);
}

/* Sidebar */
.admin-sidebar {
    width: 260px;
    background: var(--bg-white);
    border-right: 1px solid var(--bg-dark);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: var(--z-navbar);
    transition: transform var(--transition-base);
}

.sidebar-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--bg-dark);
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.sidebar-header .sidebar-logo {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.sidebar-header .sidebar-logo svg,
.sidebar-header .sidebar-logo img {
    width: 26px;
    height: 26px;
    color: white;
    object-fit: contain;
}

.sidebar-header .sidebar-brand {
    flex: 1;
    min-width: 0;
}

.sidebar-header .sidebar-brand h3 {
    font-size: var(--font-size-sm);
    font-weight: 700;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-header .sidebar-brand span {
    font-size: 11px;
    color: var(--text-muted);
}

/* Sidebar Navigation */
.sidebar-nav {
    flex: 1;
    padding: var(--space-md) 0;
    overflow-y: auto;
}

.sidebar-nav-group {
    margin-bottom: var(--space-md);
}

.sidebar-nav-label {
    padding: var(--space-sm) var(--space-lg);
    font-family: var(--font-heading);
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.sidebar-nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: 12px var(--space-lg);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    position: relative;
}

.sidebar-nav-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background: var(--primary);
    border-radius: 0 2px 2px 0;
    transition: height var(--transition-fast);
}

.sidebar-nav-item:hover {
    background: var(--bg-light);
    color: var(--primary);
}

.sidebar-nav-item.active {
    color: var(--primary);
    background: rgba(21, 101, 192, 0.06);
    font-weight: 600;
}

.sidebar-nav-item.active::before {
    height: 24px;
}

.sidebar-nav-item svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--bg-dark);
}

.sidebar-footer .sidebar-user {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.sidebar-footer .sidebar-user-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: var(--font-size-xs);
    flex-shrink: 0;
}

.sidebar-footer .sidebar-user-info {
    flex: 1;
    min-width: 0;
}

.sidebar-footer .sidebar-user-info .name {
    font-size: var(--font-size-sm);
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-footer .sidebar-user-info .role {
    font-size: 11px;
    color: var(--text-muted);
}

/* Admin Main Content */
.admin-main {
    flex: 1;
    margin-left: 260px;
    transition: margin-left var(--transition-base);
}

/* Admin Top Bar */
.admin-topbar {
    background: var(--bg-white);
    padding: var(--space-md) var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: calc(var(--z-navbar) - 1);
}

.admin-topbar-left {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.admin-topbar .menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: var(--bg-light);
    border: none;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.admin-topbar .menu-toggle svg {
    width: 20px;
    height: 20px;
}

.admin-page-title {
    font-family: var(--font-heading);
    font-size: var(--font-size-lg);
    font-weight: 700;
}

.admin-topbar-right {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.admin-topbar-right .back-to-portal {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--bg-dark);
    background: var(--bg-white);
    transition: all var(--transition-fast);
}

.admin-topbar-right .back-to-portal:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.admin-topbar-right .back-to-portal svg {
    width: 16px;
    height: 16px;
}

/* Admin Content Area */
.admin-content {
    padding: var(--space-xl);
}

/* Admin Card (for sections) */
.admin-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-xl);
}

.admin-card-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.admin-card-header h3 {
    font-size: var(--font-size-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.admin-card-header h3 svg {
    width: 22px;
    height: 22px;
    color: var(--primary);
}

.admin-subtitle {
    margin-top: 6px;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.admin-card-body {
    padding: var(--space-lg);
}

.admin-card-footer {
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-sm);
}

/* Admin Stats */
.admin-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.stat-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon svg {
    width: 24px;
    height: 24px;
}

.stat-info h4 {
    font-family: var(--font-heading);
    font-size: var(--font-size-2xl);
    font-weight: 800;
    line-height: 1;
    margin-bottom: 4px;
}

.stat-info p {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* Form in Modal/Panel */
.admin-form-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: var(--z-modal);
    padding: var(--space-lg);
    overflow-y: auto;
}

.admin-form-modal.show {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 60px;
    animation: fadeIn 0.3s ease;
}

.admin-form-panel {
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 540px;
    box-shadow: var(--shadow-xl);
    animation: scaleIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.admin-form-panel .panel-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.admin-form-panel .panel-header h3 {
    font-size: var(--font-size-lg);
}

.admin-form-panel .panel-close {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.admin-form-panel .panel-close:hover {
    background: var(--danger-light);
    color: var(--danger);
}

.admin-form-panel .panel-close svg {
    width: 18px;
    height: 18px;
}

.admin-form-panel .panel-body {
    padding: var(--space-lg);
}

.admin-form-panel .panel-footer {
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--bg-dark);
    display: flex;
    gap: var(--space-sm);
    justify-content: flex-end;
}

/* Toolbar */
.admin-toolbar {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.admin-toolbar .search-box {
    min-width: 250px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-md);
}

.student-photo-sm {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-full);
    object-fit: cover;
    flex-shrink: 0;
}

.student-photo-preview {
    width: 96px;
    height: 120px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    border: 1px solid var(--bg-dark);
    background: var(--bg-light);
}

/* Students */
.students-card {
    overflow: hidden;
}

.student-hero {
    padding: 28px;
    background:
        radial-gradient(circle at 92% 12%, rgba(21, 101, 192, 0.13), transparent 28%),
        linear-gradient(135deg, #ffffff 0%, #f8fbff 52%, #eef5ff 100%);
    border-bottom: 1px solid var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
}

.student-hero-main {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    min-width: 0;
}

.student-hero-icon {
    width: 64px;
    height: 64px;
    border-radius: 22px;
    background: linear-gradient(135deg, #1D4ED8 0%, #0F766E 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 14px 35px rgba(37, 99, 235, 0.28);
    flex-shrink: 0;
}

.student-hero-icon svg {
    width: 30px;
    height: 30px;
}

.student-hero h3 {
    font-family: var(--font-heading);
    font-size: 26px;
    line-height: 1.1;
    margin-bottom: 8px;
}

.student-hero p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: 12px;
}

.active-year-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: var(--radius-full);
    background: rgba(16, 185, 129, 0.1);
    color: #047857;
    font-size: var(--font-size-xs);
    font-weight: 700;
}

.active-year-pill svg {
    width: 15px;
    height: 15px;
}

.student-hero-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-shrink: 0;
}

.student-toolbar {
    padding: 18px 28px;
    background: var(--bg-white);
    border-bottom: 1px solid var(--bg-dark);
    display: grid;
    grid-template-columns: 240px minmax(260px, 420px) 1fr;
    gap: var(--space-md);
    align-items: end;
}

.student-filter label {
    display: block;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.7px;
    margin-bottom: 7px;
}

.student-year-select {
    height: 44px;
    padding: 10px 14px;
    font-size: var(--font-size-sm);
}

.students-toolbar-inline {
    margin-left: auto;
    justify-content: flex-end;
}

.students-toolbar-inline .student-year-select {
    width: 170px;
    flex: 0 0 170px;
}

.students-toolbar-inline .search-box {
    width: 340px;
    min-width: 280px;
    flex: 0 1 340px;
}

.student-search {
    width: 100%;
}

.student-search input {
    height: 44px;
}

.student-empty {
    min-height: 330px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 44px 20px 56px;
}

.student-empty-illustration {
    width: 118px;
    height: 118px;
    border-radius: 34px;
    background: linear-gradient(135deg, #f8fafc 0%, #e0f2fe 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    box-shadow: inset 0 0 0 1px rgba(148, 163, 184, 0.2);
}

.student-empty-illustration svg {
    width: 100px;
    height: 100px;
}

.student-empty h3 {
    font-family: var(--font-heading);
    font-size: 22px;
    margin-bottom: 8px;
}

.student-empty p {
    max-width: 520px;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.7;
    margin-bottom: 20px;
}

.student-empty-actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* User Management Tabs */
.user-tabs-shell {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.user-tabs-card {
    overflow: hidden;
}

.user-tabs-hero {
    padding: 24px 28px;
    background:
        radial-gradient(circle at 92% 12%, rgba(21, 101, 192, 0.12), transparent 28%),
        linear-gradient(135deg, #ffffff 0%, #f8fbff 54%, #eef5ff 100%);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
}

.user-tabs-hero-main {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    min-width: 0;
}

.user-tabs-hero-icon {
    width: 58px;
    height: 58px;
    border-radius: 18px;
    background: linear-gradient(135deg, #1D4ED8 0%, #0F766E 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 14px 35px rgba(37, 99, 235, 0.24);
    flex-shrink: 0;
}

.user-tabs-hero-icon svg {
    width: 28px;
    height: 28px;
}

.user-tabs-hero h3 {
    font-family: var(--font-heading);
    font-size: 24px;
    line-height: 1.1;
    margin-bottom: 8px;
}

.user-tabs-hero p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.user-management-tabs {
    margin: 0;
    border-bottom: 0;
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid var(--bg-dark);
    border-radius: var(--radius-lg);
    padding: 6px;
    gap: 6px;
    flex-shrink: 0;
}

.user-management-tabs .admin-tab {
    min-width: 120px;
    margin: 0;
    border: 0;
    border-radius: var(--radius-md);
    padding: 10px 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.user-management-tabs .admin-tab svg {
    width: 17px;
    height: 17px;
}

.user-management-tabs .admin-tab.active {
    background: var(--primary);
    color: white;
    box-shadow: 0 10px 24px rgba(21, 101, 192, 0.2);
}

.account-card {
    overflow: hidden;
}

.account-toolbar-inline {
    margin-left: auto;
    justify-content: flex-end;
}

.account-toolbar-inline .search-box {
    width: 320px;
    min-width: 260px;
    flex: 0 1 320px;
}

.account-toolbar-inline .student-year-select {
    width: 170px;
    flex: 0 0 170px;
}

.account-summary {
    padding: 13px 22px;
    border-bottom: 1px solid var(--bg-dark);
    background: #fbfdff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    flex-wrap: wrap;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.account-summary strong {
    color: var(--text-primary);
}

.account-table code,
.account-credential code,
.account-password {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 5px 9px;
    border-radius: var(--radius-sm);
    background: var(--bg-light);
    color: var(--text-primary);
    font-family: Consolas, Monaco, monospace;
    font-size: 12px;
    font-weight: 700;
}

.account-password {
    background: rgba(16, 185, 129, 0.1);
    color: #047857;
}

.account-muted {
    margin-top: 5px;
    color: var(--text-muted);
    font-size: 11px;
}

.account-username-editor {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    border: 2px solid var(--bg-dark);
    border-radius: var(--radius-md);
    background: var(--bg-white);
    overflow: hidden;
    transition: all var(--transition-base);
}

.account-username-editor:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(21, 101, 192, 0.1);
}

.account-username-editor .form-input {
    border: 0;
    border-radius: 0;
    box-shadow: none;
}

.account-username-editor span {
    padding: 0 14px;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 700;
    white-space: nowrap;
}

.account-help {
    margin-top: 8px;
    color: var(--text-muted);
    font-size: var(--font-size-xs);
}

/* References */
.ref-card {
    overflow: hidden;
}

.ref-hero {
    padding: 28px;
    background:
        radial-gradient(circle at 92% 12%, rgba(15, 118, 110, 0.13), transparent 28%),
        linear-gradient(135deg, #ffffff 0%, #f8fbff 54%, #eef7f4 100%);
    border-bottom: 1px solid var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
}

.ref-hero-main {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    min-width: 0;
}

.ref-hero-icon {
    width: 64px;
    height: 64px;
    border-radius: 20px;
    background: linear-gradient(135deg, #1D4ED8 0%, #0F766E 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 14px 35px rgba(15, 118, 110, 0.22);
    flex-shrink: 0;
}

.ref-hero-icon svg {
    width: 30px;
    height: 30px;
}

.ref-hero h3 {
    font-family: var(--font-heading);
    font-size: 26px;
    line-height: 1.1;
    margin-bottom: 8px;
}

.ref-hero p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
    margin-bottom: 12px;
    max-width: 680px;
}

.ref-hero-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-shrink: 0;
}

.ref-toolbar {
    padding: 18px 28px;
    background: var(--bg-white);
    border-bottom: 1px solid var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.ref-category-group {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.ref-category-btn {
    min-height: 42px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    border-radius: var(--radius-md);
    border: 1px solid var(--bg-dark);
    background: var(--bg-white);
    color: var(--text-secondary);
    font-family: var(--font-heading);
    font-size: var(--font-size-sm);
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.ref-category-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(21, 101, 192, 0.04);
}

.ref-category-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    box-shadow: 0 10px 24px rgba(21, 101, 192, 0.2);
}

.ref-category-btn small {
    min-width: 24px;
    height: 24px;
    padding: 0 8px;
    border-radius: var(--radius-full);
    background: var(--bg-light);
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 800;
}

.ref-category-btn.active small {
    background: rgba(255, 255, 255, 0.22);
    color: white;
}

.ref-toolbar-right {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-left: auto;
}

.ref-search {
    width: 330px;
    max-width: 42vw;
}

.ref-count {
    height: 42px;
    padding: 0 13px;
    border-radius: var(--radius-md);
    background: var(--bg-light);
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    font-size: var(--font-size-xs);
    font-weight: 800;
    white-space: nowrap;
}

.ref-context {
    padding: 14px 28px;
    border-bottom: 1px solid var(--bg-dark);
    background: #fbfdff;
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.ref-context strong {
    font-family: var(--font-heading);
    color: var(--text-primary);
}

.ref-context span {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.reference-table tbody td {
    padding-top: 16px;
    padding-bottom: 16px;
}

.reference-name {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    min-width: 230px;
}

.reference-number {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-md);
    background: rgba(21, 101, 192, 0.08);
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: var(--font-size-xs);
    font-weight: 800;
    flex-shrink: 0;
}

.reference-name strong {
    display: block;
    font-size: var(--font-size-sm);
    margin-bottom: 3px;
}

.reference-name small {
    color: var(--text-muted);
    font-size: 11px;
}

.reference-note {
    color: var(--text-secondary);
    line-height: 1.5;
}

.reference-empty {
    min-height: 310px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 42px 20px 52px;
}

.reference-empty-illustration {
    width: 104px;
    height: 104px;
    border-radius: 30px;
    background: linear-gradient(135deg, #f8fafc 0%, #dcfce7 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    box-shadow: inset 0 0 0 1px rgba(148, 163, 184, 0.2);
}

.reference-empty-illustration svg {
    width: 58px;
    height: 58px;
    color: #0F766E;
}

.reference-empty h3 {
    font-family: var(--font-heading);
    font-size: 22px;
    margin-bottom: 8px;
}

.reference-empty p {
    max-width: 520px;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.7;
    margin-bottom: 20px;
}

/* Mobile Overlay */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: calc(var(--z-navbar) - 1);
}

.sidebar-overlay.show {
    display: block;
    animation: fadeIn 0.3s ease;
}

/* Tabs */
.admin-tabs {
    display: flex;
    border-bottom: 2px solid var(--bg-dark);
    margin-bottom: var(--space-lg);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.admin-tab {
    padding: 12px 20px;
    font-family: var(--font-heading);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    border: none;
    background: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

.admin-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    font-weight: 600;
}

/* Settings Form */
.settings-section {
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid var(--bg-dark);
}

.settings-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.settings-section h4 {
    font-family: var(--font-heading);
    font-size: var(--font-size-base);
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.settings-section p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

/* Icon Preview */
.icon-preview {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-lg);
    background: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--bg-dark);
    margin-bottom: var(--space-md);
    overflow: hidden;
}

.icon-preview img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.icon-preview svg {
    width: 40px;
    height: 40px;
    color: var(--text-muted);
}

.kop-preview {
    width: 100%;
    min-height: 118px;
    border-radius: var(--radius-lg);
    background: var(--bg-light);
    border: 2px dashed var(--bg-dark);
    margin-bottom: var(--space-md);
    padding: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.kop-preview img {
    width: 100%;
    max-height: 150px;
    object-fit: contain;
}

.kop-preview span {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 992px) {
    .admin-sidebar {
        transform: translateX(-100%);
    }

    .admin-sidebar.show {
        transform: translateX(0);
    }

    .admin-main {
        margin-left: 0;
    }

    .admin-topbar .menu-toggle {
        display: flex;
    }
}

@media (max-width: 768px) {
    .admin-content {
        padding: var(--space-md);
    }

    .admin-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .admin-card-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .admin-toolbar {
        width: 100%;
    }

    .admin-toolbar .search-box {
        min-width: auto;
        flex: 1;
    }

    .students-toolbar-inline .student-year-select,
    .students-toolbar-inline .search-box {
        width: 100%;
        min-width: auto;
        flex: 1 1 100%;
    }

    .account-toolbar-inline .student-year-select,
    .account-toolbar-inline .search-box {
        width: 100%;
        min-width: auto;
        flex: 1 1 100%;
    }

    .student-hero {
        align-items: flex-start;
        flex-direction: column;
        padding: 22px;
    }

    .student-hero-main {
        align-items: flex-start;
    }

    .student-hero-actions {
        width: 100%;
        flex-wrap: wrap;
    }

    .user-tabs-hero {
        align-items: flex-start;
        flex-direction: column;
        padding: 22px;
    }

    .user-tabs-hero-main {
        align-items: flex-start;
    }

    .user-management-tabs {
        width: 100%;
    }

    .user-management-tabs .admin-tab {
        flex: 1;
        min-width: 0;
    }

    .ref-hero {
        align-items: flex-start;
        flex-direction: column;
        padding: 22px;
    }

    .ref-hero-main {
        align-items: flex-start;
    }

    .ref-hero-actions,
    .ref-hero-actions .btn {
        width: 100%;
    }

    .ref-toolbar {
        padding: 16px 22px;
        align-items: stretch;
    }

    .ref-category-group,
    .ref-toolbar-right,
    .ref-search {
        width: 100%;
        max-width: none;
    }

    .ref-toolbar-right {
        margin-left: 0;
    }

    .ref-count {
        flex-shrink: 0;
    }

    .ref-context {
        padding: 14px 22px;
    }

    .student-toolbar {
        grid-template-columns: 1fr;
        padding: 16px 22px;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .admin-form-modal.show {
        padding: var(--space-md);
        padding-top: var(--space-lg);
        align-items: flex-start;
    }

    .admin-topbar {
        padding: var(--space-md);
    }
}

@media (max-width: 480px) {
    .admin-stats {
        grid-template-columns: 1fr;
    }

    .stat-card {
        padding: var(--space-md);
    }

    .student-hero-main {
        flex-direction: column;
        gap: var(--space-md);
    }

    .user-tabs-hero-main {
        flex-direction: column;
        gap: var(--space-md);
    }

    .ref-hero-main {
        flex-direction: column;
        gap: var(--space-md);
    }

    .ref-category-btn {
        flex: 1 1 100%;
        justify-content: space-between;
    }

    .student-hero-actions .btn {
        width: 100%;
    }

    .student-empty {
        min-height: 280px;
        padding: 32px 12px 44px;
    }

    .reference-empty {
        min-height: 280px;
        padding: 32px 12px 44px;
    }
}