/* Modern SaaS Dashboard Styling */
:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --success-hover: #059669;
    --danger-color: #ef4444;
    --danger-hover: #dc2626;
    --warning-color: #f59e0b;
    --info-color: #06b6d4;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --border-color: #e2e8f0;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
}

/* Utility Classes */
.hidden { display: none !important; }
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }

/* Login Screens */
.login-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.login-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 3rem;
    width: 100%;
    max-width: 420px;
}

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

.login-header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.login-header p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

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

.form-group label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.form-group input,
.form-group textarea {
    padding: 0.875rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all 0.2s ease;
    background: var(--bg-primary);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.name-note {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: var(--radius-md);
    padding: 1rem;
    margin-top: 1rem;
}

.name-note p {
    color: var(--primary-color);
    font-size: 0.875rem;
    line-height: 1.5;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-decoration: none;
    user-select: none;
}

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

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover:not(:disabled) {
    background: #475569;
    transform: translateY(-1px);
}

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

.btn-success:hover:not(:disabled) {
    background: var(--success-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-danger:hover:not(:disabled) {
    background: var(--danger-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* Dashboard Header */
.dashboard-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1.5rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.user-greeting {
    font-size: 1rem;
    opacity: 0.9;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.timer-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.timer-display {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.timer-label {
    font-size: 0.875rem;
    opacity: 0.9;
}

.timer-value {
    font-family: 'JetBrains Mono', 'SF Mono', monospace;
    font-weight: 600;
    font-size: 1rem;
}

/* Tab Navigation */
.tab-nav {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    padding: 0 2rem;
}

.tab-btn {
    background: none;
    border: none;
    padding: 1rem 2rem;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    position: relative;
}

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

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

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

/* Tab Content */
.tab-content {
    min-height: calc(100vh - 200px);
    background: var(--bg-secondary);
}

.tab-pane {
    display: none;
    padding: 2rem;
}

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

/* Work Tab */
.work-container {
    max-width: 1200px;
    margin: 0 auto;
}

.product-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.product-header {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding: 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
}

.product-info {
    flex: 1;
}

.product-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.product-sku {
    font-size: 1rem;
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', 'SF Mono', monospace;
}

.product-timer {
    background: var(--bg-primary);
    padding: 1rem 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Checklist */
.checklist-container {
    padding: 2rem;
}

.checklist-container h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2rem;
    text-align: center;
}

.checklist {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.checklist-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    border-left: 4px solid var(--border-color);
    transition: all 0.2s ease;
}

.checklist-item:hover {
    border-left-color: var(--primary-color);
    background: #f1f5f9;
}

.checklist-item.completed {
    border-left-color: var(--success-color);
    background: rgba(16, 185, 129, 0.05);
}

.checklist-item.failed {
    border-left-color: var(--danger-color);
    background: rgba(239, 68, 68, 0.05);
}

.checklist-label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    display: block;
}

.checklist-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.checklist-btn {
    padding: 0.5rem 1rem;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 80px;
}

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

.checklist-btn.yes:hover {
    background: var(--success-hover);
    transform: translateY(-1px);
}

.checklist-btn.no {
    background: var(--danger-color);
    color: white;
}

.checklist-btn.no:hover {
    background: var(--danger-hover);
    transform: translateY(-1px);
}

.checklist-btn.selected {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.checklist-instruction {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-style: italic;
    margin-top: 0.5rem;
    padding: 0.75rem;
    background: rgba(59, 130, 246, 0.1);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--primary-color);
}

.checklist-link {
    background: var(--info-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    cursor: pointer;
    margin-top: 0.5rem;
    transition: all 0.2s ease;
}

.checklist-link:hover {
    background: #0891b2;
    transform: translateY(-1px);
}

.checklist-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: var(--radius-md);
    padding: 1rem;
    margin-top: 1rem;
    color: #92400e;
    font-weight: 600;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 1rem;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-color);
}

/* Validation Message */
.validation-message {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--radius-md);
    padding: 1rem;
    margin-top: 1rem;
    color: var(--danger-color);
    font-weight: 600;
    text-align: center;
}

/* Analytics Tab */
.analytics-container {
    max-width: 1200px;
    margin: 0 auto;
}

.analytics-header {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: 2rem;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

.analytics-header h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2rem;
    text-align: center;
}

.analytics-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.summary-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    transition: all 0.2s ease;
}

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

.summary-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.summary-label {
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.5px;
}

.analytics-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.leaderboard-section,
.stats-section {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: 2rem;
    border: 1px solid var(--border-color);
}

.leaderboard-section h3,
.stats-section h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.leaderboard {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.leaderboard-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.leaderboard-rank {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.25rem;
    min-width: 2rem;
}

.leaderboard-name {
    font-weight: 600;
    color: var(--text-primary);
    flex: 1;
    margin-left: 1rem;
}

.leaderboard-stats {
    display: flex;
    gap: 1rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

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

.stat-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem;
    text-align: center;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

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

/* Feedback Tab */
.feedback-container {
    max-width: 800px;
    margin: 0 auto;
}

.feedback-header {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: 2rem;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
    text-align: center;
}

.feedback-header h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.feedback-header p {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

.feedback-form {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: 2rem;
    border: 1px solid var(--border-color);
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 900px;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid var(--border-color);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0.5rem;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

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

.modal-body {
    padding: 2rem;
}

.instruction-steps {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.step {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    border-left: 4px solid var(--primary-color);
}

.step h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.step img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    margin-bottom: 1rem;
}

.step p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Success/Error Messages */
.success-message {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: var(--radius-md);
    padding: 1rem;
    color: var(--success-color);
    font-weight: 600;
    margin-top: 1rem;
}

.error-message {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--radius-md);
    padding: 1rem;
    color: var(--danger-color);
    font-weight: 600;
    margin-top: 1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .login-container {
        padding: 2rem;
        margin: 1rem;
    }
    
    .dashboard-header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
        padding: 1rem;
    }
    
    .timer-container {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .tab-nav {
        padding: 0 1rem;
    }
    
    .tab-pane {
        padding: 1rem;
    }
    
    .product-header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .checklist-buttons {
        justify-content: center;
    }
    
    .action-buttons {
        flex-direction: column;
        gap: 1rem;
    }
    
    .analytics-content {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        margin: 1rem;
        max-height: calc(100vh - 2rem);
    }
}

/* Smooth Animations */
* {
    transition: all 0.2s ease;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* Enhanced Validation Message Styles */
.validation-message {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin-top: 1rem;
    color: var(--danger-color);
    font-weight: 500;
    text-align: left;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.validation-header {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.validation-list {
    margin: 0;
    padding-left: 1rem;
}

.validation-list li {
    margin-bottom: 0.5rem;
}

.validation-category {
    margin-bottom: 1rem;
}

.validation-category strong {
    color: var(--danger-color);
    font-weight: 600;
}

.validation-category ul {
    margin-top: 0.5rem;
    margin-bottom: 0;
    padding-left: 1.5rem;
}

.validation-category ul li {
    margin-bottom: 0.25rem;
    font-size: 0.95rem;
}

/* Enhanced Checklist Color Logic */
.checklist-item.completed {
    border-left-color: var(--success-color);
    background: rgba(16, 185, 129, 0.05);
}

.checklist-item.failed {
    border-left-color: var(--danger-color);
    background: rgba(239, 68, 68, 0.05);
}

.checklist-item.neutral {
    border-left-color: var(--info-color);
    background: rgba(6, 182, 212, 0.05);
}

/* Conditional items styling */
.checklist-item.conditional-item.disabled {
    opacity: 0.5;
    pointer-events: none;
    background: rgba(148, 163, 184, 0.1);
    border-left-color: var(--text-muted);
}

.checklist-item.conditional-item.disabled .checklist-label {
    color: var(--text-muted);
}

.checklist-item.conditional-item.disabled .checklist-btn {
    background: var(--text-muted);
    cursor: not-allowed;
}

/* Enhanced warning styling */
.checklist-warning {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--radius-md);
    padding: 1rem;
    margin-top: 1rem;
    color: var(--danger-color);
    font-weight: 600;
    border-left: 4px solid var(--danger-color);
}

/* Button color fixes for bad answers */
.checklist-btn.yes.selected {
    background: var(--success-color);
    color: white;
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.checklist-btn.no.selected {
    background: var(--success-color);
    color: white;
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

/* Override for failed items (bad answers) */
.checklist-item.failed .checklist-btn.yes.selected {
    background: var(--danger-color);
    color: white;
}

.checklist-item.failed .checklist-btn.no.selected {
    background: var(--success-color);
    color: white;
}

/* Override for neutral items */
.checklist-item.neutral .checklist-btn.yes.selected,
.checklist-item.neutral .checklist-btn.no.selected {
    background: var(--info-color);
    color: white;
}

/* Enhanced validation message styles */
.validation-message {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin-top: 1rem;
    color: var(--danger-color);
    font-weight: 500;
    text-align: left;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.validation-header {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.validation-list {
    margin: 0;
    padding-left: 1rem;
}

.validation-list li {
    margin-bottom: 0.5rem;
}

.validation-category {
    margin-bottom: 1rem;
}

.validation-category strong {
    color: var(--danger-color);
    font-weight: 600;
}

.validation-category ul {
    margin-top: 0.5rem;
    margin-bottom: 0;
    padding-left: 1.5rem;
}

.validation-category ul li {
    margin-bottom: 0.25rem;
    font-size: 0.95rem;
}