/* 
 * App Styles
 */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,wght@0,400;0,500;0,600;0,700;1,400&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    /* Color palette - muted, intimate tones */
    --bg-primary: #0f0f12;
    --bg-secondary: #18181d;
    --bg-tertiary: #1f1f26;
    --bg-card: #232329;
    --bg-hover: #2a2a32;
    
    --text-primary: #e8e6f0;
    --text-secondary: #9995a8;
    --text-muted: #6b6778;
    
    --accent-a: #7c6aef;
    --accent-a-light: #9d8ff5;
    --accent-a-bg: rgba(124, 106, 239, 0.12);
    
    --accent-b: #ef6a9a;
    --accent-b-light: #f58eb3;
    --accent-b-bg: rgba(239, 106, 154, 0.12);
    
    --success: #5dd39e;
    --warning: #f5b942;
    --error: #ef6a6a;
    
    --border-color: #2d2d36;
    --border-light: #3a3a45;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Border radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.2);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.3);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.4);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;
}

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

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

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

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

h1 { font-size: 1.75rem; }
h2 { font-size: 1.4rem; }
h3 { font-size: 1.15rem; }

p { color: var(--text-secondary); }

/* Layout */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    padding: var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

/* Header */
.app-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) var(--spacing-lg);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    font-size: 1.1rem;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--accent-a), var(--accent-b));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.user-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
}

.user-badge.role-a {
    border: 1px solid var(--accent-a);
    color: var(--accent-a-light);
}

.user-badge.role-b {
    border: 1px solid var(--accent-b);
    color: var(--accent-b-light);
}

.role-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.role-a .role-dot { background: var(--accent-a); }
.role-b .role-dot { background: var(--accent-b); }

/* Navigation */
.nav-tabs {
    display: flex;
    gap: var(--spacing-xs);
    background: var(--bg-secondary);
    padding: var(--spacing-sm);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.nav-tab {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

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

.nav-tab.active {
    background: var(--bg-card);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

.nav-tab .badge {
    background: var(--accent-b);
    color: white;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 10px;
    font-weight: 600;
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.card:hover {
    border-color: var(--border-light);
}

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

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-lg);
}

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

.form-input {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-a);
    box-shadow: 0 0 0 3px var(--accent-a-bg);
}

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

textarea.form-input {
    resize: vertical;
    min-height: 80px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

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

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

.btn-primary:hover:not(:disabled) {
    background: var(--accent-a-light);
    transform: translateY(-1px);
}

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

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

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

.btn-danger:hover:not(:disabled) {
    filter: brightness(1.1);
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.8rem;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
}

/* Rating Slider */
.rating-container {
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.rating-container:focus-within {
    border-color: var(--accent-a);
}

.rating-question {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
    gap: var(--spacing-md);
}

.rating-question-text {
    font-size: 0.95rem;
    color: var(--text-primary);
    flex: 1;
}

.rating-value {
    font-size: 1.5rem;
    font-weight: 700;
    min-width: 40px;
    text-align: right;
    font-family: 'JetBrains Mono', monospace;
}

.rating-value.role-a { color: var(--accent-a); }
.rating-value.role-b { color: var(--accent-b); }

.rating-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 8px;
    background: var(--bg-secondary);
    border-radius: 4px;
    outline: none;
    margin-bottom: var(--spacing-sm);
}

.rating-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    background: var(--accent-a);
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.rating-slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

.rating-slider.role-b::-webkit-slider-thumb {
    background: var(--accent-b);
}

.rating-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.rating-note-toggle {
    margin-top: var(--spacing-md);
    font-size: 0.8rem;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.rating-note-toggle:hover {
    color: var(--text-primary);
}

.rating-note {
    margin-top: var(--spacing-sm);
}

/* Date Picker */
.date-picker-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.date-nav-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.date-display {
    flex: 1;
    text-align: center;
}

.date-display input[type="date"] {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    cursor: pointer;
}

.date-display input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(1);
    cursor: pointer;
}

/* Progress Section */
.progress-section {
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--border-color);
}

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

.progress-dates {
    display: flex;
    gap: var(--spacing-xl);
}

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

.progress-date-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.progress-date-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.progress-bar-container {
    background: var(--bg-primary);
    height: 12px;
    border-radius: 6px;
    overflow: hidden;
    position: relative;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-a), var(--accent-b));
    border-radius: 6px;
    transition: width var(--transition-slow);
    position: relative;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.progress-stats {
    display: flex;
    justify-content: space-between;
    margin-top: var(--spacing-md);
    font-size: 0.875rem;
}

.progress-stat {
    color: var(--text-secondary);
}

.progress-stat strong {
    color: var(--text-primary);
}

/* Statistics Charts */
.chart-container {
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

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

.chart-title {
    font-size: 1rem;
    font-weight: 600;
}

.chart-legend {
    display: flex;
    gap: var(--spacing-md);
}

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

.legend-color {
    width: 12px;
    height: 12px;
    border-radius: 3px;
}

/* Settings */
.settings-section {
    margin-bottom: var(--spacing-xl);
}

.settings-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}

.settings-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border-color);
}

.settings-row:last-child {
    border-bottom: none;
}

.settings-label {
    font-size: 0.9rem;
    color: var(--text-primary);
}

.settings-description {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

/* Login */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: var(--spacing-lg);
}

.login-card {
    width: 100%;
    max-width: 400px;
    padding: var(--spacing-2xl);
}

.login-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.login-logo {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--accent-a), var(--accent-b));
    border-radius: var(--radius-lg);
    margin: 0 auto var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

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

/* Questions Management */
.question-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    border: 1px solid var(--border-color);
}

.question-item.inactive {
    opacity: 0.5;
}

.question-text {
    flex: 1;
    font-size: 0.9rem;
}

.question-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.request-item {
    background: var(--bg-tertiary);
    border: 1px solid var(--warning);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

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

.request-type {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    background: var(--warning);
    color: var(--bg-primary);
    font-weight: 600;
}

/* Extensions Log */
.extension-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    border-left: 3px solid var(--accent-b);
}

.extension-days {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent-b);
}

.extension-reason {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: var(--spacing-xs);
}

.extension-date {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    display: flex;
    flex-direction: column-reverse;
    gap: var(--spacing-sm);
    pointer-events: none;
}

.toast {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--success);
    animation: slideUp var(--transition-normal) ease-out;
    max-width: 350px;
    pointer-events: auto;
    text-align: center;
}

.toast.error {
    border-left-color: var(--error);
}

.toast.warning {
    border-left-color: var(--warning);
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Loading */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 15, 18, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-a);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--spacing-md);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

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

.modal-title {
    font-size: 1.1rem;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.modal-body {
    padding: var(--spacing-lg);
}

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

/* Tabs Content */
.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn var(--transition-normal);
}

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

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

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

/* Responsive Design */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .header-content {
        flex-wrap: wrap;
    }
    
    .nav-tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        flex-wrap: nowrap;
    }
    
    .nav-tabs::-webkit-scrollbar {
        display: none;
    }
    
    .nav-tab {
        white-space: nowrap;
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .progress-dates {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .progress-header {
        flex-direction: column;
        text-align: center;
    }
    
    .card {
        padding: var(--spacing-md);
    }
    
    .rating-container {
        padding: var(--spacing-md);
    }
    
    .settings-row {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .modal {
        max-width: 100%;
        margin: var(--spacing-md);
        border-radius: var(--radius-lg);
    }
    
    .toast-container {
        left: var(--spacing-md);
        right: var(--spacing-md);
        transform: none;
        bottom: var(--spacing-lg);
    }
    
    .toast {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: var(--spacing-sm);
    }
    
    .app-header {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .logo span {
        display: none;
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .date-picker-container {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }
    
    .date-picker-container .btn {
        flex: 1;
        min-width: auto;
    }
    
    .progress-section {
        padding: var(--spacing-lg);
    }
    
    .progress-dates {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .progress-stats {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    /* Settings grid on mobile */
    .settings-section [style*="grid-template-columns: 1fr 1fr"] {
        grid-template-columns: 1fr !important;
    }
    
    /* Archive buttons */
    .settings-section .btn + .btn {
        margin-left: 0 !important;
        margin-top: var(--spacing-sm);
    }
    
    /* Question type selection on mobile */
    .form-group [style*="display: flex"][style*="gap"] {
        flex-direction: column;
    }
    
    /* Extension preview */
    #extension-preview {
        font-size: 0.9rem;
    }
    
    /* Statistics grid */
    [style*="grid-template-columns: repeat(auto-fit"] {
        grid-template-columns: 1fr 1fr !important;
    }
}

/* Print styles */
@media print {
    .app-header,
    .nav-tabs,
    .btn,
    .toast-container {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .card {
        border: 1px solid #ddd;
        break-inside: avoid;
    }
}