/**
 * @fileoverview Main Stylesheet
 * @description Core styles for the Worship Planner application.
 *              Uses CSS custom properties from themes.css.
 */

/* === Reset & Base === */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    color: var(--ct-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--ct-primary-hover);
}

/* === Glass Effect - Premium Glassmorphism === */
.glass {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

/* === Loading Screen === */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    z-index: 9999;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--border-color);
    border-top-color: var(--ct-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* === Login Page - Premium Gradient === */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background: linear-gradient(135deg, #0ea5e9 0%, #6366f1 50%, #8b5cf6 100%);
    background-size: 200% 200%;
    animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {

    0%,
    100% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }
}

.login-card {
    width: 100%;
    max-width: 420px;
    padding: 2.5rem;
    border-radius: 24px;
    box-shadow: var(--shadow-xl);
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-logo {
    font-size: 4rem;
    margin-bottom: 0.5rem;
}

.login-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.login-header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Login Toggle */
.login-toggle {
    display: flex;
    background: var(--bg-tertiary);
    border-radius: 12px;
    padding: 4px;
    margin-bottom: 1.5rem;
}

.toggle-btn {
    flex: 1;
    padding: 0.75rem;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.toggle-btn.active {
    background: var(--ct-primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

/* Form Styles */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--input-bg);
    border: 2px solid var(--input-border);
    border-radius: 12px;
    font-size: 1rem;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.form-group input::placeholder {
    color: var(--input-placeholder);
}

.form-group input:focus {
    outline: none;
    border-color: var(--ct-primary);
    box-shadow: 0 0 0 4px rgba(var(--ct-primary-rgb), 0.15);
}

/* Color Picker */
.form-group input[type="color"] {
    padding: 0.5rem;
    height: 50px;
    cursor: pointer;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

.form-group input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
    border-radius: 8px;
}

.form-group input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 8px;
}

.form-group input[type="color"]::-moz-color-swatch {
    border: none;
    border-radius: 8px;
}

/* Custom Color Picker Component */
.color-picker-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.color-presets {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 0.5rem;
}

.color-preset {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 8px;
    border: 3px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: 32px;
}

.color-preset:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.color-preset.selected {
    border-color: var(--text-primary);
    box-shadow: 0 0 0 2px var(--bg-primary), 0 0 0 4px var(--text-primary);
}

.custom-color-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border-color);
}

.custom-color-row label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    white-space: nowrap;
    margin: 0;
}

.custom-color-row input[type="color"] {
    flex: 1;
    height: 36px;
    min-width: 60px;
}

.selected-color-preview {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 2px solid var(--border-color-strong);
    flex-shrink: 0;
}

/* Avatar Components */
.avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    overflow: hidden;
    background: linear-gradient(135deg, var(--ct-primary), var(--ct-primary-dark));
    color: white;
    font-weight: 600;
    flex-shrink: 0;
}

.avatar-small {
    width: 32px;
    height: 32px;
    font-size: 0.75rem;
}

.avatar-medium {
    width: 40px;
    height: 40px;
    font-size: 0.875rem;
}

.avatar-large {
    width: 56px;
    height: 56px;
    font-size: 1.1rem;
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-fallback {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    text-transform: uppercase;
}

/* Buttons - Premium Design */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: 12px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, var(--ct-primary) 0%, var(--ct-primary-dark) 100%);
    color: white;
    box-shadow: 0 4px 14px rgba(14, 165, 233, 0.3);
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--ct-primary-hover) 0%, var(--ct-primary-dark) 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.4);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(14, 165, 233, 0.3);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-secondary);
    border-color: var(--ct-primary);
    color: var(--ct-primary);
}

.btn-danger {
    background: var(--ct-error);
    color: white;
}

.btn-danger:hover:not(:disabled) {
    background: #dc2626;
}

.btn-block {
    width: 100%;
}

.btn-icon {
    padding: 0.625rem;
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-icon:hover {
    background: var(--border-color-strong);
}

.btn-icon svg {
    width: 20px;
    height: 20px;
}

/* Error Message */
.error-message {
    margin-top: 1rem;
    padding: 0.875rem;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 8px;
    color: var(--ct-error);
    font-size: 0.875rem;
    text-align: center;
}

/* === Main App Layout === */
.view {
    min-height: 100vh;
}

#view-main {
    display: flex;
}

/* === Sidebar - Premium Dark === */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 260px;
    height: 100vh;
    background: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: transform 0.3s ease;
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.15);
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-logo {
    font-size: 2rem;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.sidebar-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--sidebar-text);
    letter-spacing: -0.02em;
}

.sidebar-nav {
    flex: 1;
    padding: 1rem 0;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1.5rem;
    margin: 0.25rem 0.75rem;
    color: var(--sidebar-text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-normal);
    border-radius: 10px;
    position: relative;
}

.nav-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%) scaleY(0);
    width: 3px;
    height: 60%;
    background: var(--ct-primary);
    border-radius: 0 3px 3px 0;
    transition: transform var(--transition-normal);
}

.nav-item:hover {
    background: var(--sidebar-hover);
    color: var(--sidebar-text);
}

.nav-item.active {
    color: white;
    background: linear-gradient(135deg, var(--ct-primary) 0%, var(--ct-primary-dark) 100%);
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
}

.nav-item.active::before {
    transform: translateY(-50%) scaleY(0);
}

.nav-icon {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
    transition: transform var(--transition-fast);
}

.nav-item:hover .nav-icon {
    transform: scale(1.1);
}

.sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.user-avatar {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--ct-primary), var(--ct-primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    color: white;
    overflow: hidden;
    flex-shrink: 0;
}

.user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.user-avatar .avatar-fallback {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

.user-details {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--sidebar-text);
}

.user-role {
    font-size: 0.75rem;
    color: var(--sidebar-text-muted);
}

.btn-logout {
    padding: 0.5rem;
    background: transparent;
    border: none;
    color: var(--sidebar-text-muted);
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.btn-logout:hover {
    background: rgba(239, 68, 68, 0.2);
    color: var(--ct-error);
}

.btn-logout svg {
    width: 20px;
    height: 20px;
}

/* === Mobile Header === */
.mobile-header {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: var(--sidebar-bg);
    padding: 0 1rem;
    align-items: center;
    justify-content: space-between;
    z-index: 99;
}

.btn-menu,
.btn-logout-mobile {
    padding: 0.5rem;
    background: transparent;
    border: none;
    color: var(--sidebar-text);
    cursor: pointer;
    border-radius: 8px;
}

.btn-menu svg,
.btn-logout-mobile svg {
    width: 24px;
    height: 24px;
}

.mobile-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--sidebar-text);
}

/* === Main Content === */
.main-content {
    margin-left: 260px;
    min-height: 100vh;
    padding: 2rem;
    flex: 1;
    width: calc(100% - 260px);
}

.page {
    display: none;
}

.page.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Page Header - Premium */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--ct-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Month Selector - Enhanced */
.month-selector {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-secondary);
    padding: 0.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.current-month {
    font-size: 1.125rem;
    font-weight: 600;
    min-width: 160px;
    text-align: center;
    color: var(--text-primary);
}

/* === Dashboard === */
.dashboard-content {
    display: block;
    width: 100%;
}

/* Filter Bar - Premium Card */
.filter-bar {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
}

.filter-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    white-space: nowrap;
}

.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.filter-btn {
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border: 2px solid transparent;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.filter-btn:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

.filter-btn.active {
    background: var(--ct-primary);
    color: white;
    border-color: var(--ct-primary);
}

/* Group color indicator on filter buttons */
.filter-btn[data-group-id]:not([data-group-id="all"])::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--group-color, var(--ct-primary));
    border-radius: 8px 0 0 8px;
}

.filter-btn[data-group-id]:not([data-group-id="all"]) {
    padding-left: 1.25rem;
}

@media (max-width: 768px) {
    .filter-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .filter-buttons {
        width: 100%;
    }

    .filter-btn {
        flex: 1;
        min-width: 100px;
        text-align: center;
    }
}

/* Data Timestamp - shows when data was last fetched */
.data-timestamp {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: auto;
    padding: 0.375rem 0.75rem;
    background: var(--bg-tertiary);
    border-radius: 6px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.data-timestamp svg {
    flex-shrink: 0;
    opacity: 0.7;
}

/* Container for timestamp and refresh button */
.data-timestamp-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: auto;
}

/* Refresh button */
.btn-refresh {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.375rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-refresh:hover {
    background: var(--ct-primary);
    border-color: var(--ct-primary);
    color: white;
    transform: rotate(45deg);
}

.btn-refresh:active {
    transform: rotate(180deg);
}

.btn-refresh svg {
    flex-shrink: 0;
}

@media (max-width: 768px) {
    .data-timestamp-container {
        width: 100%;
        margin-left: 0;
        justify-content: center;
    }

    .data-timestamp {
        width: auto;
        margin-left: 0;
        justify-content: center;
    }
}

.empty-state {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    text-align: center;
}

.empty-icon {
    width: 80px;
    height: 80px;
    color: var(--text-tertiary);
    margin-bottom: 1.5rem;
}

.empty-state h2 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    max-width: 400px;
}

/* Group Card */
.group-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
}

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

.group-card-header {
    padding: 1.25rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.group-card-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.group-color {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.group-card-title h3 {
    font-size: 1rem;
    font-weight: 600;
}

.group-card-actions {
    display: flex;
    gap: 0.25rem;
}

.group-card-actions button {
    padding: 0.375rem;
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.group-card-actions button:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.group-card-actions button svg {
    width: 18px;
    height: 18px;
}

.group-card-body {
    padding: 1rem 1.25rem;
}

.group-members-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.member-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.625rem 0.75rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
}

.member-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.member-avatar {
    width: 32px;
    height: 32px;
    background: var(--ct-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
}

.member-name {
    font-size: 0.875rem;
    font-weight: 500;
}

/* Availability Badge */
.badge {
    padding: 0.25rem 0.625rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-available {
    background: rgba(16, 185, 129, 0.15);
    color: var(--badge-available);
}

.badge-unavailable {
    background: rgba(239, 68, 68, 0.15);
    color: var(--badge-unavailable);
}

.badge-partial {
    background: rgba(245, 158, 11, 0.15);
    color: var(--badge-partial);
}

/* === Groups Page === */
.groups-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    width: 100%;
}

.group-card-footer {
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.group-member-count {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* === Admin Page === */
.admin-content {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
    gap: 1.5rem;
}

.admin-section {
    padding: 1.5rem;
    border-radius: 16px;
}

.admin-section h2 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.section-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
}

.admin-users-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
    max-height: 300px;
    overflow-y: auto;
}

.admin-user-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
}

.admin-user-info {
    display: flex;
    flex-direction: column;
}

.admin-user-name {
    font-size: 0.875rem;
    font-weight: 500;
}

.admin-user-email {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.setting-item {
    margin-bottom: 1.25rem;
}

.setting-item label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.setting-item input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--input-bg);
    border: 2px solid var(--input-border);
    border-radius: 10px;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.setting-item input:focus {
    outline: none;
    border-color: var(--ct-primary);
}

.setting-item small {
    display: block;
    margin-top: 0.375rem;
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

.admin-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 1rem;
}

.stat-item {
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: 10px;
    text-align: center;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--ct-primary);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.admin-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

/* === Toast Notifications === */
.toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    z-index: 9999;
}

.toast {
    padding: 1rem 1.25rem;
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideIn 0.3s ease;
    max-width: 350px;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.toast-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.toast-success .toast-icon {
    color: var(--ct-success);
}

.toast-error .toast-icon {
    color: var(--ct-error);
}

.toast-warning .toast-icon {
    color: var(--ct-warning);
}

.toast-info .toast-icon {
    color: var(--ct-info);
}

.toast-message {
    flex: 1;
    font-size: 0.875rem;
}

.toast-close {
    padding: 0.25rem;
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    border-radius: 4px;
}

.toast-close:hover {
    color: var(--text-primary);
}

/* === Modal === */
.modal-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 2rem;
    border-radius: 20px;
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close {
    padding: 0.375rem;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.modal-close svg {
    width: 20px;
    height: 20px;
}

.modal-body {
    margin-bottom: 1.5rem;
}

.modal-footer {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
}

/* === Responsive Design === */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .mobile-header {
        display: flex;
    }

    .main-content {
        margin-left: 0;
        padding: 80px 1rem 1rem;
    }

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

    .dashboard-content,
    .groups-list,
    .admin-content {
        grid-template-columns: 1fr;
    }

    .admin-stats {
        grid-template-columns: 1fr 1fr;
    }

    .toast-container {
        left: 1rem;
        right: 1rem;
        bottom: 1rem;
    }

    .toast {
        max-width: none;
    }
}

@media (max-width: 480px) {
    .login-card {
        padding: 1.5rem;
    }

    .admin-stats {
        grid-template-columns: 1fr;
    }

    .modal-content {
        padding: 1.25rem;
        margin: 0.5rem;
    }
}

/* === Matrix View (Desktop) === */
.matrix-view {
    display: block;
    overflow: hidden;
    width: 100%;
}

.matrix-scroll-container {
    overflow-x: auto;
    margin-bottom: 1rem;
    width: 100%;
}

.matrix-table {
    width: 100%;
    border-collapse: collapse;
    table-layout: auto;
}

.matrix-header-cell {
    padding: 1rem 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    text-align: center;
    vertical-align: top;
    min-width: 80px;
}

.matrix-person-header {
    min-width: 200px;
    text-align: left;
    position: sticky;
    left: 0;
    z-index: 2;
    background: var(--bg-tertiary);
}

.matrix-event-date {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--ct-primary);
    text-transform: uppercase;
}

.matrix-event-day {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0.25rem 0;
}

.matrix-event-title {
    font-size: 0.7rem;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.matrix-row:hover {
    background: var(--bg-tertiary);
}

.matrix-person {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.matrix-person-info {
    display: flex;
    flex-direction: column;
}

.matrix-person-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
}

.matrix-person-groups {
    font-size: 0.7rem;
    color: var(--text-tertiary);
}

/* Group Header Row - Premium Styling */
.matrix-group-header-row {
    background: transparent;
}

.matrix-group-header {
    padding: 0.875rem 0.75rem;
    padding-left: 1.25rem;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border: none;
    border-bottom: 1px solid var(--border-color);
    border-left: 4px solid var(--group-color, var(--ct-primary));
    font-weight: 600;
    position: relative;
}



.matrix-group-color-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 0.75rem;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
    vertical-align: middle;
}

.matrix-group-name {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    vertical-align: middle;
}

.matrix-group-count {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-tertiary);
    margin-left: 0.625rem;
    background: var(--bg-tertiary);
    padding: 0.25rem 0.625rem;
    border-radius: 12px;
    vertical-align: middle;
}

/* Member Rows with Group Color Indicator */
.matrix-row {
    position: relative;
}

.matrix-person-cell {
    padding: 0.625rem 0.75rem;
    padding-left: 1rem;
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--group-color, var(--ct-primary));
    position: sticky;
    left: 0;
    background: var(--card-bg);
    z-index: 1;
}

.matrix-cell {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: background-color 0.2s ease, box-shadow 0.2s ease;
    position: relative;
}

.matrix-cell:hover {
    box-shadow: inset 0 0 0 2px var(--ct-primary);
    z-index: 5;
}

.matrix-cell-available {
    background: rgba(16, 185, 129, 0.15);
}

.matrix-cell-unavailable {
    background: rgba(239, 68, 68, 0.15);
}

.matrix-cell-partial {
    background: rgba(245, 158, 11, 0.15);
}

.matrix-status-icon {
    font-size: 1rem;
    font-weight: bold;
}

.matrix-cell-available .matrix-status-icon {
    color: var(--badge-available);
}

.matrix-cell-unavailable .matrix-status-icon {
    color: var(--badge-unavailable);
}

.matrix-cell-partial .matrix-status-icon {
    color: var(--badge-partial);
}

.matrix-cell-unknown {
    background: rgba(234, 179, 8, 0.2);
}

.matrix-cell-unknown .matrix-status-icon {
    color: #eab308;
}

.matrix-legend {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
    margin-bottom: 1rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.legend-icon {
    font-weight: bold;
}

.legend-icon.available {
    color: var(--badge-available);
}

.legend-icon.partial {
    color: var(--badge-partial);
}

.legend-icon.unavailable {
    color: var(--badge-unavailable);
}

.legend-icon.unknown {
    color: #eab308;
}

/* === Card View (Mobile) - Hidden on Desktop === */
.event-cards {
    display: none;
    flex-direction: column;
    gap: 1rem;
}

.event-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    overflow: hidden;
}

.event-card-header {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.event-card-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 50px;
    padding: 0.5rem;
    background: var(--ct-primary);
    border-radius: 10px;
    color: white;
}

.event-day-name {
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
}

.event-day-number {
    font-size: 1rem;
    font-weight: 700;
}

.event-card-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.event-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.event-time {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.event-card-summary {
    display: flex;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
}

.summary-badge {
    padding: 0.35rem 0.75rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
}

.summary-badge.available {
    background: rgba(16, 185, 129, 0.15);
    color: var(--badge-available);
}

.summary-badge.partial {
    background: rgba(245, 158, 11, 0.15);
    color: var(--badge-partial);
}

.summary-badge.unavailable {
    background: rgba(239, 68, 68, 0.15);
    color: var(--badge-unavailable);
}

.event-card-members {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 0.5rem;
    padding: 1rem;
}

.card-member {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    font-size: 0.8rem;
}

.card-member-available {
    background: rgba(16, 185, 129, 0.1);
}

.card-member-unavailable {
    background: rgba(239, 68, 68, 0.1);
}

.card-member-partial {
    background: rgba(245, 158, 11, 0.1);
}

.card-member-icon {
    font-weight: bold;
}

.card-member-available .card-member-icon {
    color: var(--badge-available);
}

.card-member-unavailable .card-member-icon {
    color: var(--badge-unavailable);
}

.card-member-partial .card-member-icon {
    color: var(--badge-partial);
}

.card-member-unknown {
    background: rgba(234, 179, 8, 0.15);
}

.card-member-unknown .card-member-icon {
    color: #eab308;
}

.card-member-name {
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Loading Indicator */
.loading-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
    font-size: 1rem;
}

/* === Responsive: Mobile Card View === */
@media (max-width: 900px) {
    .matrix-view {
        display: none;
    }

    .event-cards {
        display: flex;
    }

    .dashboard-content {
        display: block;
    }
}

/* Settings Subheading for Admin Panel */
.settings-subheading {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.settings-subheading:first-of-type {
    margin-top: 0;
}

/* Groups Info Bar */
.groups-info-bar {
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
}

.groups-info-bar .data-timestamp-container {
    justify-content: flex-start;
    margin-left: 0;
}

@media (max-width: 768px) {
    .groups-info-bar .data-timestamp-container {
        justify-content: center;
    }
}

/* === Drag and Drop for Members === */
.member-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 0.75rem;
    background: var(--bg-tertiary);
    border-radius: 10px;
    margin-bottom: 0.5rem;
    transition: all var(--transition-fast);
    cursor: default;
    border: 2px solid transparent;
}

.member-item:hover {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

.member-item .member-info {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    flex: 1;
    min-width: 0;
}

.member-item .member-name {
    font-size: 0.9rem;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Drag Handle */
.drag-handle {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.25rem;
    color: var(--text-tertiary);
    cursor: grab;
    transition: all var(--transition-fast);
    border-radius: 4px;
    flex-shrink: 0;
}

.drag-handle:hover {
    color: var(--ct-primary);
    background: rgba(14, 165, 233, 0.1);
}

.drag-handle:active {
    cursor: grabbing;
}

/* Dragging State */
.member-item.dragging {
    opacity: 0.5;
    border-color: var(--ct-primary);
    background: var(--bg-secondary);
}

/* Drop Target State */
.member-item.drag-over {
    border-color: var(--ct-primary);
    background: rgba(14, 165, 233, 0.1);
}

/* Remove Member Button */
.btn-remove-member {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.375rem;
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    border-radius: 6px;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.btn-remove-member:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--ct-error);
}

/* Group Members List */
.group-members-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: 0.5rem 0;
}

/* === Icon Picker === */
.icon-picker-container {
    margin-top: 0.5rem;
}

.icon-presets {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 0.5rem;
}

.icon-preset {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 2px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 1.1rem;
}

.icon-preset:hover {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    transform: scale(1.1);
}

.icon-preset.selected {
    border-color: var(--ct-primary);
    background: rgba(14, 165, 233, 0.1);
    box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.2);
}

/* Group Icons */
.group-card-icon {
    font-size: 1.25rem;
    margin-right: 0.5rem;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.1));
}

.matrix-group-icon {
    font-size: 1rem;
    margin-right: 0.625rem;
}

.filter-btn i {
    margin-right: 0.375rem;
    font-size: 0.9rem;
}

/* Responsive Icon Picker */
@media (max-width: 768px) {
    .icon-presets {
        grid-template-columns: repeat(5, 1fr);
    }

    .icon-preset {
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }
}