/* ============================================
   Admin Layout — Sidebar, Content, Components
   ============================================ */

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

.sidebar {
    width: var(--sidebar-width);
    background: var(--color-dark);
    color: #fff;
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 50;
    transition: width var(--transition-slow);
}

.sidebar-brand {
    padding: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    border-bottom: 1px solid var(--color-dark-3);
}
.sidebar-brand svg { flex-shrink: 0; }
.sidebar-brand-text {
    font-size: var(--font-size-md);
    font-weight: 700;
    letter-spacing: -0.02em;
    white-space: nowrap;
}

.sidebar-nav {
    flex: 1;
    padding: var(--space-md) var(--space-sm);
    overflow-y: auto;
}

.sidebar-section {
    margin-bottom: var(--space-md);
}
.sidebar-section-label {
    padding: var(--space-sm) var(--space-sm);
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.35);
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 9px 12px;
    border-radius: var(--radius-md);
    color: rgba(255, 255, 255, 0.65);
    font-size: var(--font-size-sm);
    font-weight: 400;
    transition: all var(--transition-fast);
    text-decoration: none;
    margin-bottom: 2px;
}
.sidebar-link:hover {
    background: var(--color-dark-2);
    color: #fff;
    text-decoration: none;
}
.sidebar-link.active {
    background: var(--color-primary);
    color: #fff;
}
.sidebar-link svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    opacity: 0.7;
}
.sidebar-link.active svg { opacity: 1; }

.sidebar-footer {
    padding: var(--space-md);
    border-top: 1px solid var(--color-dark-3);
}
.sidebar-user {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
}
.sidebar-user:hover { background: var(--color-dark-2); }
.sidebar-user-avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: #fff;
    flex-shrink: 0;
}
.sidebar-user-info { overflow: hidden; }
.sidebar-user-name {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: #fff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.sidebar-user-email {
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.45);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg) var(--space-xl);
    background: var(--color-bg-white);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 30;
}
.page-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text);
}
.page-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: 2px;
}
.page-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.page-body {
    padding: var(--space-xl);
}

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

/* Survey list card */
.survey-card {
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: box-shadow var(--transition-fast);
}
.survey-card:hover { box-shadow: var(--shadow-md); }

.survey-card-info { flex: 1; min-width: 0; }
.survey-card-title {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 4px;
}
.survey-card-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}
.survey-card-meta span { display: flex; align-items: center; gap: 4px; }

.survey-card-actions {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

/* Search + filter bar */
.filter-bar {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
}
.filter-bar .search-input {
    flex: 1;
    min-width: 200px;
    position: relative;
}
.filter-bar .search-input input {
    padding-left: 36px;
}
.filter-bar .search-input svg {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    width: 16px;
    height: 16px;
}

/* Tab navigation */
.tabs {
    display: flex;
    border-bottom: 2px solid var(--color-border);
    margin-bottom: var(--space-lg);
    gap: var(--space-lg);
}
.tab {
    padding: var(--space-sm) 0;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    cursor: pointer;
    transition: all var(--transition-fast);
    background: none;
    border-left: none;
    border-right: none;
    border-top: none;
}
.tab:hover { color: var(--color-text); }
.tab.active { color: var(--color-primary); border-bottom-color: var(--color-primary); }

/* Slide-out panel */
.slide-panel {
    position: fixed;
    right: -400px;
    top: 0;
    bottom: 0;
    width: 400px;
    background: var(--color-bg-white);
    border-left: 1px solid var(--color-border);
    z-index: 60;
    transition: right var(--transition-slow);
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-xl);
}
.slide-panel.open { right: 0; }
.slide-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
}
.slide-panel-body {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-lg);
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}
.breadcrumb a { color: var(--color-text-secondary); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb-sep { color: var(--color-border); }

/* Login page */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
}
.login-card {
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
}
.login-logo {
    text-align: center;
    margin-bottom: var(--space-xl);
}
.login-logo h1 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text);
    margin-top: var(--space-sm);
}
.login-logo p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.login-form .form-input {
    padding: 10px 14px;
}
.login-form .btn {
    width: 100%;
    justify-content: center;
    padding: 10px;
}

.alert {
    padding: 10px 14px;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-md);
}
.alert-danger { background: var(--color-danger-bg); color: var(--color-danger); }
.alert-success { background: var(--color-success-bg); color: var(--color-success); }

/* Mobile */
.mobile-menu-toggle {
    display: none;
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 60;
    width: 40px;
    height: 40px;
    background: var(--color-dark);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    align-items: center;
    justify-content: center;
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .mobile-menu-toggle { display: flex; }
    .page-header { padding: var(--space-md); padding-left: 60px; }
    .page-body { padding: var(--space-md); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .slide-panel { width: 100%; right: -100%; }
    .filter-bar { flex-direction: column; align-items: stretch; }
    .filter-bar .search-input { min-width: unset; }
}