/*
 * Event QR Admin Panel
 * Apple-inspired minimal enterprise design system
 * Version 1.0
 */

:root {
    /* Apple Color Palette */
    --color-bg: #f5f5f7;
    --color-surface: #ffffff;

    /* Primary Colors */
    --color-primary: #007AFF;
    --color-primary-hover: #0051D5;
    --color-primary-light: #E5F2FF;

    /* Text Colors */
    --color-text-primary: #1d1d1f;
    --color-text-secondary: #86868b;
    --color-text-tertiary: #c7c7cc;

    /* Semantic Colors */
    --color-success: #34C759;
    --color-success-light: #E8F8EC;
    --color-warning: #FF9500;
    --color-warning-light: #FFF4E5;
    --color-danger: #FF3B30;
    --color-danger-light: #FFE8E6;
    --color-info: #5AC8FA;
    --color-info-light: #E5F7FF;

    /* Border & Divider */
    --color-border: #d2d2d7;
    --color-divider: #e5e5ea;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

    /* Spacing (8px grid) */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-7: 2rem;
    --space-8: 2.5rem;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-full: 9999px;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Arial, sans-serif;

    /* Layout */
    --sidebar-width: 240px;
    --topbar-height: 64px;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===========================
   Base Styles
   =========================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: 15px;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-text-primary);
    margin: 0;
}

/* ===========================
   Layout & Sidebar
   =========================== */

.app-container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--color-surface);
    border-right: 1px solid var(--color-divider);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: transform var(--transition-base);
}

.sidebar-header {
    padding: var(--space-6) var(--space-5);
    border-bottom: 1px solid var(--color-divider);
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    color: var(--color-text-primary);
}

.sidebar-logo {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--color-primary), #5AC8FA);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.125rem;
}

.sidebar-logo-img {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    object-fit: contain;
}

.sidebar-brand-text {
    font-size: 1.125rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.sidebar-powered-by {
    text-align: center;
    font-size: 0.6875rem;
    color: var(--color-text-secondary);
    padding-top: var(--space-3);
    border-top: 1px solid var(--color-divider);
    margin-top: var(--space-3);
}

.sidebar-powered-by span {
    font-weight: 500;
    color: var(--color-text-primary);
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-4) var(--space-3);
}

.sidebar-nav {
    list-style: none;
}

.sidebar-nav-section {
    margin-bottom: var(--space-6);
}

.sidebar-nav-section-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    padding: 0 var(--space-3);
    margin-bottom: var(--space-2);
}

.sidebar-nav-item {
    margin-bottom: var(--space-1);
}

.sidebar-nav-link, .sidebar-nav .nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-3);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

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

.sidebar-nav-link.active, .sidebar-nav .nav-link.active {
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-weight: 600;
}

.sidebar-nav-link i, .sidebar-nav .nav-link i {
    font-size: 1.125rem;
    width: 20px;
    text-align: center;
}

.sidebar-footer {
    padding: var(--space-4);
    border-top: 1px solid var(--color-divider);
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.sidebar-user-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary), #5AC8FA);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 0.875rem;
    flex-shrink: 0;
}

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

.sidebar-user-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
}

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

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

.topbar {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-divider);
    height: var(--topbar-height);
    display: flex;
    align-items: center;
    padding: 0 var(--space-7);
    position: sticky;
    top: 0;
    z-index: 100;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    flex: 1;
}

.topbar-search {
    position: relative;
}

.topbar-search-input {
    width: 240px;
    padding: var(--space-2) var(--space-4) var(--space-2) var(--space-8);
    background: var(--color-bg);
    border: 1px solid transparent;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--color-text-primary);
    transition: all var(--transition-fast);
}

.topbar-search-input:focus {
    outline: none;
    background: var(--color-surface);
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
    width: 320px;
}

.topbar-search-icon {
    position: absolute;
    left: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-secondary);
    pointer-events: none;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.topbar-action {
    position: relative;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.topbar-action:hover {
    background: var(--color-bg);
    color: var(--color-text-primary);
}

.topbar-action-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 8px;
    height: 8px;
    background: var(--color-danger);
    border: 2px solid var(--color-surface);
    border-radius: var(--radius-full);
}

.content {
    flex: 1;
    padding: var(--space-7);
}

.content-header {
    margin-bottom: var(--space-7);
}

.content-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-2);
}

.content-title {
    font-size: 2rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.content-subtitle {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

/* ===========================
   Cards
   =========================== */

.card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-divider);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all var(--transition-base);
}

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

.card-header {
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--color-divider);
    background: transparent;
}

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

.card-body {
    padding: var(--space-6);
}

.card-footer {
    padding: var(--space-5) var(--space-6);
    border-top: 1px solid var(--color-divider);
    background: var(--color-bg);
}

/* Stat Cards */
.stat-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-divider);
    padding: var(--space-6);
    transition: all var(--transition-base);
}

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

.stat-card-icon, .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-4);
    font-size: 1.5rem;
}

.stat-card-icon.primary, .stat-icon.primary {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.stat-card-icon.success, .stat-icon.success {
    background: var(--color-success-light);
    color: var(--color-success);
}

.stat-card-icon.warning, .stat-icon.warning {
    background: var(--color-warning-light);
    color: var(--color-warning);
}

.stat-card-icon.danger, .stat-icon.danger {
    background: var(--color-danger-light);
    color: var(--color-danger);
}

.stat-card-icon.info, .stat-icon.info {
    background: var(--color-info-light);
    color: var(--color-info);
}

.stat-card-label, .stat-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    font-weight: 500;
    margin-bottom: var(--space-1);
}

.stat-card-value, .stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
}

/* ===========================
   Buttons
   =========================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    font-size: 0.9375rem;
    font-weight: 500;
    font-family: var(--font-family);
    line-height: 1;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: var(--color-primary-hover);
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
    color: white;
}

.btn-secondary {
    background: var(--color-bg);
    color: var(--color-text-primary);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--color-divider);
}

.btn-success {
    background: var(--color-success);
    color: white;
}

.btn-success:hover:not(:disabled) {
    background: #2CA64A;
    box-shadow: 0 4px 12px rgba(52, 199, 89, 0.3);
}

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

.btn-danger:hover:not(:disabled) {
    background: #E32D22;
    box-shadow: 0 4px 12px rgba(255, 59, 48, 0.3);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-primary);
}

.btn-ghost:hover:not(:disabled) {
    background: var(--color-bg);
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: 0.875rem;
}

.btn-lg {
    padding: var(--space-4) var(--space-7);
    font-size: 1rem;
}

.btn-outline-primary {
    background: transparent;
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
}

.btn-outline-primary:hover:not(:disabled) {
    background: var(--color-primary);
    color: white;
}

.btn-outline-secondary {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
}

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

/* ===========================
   Forms
   =========================== */

.form-group {
    margin-bottom: var(--space-5);
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
}

.form-control, .form-select {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: 0.9375rem;
    font-family: var(--font-family);
    color: var(--color-text-primary);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-control:focus, .form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-control:disabled {
    background: var(--color-bg);
    color: var(--color-text-secondary);
    cursor: not-allowed;
}

.form-control::placeholder {
    color: var(--color-text-tertiary);
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

select.form-control, select.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%2386868b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-4) center;
    padding-right: var(--space-8);
}

.form-check {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
}

.form-check-input {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border);
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.form-check-input:checked {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.form-check-input[type="radio"] {
    border-radius: var(--radius-full);
}

.form-check-label {
    font-size: 0.9375rem;
    color: var(--color-text-primary);
    cursor: pointer;
}

.input-group-text {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    padding: var(--space-3) var(--space-4);
}

/* ===========================
   Tables
   =========================== */

.table-container {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-divider);
}

.table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-surface);
    margin-bottom: 0;
}

.table thead {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-divider);
}

.table th {
    padding: var(--space-4) var(--space-5);
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
}

.table td {
    padding: var(--space-5);
    font-size: 0.9375rem;
    color: var(--color-text-primary);
    border-bottom: 1px solid var(--color-divider);
    vertical-align: middle;
}

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

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

.table-hover tbody tr:hover, .table tbody tr:hover {
    background: var(--color-bg);
}

.table-clickable tbody tr {
    cursor: pointer;
}

/* ===========================
   Badges
   =========================== */

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    line-height: 1;
}

.badge-primary {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.badge-success, .badge-published, .badge-confirmed, .badge-paid {
    background: var(--color-success-light);
    color: var(--color-success);
}

.badge-warning, .badge-pending, .badge-closed, .badge-pendingpayment {
    background: var(--color-warning-light);
    color: var(--color-warning);
}

.badge-danger, .badge-cancelled {
    background: var(--color-danger-light);
    color: var(--color-danger);
}

.badge-info {
    background: var(--color-info-light);
    color: var(--color-info);
}

.badge-secondary, .badge-draft {
    background: var(--color-bg);
    color: var(--color-text-secondary);
}

/* ========================================
   Stats Cards
   ======================================== */

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: var(--transition);
}

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

.stat-icon {
    width: 3rem;
    height: 3rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
    margin: 0;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
}

/* ===========================
   Alerts
   =========================== */

.alert {
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    margin-bottom: var(--space-4);
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
}

.alert-success {
    background: var(--color-success-light);
    color: var(--color-success);
    border: 1px solid var(--color-success);
}

.alert-warning {
    background: var(--color-warning-light);
    color: var(--color-warning);
    border: 1px solid var(--color-warning);
}

.alert-danger {
    background: var(--color-danger-light);
    color: var(--color-danger);
    border: 1px solid var(--color-danger);
}

.alert-info {
    background: var(--color-info-light);
    color: var(--color-info);
    border: 1px solid var(--color-info);
}

.alert-dismissible {
    padding-right: var(--space-10);
    position: relative;
}

.btn-close {
    position: absolute;
    right: var(--space-4);
    top: var(--space-4);
    background: none;
    border: none;
    color: currentColor;
    cursor: pointer;
    padding: 0;
    font-size: 1.25rem;
    line-height: 1;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.btn-close:hover {
    opacity: 1;
}





/* ===========================
   Grid System
   =========================== */

.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 calc(var(--space-4) * -1);
}

.col {
    flex: 1;
    padding: 0 var(--space-4);
    min-width: 0;
}

.col-md-6 {
    flex: 0 0 100%;
    max-width: 100%;
    padding: 0 var(--space-4);
}

.col-md-4 {
    flex: 0 0 100%;
    max-width: 100%;
    padding: 0 var(--space-4);
}

.col-md-3 {
    flex: 0 0 100%;
    max-width: 100%;
    padding: 0 var(--space-4);
}

@media (min-width: 768px) {
    .col-md-6 { flex: 0 0 50%; max-width: 50%; }
    .col-md-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
    .col-md-3 { flex: 0 0 25%; max-width: 25%; }
}

/* ===========================
   Utility Classes
   =========================== */

.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-5 { margin-bottom: var(--space-5); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-7 { margin-bottom: var(--space-7); }

.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }

.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }

.d-flex { display: flex; }
.d-inline-flex { display: inline-flex; }
.flex-column { flex-direction: column; }
.align-items-center { align-items: center; }
.align-items-start { align-items: flex-start; }
.justify-content-center { justify-content: center; }
.justify-content-between { justify-content: space-between; }
.justify-content-end { justify-content: flex-end; }
.flex-1 { flex: 1; }
.flex-wrap { flex-wrap: wrap; }

.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

.text-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.fw-medium { font-weight: 500; }
.fw-semibold { font-weight: 600; }
.fw-bold { font-weight: 700; }

.text-muted { color: var(--color-text-secondary) !important; }
.text-secondary { color: var(--color-text-secondary) !important; }

.position-relative { position: relative; }
.position-absolute { position: absolute; }

/* ===========================
   Responsive Design
   =========================== */

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

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

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

    .content {
        padding: var(--space-5);
    }

    .topbar {
        padding: 0 var(--space-5);
    }

    .topbar-search-input {
        width: 180px;
    }

    .topbar-search-input:focus {
        width: 220px;
    }

    .content-title {
        font-size: 1.5rem;
    }

    .stat-card-value {
        font-size: 1.5rem;
    }

    .d-md-none {
        display: none;
    }
}

@media (min-width: 769px) {
    .d-md-block {
        display: block;
    }

    .d-md-flex {
        display: flex;
    }
}

/* ===========================
   List Groups
   =========================== */

.list-group {
    display: flex;
    flex-direction: column;
}

.list-group-flush .list-group-item:first-child {
    border-top: none;
    border-top-left-radius: 0;
    border-top-right-radius: 0;
}

.list-group-flush .list-group-item:last-child {
    border-bottom: none;
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
}

.list-group-item {
    padding: var(--space-5) var(--space-6);
    border: 1px solid var(--color-divider);
    background: var(--color-surface);
    transition: all var(--transition-fast);
}

.list-group-item:first-child {
    border-top-left-radius: var(--radius-md);
    border-top-right-radius: var(--radius-md);
}

.list-group-item:last-child {
    border-bottom-left-radius: var(--radius-md);
    border-bottom-right-radius: var(--radius-md);
}

.list-group-item-action {
    color: var(--color-text-primary);
    text-decoration: none;
    cursor: pointer;
}

.list-group-item-action:hover {
    background: var(--color-bg);
    color: var(--color-text-primary);
}

/* ===========================
   Empty State
   =========================== */

.empty-state {
    text-align: center;
    padding: var(--space-10) var(--space-6);
}

.empty-state-icon {
    font-size: 4rem;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-4);
}

.empty-state-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
}

.empty-state-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
}

/* ===========================
   Additional Utility Classes
   =========================== */

.shadow-sm {
    box-shadow: var(--shadow-sm);
}

.shadow-md {
    box-shadow: var(--shadow-md);
}

.shadow-lg {
    box-shadow: var(--shadow-lg);
}

.rounded-lg {
    border-radius: var(--radius-lg);
}

.rounded-md {
    border-radius: var(--radius-md);
}

.rounded-sm {
    border-radius: var(--radius-sm);
}

.border-light {
    border-color: var(--color-divider) !important;
}

.bg-light-gray, .bg-light {
    background-color: var(--color-bg);
}

.bg-white {
    background-color: var(--color-surface);
}

.g-4 > * {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
    margin-bottom: var(--space-7);
}

.small {
    font-size: 0.875rem;
}

/* ===========================
   Event Cards
   =========================== */

.event-card {
    display: block;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-divider);
    padding: var(--space-6);
    text-decoration: none;
    color: var(--color-text-primary);
    transition: all var(--transition-base);
    height: 100%;
}

.event-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
    transform: translateY(-2px);
    color: var(--color-text-primary);
}

.event-card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin: 0;
    line-height: 1.4;
}

.event-card-meta {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.event-card-meta i {
    color: var(--color-text-tertiary);
}

.event-card-stats {
    display: flex;
    gap: var(--space-6);
    padding-top: var(--space-4);
    margin-top: var(--space-4);
    border-top: 1px solid var(--color-divider);
}

.event-card-stat {
    display: flex;
    flex-direction: column;
}

.event-card-stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    line-height: 1;
}

.event-card-stat-label {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: var(--space-1);
}

/* Event status colors in cards */
.event-card .badge {
    flex-shrink: 0;
}

/* Hover lift effect */
.hover-lift {
    transition: all var(--transition-base);
}

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

/* Fix stat-card display as block for links */
a.stat-card {
    display: block;
    color: var(--color-text-primary);
}

a.stat-card:hover {
    text-decoration: none;
    color: var(--color-text-primary);
}

a.stat-card.bg-primary {
    color: white;
}

a.stat-card.bg-primary:hover {
    color: white;
}

/* Ensure stat-icons are consistent */
.stat-card .stat-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-bottom: 0;
}

/* Fix stat card with background colors */
.stat-card.bg-primary {
    background: var(--color-primary) !important;
    border-color: var(--color-primary);
}

.stat-card.bg-primary:hover {
    background: var(--color-primary-hover) !important;
}

/* ===========================
   RESPONSIVE & MOBILE ENHANCEMENTS
   =========================== */

/* Sidebar Toggle Button */
.sidebar-toggle {
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--color-text-primary);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    padding: 0;
    margin-right: var(--space-3);
}

.sidebar-toggle:hover {
    background: var(--color-bg);
}

.sidebar-toggle i {
    font-size: 1.25rem;
}

/* Mobile Sidebar Overlay */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    transition: opacity var(--transition-base);
}

body.sidebar-open .sidebar-overlay {
    display: block;
    opacity: 1;
}

/* Touch-Friendly Buttons and Form Controls */
.btn,
.form-control,
.form-select,
.topbar-action {
    min-height: 44px;
}

.btn-sm {
    min-height: 36px;
}

.btn-lg {
    min-height: 52px;
}

/* ===========================
   TABLET BREAKPOINT (max-width: 1024px)
   =========================== */

@media (max-width: 1024px) {
    /* Reduce sidebar width */
    :root {
        --sidebar-width: 220px;
    }

    /* Adjust content padding */
    .content {
        padding: var(--space-6);
    }

    /* Adjust topbar padding */
    .topbar {
        padding: 0 var(--space-6);
    }

    /* Make search input smaller */
    .topbar-search-input {
        width: 200px;
    }

    .topbar-search-input:focus {
        width: 280px;
    }

    /* Adjust content title size */
    .content-title {
        font-size: 1.75rem;
    }

    /* Reduce stat card value size */
    .stat-card-value, .stat-value {
        font-size: 1.75rem;
    }

    /* Stack stat cards in 2 columns */
    .col-md-3 {
        flex: 0 0 50%;
        max-width: 50%;
    }
}

/* ===========================
   MOBILE BREAKPOINT (max-width: 768px)
   =========================== */

@media (max-width: 768px) {
    /* Show sidebar toggle button */
    .sidebar-toggle {
        display: flex;
    }

    /* Hide sidebar by default on mobile */
    .sidebar {
        transform: translateX(-100%);
        box-shadow: none;
    }

    /* Show sidebar when body has sidebar-open class */
    body.sidebar-open .sidebar {
        transform: translateX(0);
        box-shadow: var(--shadow-lg);
    }

    /* Remove margin from main content */
    .main-content {
        margin-left: 0;
    }

    /* Make topbar sticky on mobile */
    .topbar {
        position: sticky;
        top: 0;
        z-index: 100;
        padding: 0 var(--space-4);
    }

    /* Reduce content padding on mobile */
    .content {
        padding: var(--space-4);
    }

    .content-header {
        margin-bottom: var(--space-5);
    }

    /* Adjust content title */
    .content-title {
        font-size: 1.5rem;
    }

    .content-subtitle {
        font-size: 0.875rem;
    }

    /* Stack content title row on mobile */
    .content-title-row {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-3);
    }

    /* Hide or adjust topbar search */
    .topbar-search {
        display: none;
    }

    /* Adjust topbar actions */
    .topbar-right {
        gap: var(--space-2);
    }

    .topbar-action {
        width: 40px;
        height: 40px;
    }

    /* Stack stat cards in single column on mobile */
    .col-md-3,
    .col-md-4,
    .col-md-6 {
        flex: 0 0 100%;
        max-width: 100%;
        margin-bottom: var(--space-4);
    }

    /* Adjust stat card styling */
    .stat-card {
        padding: var(--space-5);
    }

    .stat-card-value, .stat-value {
        font-size: 1.5rem;
    }

    .stat-card-icon, .stat-icon {
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
        margin-bottom: var(--space-3);
    }

    /* Adjust card padding */
    .card-header,
    .card-footer {
        padding: var(--space-4);
    }

    .card-body {
        padding: var(--space-4);
    }

    /* Make table responsive */
    .table-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .table {
        min-width: 600px;
    }

    .table th,
    .table td {
        padding: var(--space-3);
        font-size: 0.875rem;
    }

    /* Adjust button sizes */
    .btn {
        min-height: 44px;
        padding: var(--space-3) var(--space-4);
        font-size: 0.875rem;
    }

    .btn-sm {
        min-height: 36px;
        padding: var(--space-2) var(--space-3);
        font-size: 0.8125rem;
    }

    .btn-lg {
        min-height: 52px;
        padding: var(--space-4) var(--space-6);
    }

    /* Stack buttons on mobile */
    .d-flex.gap-3 .btn,
    .d-flex.gap-4 .btn {
        flex: 1;
        min-width: auto;
    }

    /* Form adjustments */
    .form-control,
    .form-select {
        min-height: 44px;
        padding: var(--space-3);
        font-size: 1rem;
    }

    .form-label {
        font-size: 0.875rem;
    }

    /* Adjust row spacing */
    .row {
        margin: 0 calc(var(--space-2) * -1);
    }

    .col,
    .col-md-3,
    .col-md-4,
    .col-md-6 {
        padding: 0 var(--space-2);
    }

    /* Adjust grid spacing */
    .g-4 > * {
        padding-left: var(--space-2);
        padding-right: var(--space-2);
        margin-bottom: var(--space-4);
    }

    /* Event card adjustments */
    .event-card {
        padding: var(--space-4);
    }

    .event-card-title {
        font-size: 1rem;
    }

    .event-card-stats {
        gap: var(--space-4);
    }

    .event-card-stat-value {
        font-size: 1.25rem;
    }

    /* Badge adjustments */
    .badge {
        padding: 0.25rem 0.5rem;
        font-size: 0.6875rem;
    }

    /* Alert adjustments */
    .alert {
        padding: var(--space-3) var(--space-4);
        font-size: 0.875rem;
    }

    /* List group adjustments */
    .list-group-item {
        padding: var(--space-4);
    }

    /* Empty state adjustments */
    .empty-state {
        padding: var(--space-8) var(--space-4);
    }

    .empty-state-icon {
        font-size: 3rem;
    }

    .empty-state-title {
        font-size: 1.125rem;
    }

    /* Sidebar adjustments */
    .sidebar-header {
        padding: var(--space-5) var(--space-4);
    }

    .sidebar-content {
        padding: var(--space-3);
    }

    .sidebar-footer {
        padding: var(--space-3);
    }

    /* Hide desktop-only elements */
    .d-md-none {
        display: none;
    }
}

/* ===========================
   EXTRA SMALL MOBILE (max-width: 480px)
   =========================== */

@media (max-width: 480px) {
    /* Further reduce padding */
    .content {
        padding: var(--space-3);
    }

    .topbar {
        padding: 0 var(--space-3);
    }

    /* Reduce title sizes */
    .content-title {
        font-size: 1.25rem;
    }

    /* Reduce stat values */
    .stat-card-value, .stat-value {
        font-size: 1.25rem;
    }

    /* Stack event card stats vertically */
    .event-card-stats {
        flex-direction: column;
        gap: var(--space-3);
    }

    /* Make buttons full width in small screens */
    .btn-group-mobile .btn {
        width: 100%;
        margin-bottom: var(--space-2);
    }

    /* Reduce form spacing */
    .form-group {
        margin-bottom: var(--space-4);
    }
}

/* ===========================
   LANDSCAPE MOBILE (max-height: 500px) and (orientation: landscape)
   =========================== */

@media (max-height: 500px) and (orientation: landscape) {
    /* Reduce vertical spacing */
    .sidebar-header {
        padding: var(--space-3) var(--space-4);
    }

    .sidebar-logo-img,
    .sidebar-logo {
        width: 28px;
        height: 28px;
    }

    .topbar {
        height: 56px;
    }

    .content {
        padding: var(--space-4);
    }

    .stat-card {
        padding: var(--space-4);
    }
}

/* ===========================
   TOUCH DEVICE OPTIMIZATIONS
   =========================== */

@media (hover: none) and (pointer: coarse) {
    /* Increase touch targets */
    .sidebar-nav-link,
    .sidebar-nav .nav-link {
        padding: var(--space-4);
        min-height: 44px;
    }

    .topbar-action {
        width: 44px;
        height: 44px;
    }

    .btn {
        min-height: 48px;
    }

    /* Remove hover effects on touch devices */
    .card:hover {
        box-shadow: var(--shadow-sm);
        transform: none;
    }

    .stat-card:hover {
        box-shadow: none;
        transform: none;
    }

    .event-card:hover {
        box-shadow: var(--shadow-md);
        transform: none;
    }

    /* Make scrolling smoother */
    .sidebar-content,
    .table-container {
        -webkit-overflow-scrolling: touch;
    }
}

/* ===========================
   PRINT STYLES
   =========================== */

@media print {
    .sidebar,
    .topbar,
    .sidebar-toggle,
    .sidebar-overlay,
    .btn,
    .topbar-action {
        display: none !important;
    }

    .main-content {
        margin-left: 0 !important;
    }

    .content {
        padding: 0 !important;
    }

    .card,
    .stat-card,
    .event-card {
        border: 1px solid #ddd !important;
        box-shadow: none !important;
        page-break-inside: avoid;
    }
}

/* ===========================
   ACCESSIBILITY ENHANCEMENTS
   =========================== */

/* Focus visible styles for keyboard navigation */
.btn:focus-visible,
.form-control:focus-visible,
.form-select:focus-visible,
.sidebar-nav-link:focus-visible,
.topbar-action:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .sidebar,
    .sidebar-overlay,
    .card,
    .stat-card,
    .event-card,
    .btn {
        transition: none !important;
    }
}