/* ============================================================
   Global Styles
   ============================================================ */

:root {
    --color-primary: #6366f1;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-dark: #1f2937;
    --color-light: #f3f4f6;
    --color-border: #e5e7eb;
    --color-text: #374151;
    --color-muted: #9ca3af;

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    --radius: 0.375rem;
    --radius-lg: 0.5rem;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);

    --transition: all 200ms ease-in-out;
}

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

html, body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-text);
    background: #fafafa;
}

/* ============================================================
   Auth Section
   ============================================================ */

.auth-section {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--color-primary), #8b5cf6);
}

.auth-container {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
}

.auth-container h1 {
    font-size: 28px;
    margin-bottom: var(--spacing-lg);
    text-align: center;
    color: var(--color-dark);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.auth-form label {
    font-weight: 600;
    color: var(--color-dark);
    display: block;
    margin-bottom: var(--spacing-sm);
}

/* ============================================================
   Forms & Inputs
   ============================================================ */

.input, .select {
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 14px;
    transition: var(--transition);
    width: 100%;
}

.input:focus, .select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

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

.btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: #4f46e5;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-secondary {
    background: var(--color-border);
    color: var(--color-dark);
}

.btn-secondary:hover {
    background: #d1d5db;
}

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 12px;
}

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

.btn-danger:hover {
    background: #dc2626;
}

/* ============================================================
   Dashboard
   ============================================================ */

.dashboard {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.header {
    background: white;
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-xl);
}

.header h1 {
    font-size: 24px;
    color: var(--color-dark);
}

.header-actions {
    display: flex;
    gap: var(--spacing-xl);
    align-items: center;
}

.stats-bar {
    display: flex;
    gap: var(--spacing-lg);
}

.stat {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.stat .label {
    font-size: 12px;
    color: var(--color-muted);
    font-weight: 500;
    text-transform: uppercase;
}

.stat .value {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary);
}

.container {
    flex: 1;
    padding: var(--spacing-xl);
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
}

/* ============================================================
   Tabs
   ============================================================ */

.tabs {
    display: flex;
    gap: var(--spacing-md);
    border-bottom: 2px solid var(--color-border);
    margin-bottom: var(--spacing-lg);
}

.tab-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    background: none;
    border: none;
    font-weight: 600;
    color: var(--color-muted);
    cursor: pointer;
    position: relative;
    transition: var(--transition);
}

.tab-btn.active {
    color: var(--color-primary);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-primary);
}

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

.tab-content {
    display: none;
    animation: fadeIn 200ms ease-in-out;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================================
   Sessions List
   ============================================================ */

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    gap: var(--spacing-lg);
}

.section-header h2 {
    font-size: 20px;
    color: var(--color-dark);
}

.filters {
    display: flex;
    gap: var(--spacing-md);
    flex: 1;
    max-width: 500px;
}

.filters input, .filters select {
    flex: 1;
}

.sessions-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.session-card {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: var(--transition);
}

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

.session-card-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: var(--spacing-md);
    gap: var(--spacing-lg);
}

.session-info {
    flex: 1;
}

.session-id {
    font-weight: 700;
    color: var(--color-dark);
    font-size: 15px;
    font-family: 'Courier New', monospace;
    margin-bottom: var(--spacing-sm);
}

.session-meta {
    display: flex;
    gap: var(--spacing-lg);
    font-size: 13px;
    color: var(--color-muted);
}

.session-meta-item {
    display: flex;
    gap: var(--spacing-sm);
}

.session-card-body {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.session-stat {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.session-stat-label {
    font-size: 12px;
    color: var(--color-muted);
    text-transform: uppercase;
    font-weight: 600;
}

.session-stat-value {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-dark);
}

.session-actions {
    display: flex;
    gap: var(--spacing-md);
}

.online-indicator {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
    border-radius: var(--radius);
    font-size: 12px;
    font-weight: 600;
}

.online-dot {
    width: 8px;
    height: 8px;
    background: var(--color-success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* ============================================================
   Modal
   ============================================================ */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 200ms ease-in-out;
}

.modal-content {
    background: white;
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 900px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
}

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

.modal-header h2 {
    font-size: 20px;
    color: var(--color-dark);
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--color-muted);
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--color-dark);
}

.modal-body {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-lg);
}

.modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
}

.modal-tabs {
    display: flex;
    gap: var(--spacing-md);
    border-bottom: 2px solid var(--color-border);
    margin: var(--spacing-lg) 0;
}

.modal-tab-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    background: none;
    border: none;
    font-weight: 600;
    color: var(--color-muted);
    cursor: pointer;
    position: relative;
    transition: var(--transition);
}

.modal-tab-btn.active {
    color: var(--color-primary);
}

.modal-tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-primary);
}

.modal-tab-content {
    display: none;
}

.modal-tab-content.active {
    display: block;
}

/* ============================================================
   Session Details
   ============================================================ */

.session-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.detail-label {
    font-size: 12px;
    color: var(--color-muted);
    text-transform: uppercase;
    font-weight: 600;
}

.detail-value {
    font-size: 14px;
    color: var(--color-dark);
    word-break: break-all;
    font-family: 'Courier New', monospace;
    background: var(--color-light);
    padding: var(--spacing-md);
    border-radius: var(--radius);
}

/* ============================================================
   Actions List
   ============================================================ */

.actions-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.action-item {
    padding: var(--spacing-md);
    background: var(--color-light);
    border-left: 3px solid var(--color-primary);
    border-radius: var(--radius);
    display: flex;
    justify-content: space-between;
    align-items: start;
}

.action-type {
    font-weight: 700;
    color: var(--color-primary);
    text-transform: uppercase;
    font-size: 12px;
}

.action-time {
    font-size: 12px;
    color: var(--color-muted);
}

.action-data {
    font-size: 13px;
    color: var(--color-text);
    margin-top: var(--spacing-sm);
    max-height: 100px;
    overflow: auto;
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
}

/* ============================================================
   Timeline
   ============================================================ */

.timeline {
    position: relative;
    padding-left: var(--spacing-xl);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-border);
}

.timeline-item {
    position: relative;
    padding-bottom: var(--spacing-lg);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -9px;
    top: 3px;
    width: 16px;
    height: 16px;
    background: var(--color-primary);
    border: 3px solid white;
    border-radius: 50%;
    box-shadow: 0 0 0 1px var(--color-primary);
}

.timeline-label {
    font-weight: 700;
    color: var(--color-dark);
    font-size: 14px;
}

.timeline-time {
    font-size: 12px;
    color: var(--color-muted);
    margin-top: var(--spacing-xs);
}

/* ============================================================
   Analytics
   ============================================================ */

.analytics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-lg);
}

.chart-container {
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow);
}

.chart-container h3 {
    margin-bottom: var(--spacing-lg);
    color: var(--color-dark);
}

.chart {
    max-height: 300px;
}

.list-chart {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.chart-bar {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.chart-label {
    flex: 1;
    min-width: 150px;
    font-size: 13px;
    color: var(--color-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chart-progress {
    flex: 2;
    height: 24px;
    background: var(--color-light);
    border-radius: var(--radius);
    overflow: hidden;
}

.chart-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), #8b5cf6);
    transition: width 500ms ease-in-out;
}

.chart-value {
    flex: 0.5;
    text-align: right;
    font-weight: 700;
    color: var(--color-dark);
    min-width: 50px;
}

/* ============================================================
   Fingerprints
   ============================================================ */

.fingerprints-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.fingerprint-card {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: var(--transition);
}

.fingerprint-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.fingerprint-id {
    font-weight: 700;
    color: var(--color-dark);
    font-family: 'Courier New', monospace;
    word-break: break-all;
    margin-bottom: var(--spacing-md);
    font-size: 13px;
}

.fingerprint-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.fingerprint-detail {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.fingerprint-detail:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.fingerprint-label {
    color: var(--color-muted);
    font-weight: 600;
}

.fingerprint-value {
    color: var(--color-dark);
    font-weight: 700;
}

/* ============================================================
   Online Widget
   ============================================================ */

.online-widget {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    width: 280px;
    box-shadow: var(--shadow-lg);
    z-index: 100;
}

.online-widget h3 {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-dark);
}

.online-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-height: 300px;
    overflow-y: auto;
}

.online-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-light);
    border-radius: var(--radius);
    font-size: 12px;
    color: var(--color-text);
}

.online-item .online-dot {
    flex-shrink: 0;
}

.online-label {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
}

/* ============================================================
   Loading State
   ============================================================ */

.loading {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--color-muted);
}

.loading::after {
    content: '';
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--color-light);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: var(--spacing-md);
}

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

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

@media (max-width: 768px) {
    .container {
        padding: var(--spacing-lg);
    }

    .header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-lg);
    }

    .header-actions {
        flex-direction: column;
        width: 100%;
        gap: var(--spacing-lg);
    }

    .stats-bar {
        flex-wrap: wrap;
        width: 100%;
    }

    .stats-bar .stat {
        flex: 1;
        min-width: 120px;
    }

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

    .filters {
        width: 100%;
    }

    .session-card-header {
        flex-direction: column;
    }

    .session-card-body {
        grid-template-columns: 1fr;
    }

    .analytics-grid {
        grid-template-columns: 1fr;
    }

    .fingerprints-list {
        grid-template-columns: 1fr;
    }

    .modal-content {
        width: 95%;
        height: 95vh;
    }

    .online-widget {
        position: static;
        width: 100%;
        margin-top: var(--spacing-lg);
    }
}