/* ==============================================
   QR-Code Manager – Modern Dashboard Styles
   ============================================== */

/* CSS Custom Properties */
:root {
    --bg-primary: #f5f7fa;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --text-primary: #1a1a2e;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --border-color: #e5e7eb;
    --accent: #6366f1;
    --accent-hover: #4f46e5;
    --accent-light: #eef2ff;
    --success: #10b981;
    --success-bg: #ecfdf5;
    --error: #ef4444;
    --error-bg: #fef2f2;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --sidebar-bg: #1e1b4b;
    --sidebar-text: #c7d2fe;
    --sidebar-active: #6366f1;
    --sidebar-hover: rgba(99, 102, 241, 0.15);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.06);
    --radius: 8px;
    --radius-lg: 12px;
    --transition: 0.2s ease;
}

[data-theme="dark"] {
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-card: #1a1a2e;
    --text-primary: #e5e7eb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --border-color: #2d2d44;
    --accent-light: #1e1b4b;
    --success-bg: #064e3b;
    --error-bg: #450a0a;
    --sidebar-bg: #0a0a14;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.25);
}

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

html {
    font-size: 15px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--accent-hover);
}

/* Login Page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4338ca 100%);
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 1rem;
}

.login-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
}

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

.login-icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.login-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

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

.login-form .form-group {
    margin-bottom: 1.25rem;
}

/* App Layout */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    overflow-y: auto;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-logo {
    font-size: 1.5rem;
}

.sidebar-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: #fff;
}

.sidebar-nav {
    flex: 1;
    padding: 1rem 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    color: var(--sidebar-text);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition);
}

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

.nav-item.active {
    background: var(--sidebar-active);
    color: #fff;
}

.nav-icon {
    font-size: 1.1rem;
    width: 1.5rem;
    text-align: center;
}

.sidebar-footer {
    padding: 1rem 1.25rem;
    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: 0.5rem;
    font-size: 0.85rem;
}

.user-icon {
    font-size: 1.2rem;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 260px;
    min-height: 100vh;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 2rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 50;
}

.page-header h1 {
    font-size: 1.35rem;
    font-weight: 700;
}

.page-content {
    padding: 1.5rem 2rem;
}

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 0.5rem 0.75rem;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all var(--transition);
}

.theme-toggle:hover {
    background: var(--accent-light);
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.card-header h2 {
    font-size: 1rem;
    font-weight: 600;
}

.card-body {
    padding: 1.5rem;
}

/* Stats Cards */
.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: var(--shadow-sm);
}

.stat-icon {
    font-size: 2rem;
}

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Two Column Layout */
.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

/* Quick Actions */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
}

.action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem 1rem;
    background: var(--accent-light);
    border-radius: var(--radius);
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--accent);
    transition: all var(--transition);
    text-align: center;
}

.action-btn:hover {
    background: var(--accent);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.action-icon {
    font-size: 1.75rem;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
}

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

.table th {
    text-align: left;
    padding: 0.75rem 1rem;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    border-bottom: 2px solid var(--border-color);
}

.table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.table tbody tr:hover {
    background: var(--accent-light);
}

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

.url-cell {
    max-width: 250px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.ua-cell {
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.actions-cell {
    white-space: nowrap;
    display: flex;
    gap: 0.35rem;
}

/* QR Code Display */
.qr-result {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    margin: 1.5rem 0;
    padding: 1.5rem;
    background: var(--accent-light);
    border-radius: var(--radius-lg);
}

.qr-preview {
    flex-shrink: 0;
}

.qr-image {
    width: 200px;
    height: 200px;
    border-radius: var(--radius);
    background: #fff;
    padding: 0.5rem;
}

.qr-image-large {
    width: 280px;
    height: 280px;
    border-radius: var(--radius);
    background: #fff;
    padding: 0.5rem;
}

.qr-thumb {
    width: 48px;
    height: 48px;
    border-radius: 4px;
    background: #fff;
    padding: 2px;
}

.qr-thumb-cell {
    width: 60px;
}

.qr-info p {
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.qr-info code {
    background: var(--bg-primary);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.85rem;
}

.qr-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 0.75rem;
}

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

/* Detail List */
.detail-list {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.5rem 1.5rem;
    font-size: 0.9rem;
}

.detail-list dt {
    font-weight: 600;
    color: var(--text-secondary);
}

.detail-list dd {
    word-break: break-all;
}

.detail-list code {
    background: var(--bg-primary);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.85rem;
}

/* Bar Chart */
.bar-chart {
    display: flex;
    align-items: flex-end;
    justify-content: space-around;
    height: 180px;
    gap: 0.5rem;
    padding: 0 1rem;
}

.bar-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
    height: 100%;
    justify-content: flex-end;
}

.bar {
    width: 100%;
    max-width: 60px;
    background: linear-gradient(180deg, var(--accent), var(--accent-hover));
    border-radius: 4px 4px 0 0;
    min-height: 4px;
    transition: height 0.3s ease;
}

.bar-value {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.bar-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

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

.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.85rem;
    margin-bottom: 0.35rem;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.65rem 0.85rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: inherit;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.form-group small {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.78rem;
    color: var(--text-muted);
}

.create-form {
    max-width: 600px;
    margin-top: 1.5rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.55rem 1.15rem;
    border: none;
    border-radius: var(--radius);
    font-size: 0.85rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    line-height: 1.4;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}

.btn-primary:hover {
    background: var(--accent-hover);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

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

.btn-outline:hover {
    background: var(--accent-light);
    border-color: var(--accent);
    color: var(--accent);
}

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

.btn-danger:hover {
    background: var(--danger-hover);
    color: #fff;
}

.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.78rem;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* Alerts */
.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    font-weight: 500;
}

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

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

/* Empty State */
.empty-state {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--text-muted);
}

.empty-state .btn {
    margin-top: 1rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .two-col,
    .detail-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        position: relative;
        flex-direction: row;
        overflow-x: auto;
        padding: 0;
    }

    .sidebar-header {
        padding: 0.75rem 1rem;
        border-bottom: none;
        border-right: 1px solid rgba(255, 255, 255, 0.1);
    }

    .sidebar-nav {
        flex-direction: row;
        padding: 0.5rem;
        gap: 0.25rem;
    }

    .nav-item {
        padding: 0.5rem 0.75rem;
        white-space: nowrap;
        font-size: 0.8rem;
    }

    .nav-item span:last-child {
        display: none;
    }

    .sidebar-footer {
        padding: 0.5rem 1rem;
        border-top: none;
        border-left: 1px solid rgba(255, 255, 255, 0.1);
    }

    .user-info span:last-child {
        display: none;
    }

    .app-layout {
        flex-direction: column;
    }

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

    .page-content {
        padding: 1rem;
    }

    .qr-result {
        flex-direction: column;
        align-items: center;
    }

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