/**
 * Truth Spin - A Roleta da Verdade
 * Desenvolvido por B20 Conteúdo Digital
 * https://www.b20.com.br
 * Todos os direitos reservados
 */

/* ========================================
   CSS CUSTOM PROPERTIES
   ======================================== */

:root {
    /* Color Palette */
    --primary-color: #7D2AE7;
    --secondary-color: #00C4CC;
    --accent-pink: #FF4A8B;
    --accent-yellow: #FFD951;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --background: #FFFFFF;
    --surface: #F8F9FA;
    --border-color: #E0E0E0;
    --success: #10B981;
    --error: #EF4444;
    --warning: #F59E0B;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Z-index */
    --z-header: 100;
    --z-nav: 90;
    --z-modal: 200;
    --z-toast: 300;
}

/* Dark Mode */
[data-theme="dark"] {
    --text-primary: #F8F9FA;
    --text-secondary: #B0B0B0;
    --background: #0F0F0F;
    --surface: #1A1A1A;
    --border-color: #2A2A2A;
}

/* ========================================
   RESET & BASE STYLES
   ======================================== */

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

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

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background);
    overflow-x: hidden;
    padding-bottom: calc(88px + env(safe-area-inset-bottom));
}

/* Screen Reader Only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* ========================================
   HEADER
   ======================================== */

.app-header {
    position: sticky;
    top: 0;
    z-index: var(--z-header);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.app-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin: 0;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: white;
}

.app-logo {
    height: 40px;
    width: auto;
    max-width: 200px;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
    transition: transform var(--transition-base);
}

.app-logo:hover {
    transform: scale(1.05);
}

.app-title span {
    display: inline-block;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.title-icon {
    font-size: var(--font-size-3xl);
    animation: pulse 2s infinite;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.title-icon i {
    color: var(--accent-yellow);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.header-controls {
    display: flex;
    gap: var(--spacing-sm);
}

.icon-btn {
    position: relative;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
}

.icon-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

.icon-btn:active {
    transform: scale(0.95);
}

.lang-badge {
    position: absolute;
    bottom: -4px;
    right: -4px;
    background: var(--accent-pink);
    color: white;
    font-size: var(--font-size-xs);
    font-weight: 700;
    padding: 2px 4px;
    border-radius: var(--radius-sm);
}

/* ========================================
   MAIN CONTENT
   ======================================== */

.main-content {
    min-height: calc(100vh - 200px);
    padding: var(--spacing-lg) var(--spacing-md);
}

.container {
    max-width: 800px;
    margin: 0 auto;
}

.section {
    display: none;
    animation: fadeIn var(--transition-base);
}

.section.active {
    display: block;
}

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

/* ========================================
   WELCOME SECTION
   ======================================== */

.welcome-section {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    padding: var(--spacing-xl) 0;
}

.welcome-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.welcome-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ========================================
   MODE SELECTOR
   ======================================== */

.mode-selector {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.mode-btn {
    background: var(--surface);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-xs);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    transition: all var(--transition-base);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.mode-btn i {
    font-size: var(--font-size-lg);
    color: var(--primary-color);
}

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

.mode-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-color: transparent;
    color: white;
}

.mode-btn.active i {
    color: white;
}

/* ========================================
   CATEGORY FILTER
   ======================================== */

.category-filter {
    margin-bottom: var(--spacing-md);
}

.category-filter h3 {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    font-weight: 600;
}

.category-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    overflow-x: auto;
    padding-bottom: var(--spacing-xs);
    scroll-snap-type: x mandatory;
    scrollbar-width: thin;
}

.category-chip {
    flex: 0 0 auto;
    scroll-snap-align: center;
    background: var(--surface);
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-full);
    padding: 4px var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    transition: all var(--transition-base);
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--text-primary);
}

.category-chip i {
    font-size: var(--font-size-sm);
    transition: transform var(--transition-base);
}

.category-chip:hover i {
    transform: scale(1.2);
}

.category-chips::-webkit-scrollbar {
    height: 6px;
}

.category-chips::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-full);
}

.category-chip:hover {
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.category-chip.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* ========================================
   WHEEL CONTAINER
   ======================================== */

.wheel-container {
    position: relative;
    width: 100%;
    max-width: 400px;
    margin: 0 auto var(--spacing-2xl);
    aspect-ratio: 1;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(125, 42, 231, 0.05), rgba(0, 196, 204, 0.05));
    border-radius: var(--radius-xl);
    box-shadow: 0 8px 32px rgba(125, 42, 231, 0.1);
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.wheel-container:hover {
    box-shadow: 0 12px 40px rgba(125, 42, 231, 0.15);
    transform: translateY(-4px);
}

#wheelCanvas {
    width: 100%;
    height: 100%;
    max-width: 400px;
    max-height: 400px;
    border-radius: 50%;
    box-shadow: var(--shadow-xl);
    display: block;
    /* Manter proporção 1:1 - não distorcer */
    aspect-ratio: 1;
    object-fit: contain;
    margin: 0 auto;
}

.spin-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-pink), var(--accent-yellow));
    border: 4px solid white;
    color: white;
    font-size: var(--font-size-lg);
    font-weight: 700;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    z-index: 10;
}

.spin-btn:hover:not(:disabled) {
    transform: translate(-50%, -50%) scale(1.1);
    box-shadow: var(--shadow-xl);
}

.spin-btn:active:not(:disabled) {
    transform: translate(-50%, -50%) scale(0.95);
}

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

.spin-btn[aria-busy="true"] {
    cursor: progress;
}

.spin-btn.spinning {
    animation: spinPulse 0.6s ease-in-out infinite;
}

@keyframes spinPulse {
    0% { transform: translate(-50%, -50%) scale(1); }
    100% { transform: translate(-50%, -50%) scale(1.08); }
}

/* ========================================
   QUESTION DISPLAY
   ======================================== */

.question-display {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    margin: var(--spacing-2xl) auto;
    max-width: 700px;
    box-shadow: 0 20px 60px rgba(125, 42, 231, 0.3), 0 0 0 1px rgba(255, 255, 255, 0.1);
    animation: slideUp var(--transition-slow);
    position: relative;
    overflow: hidden;
}

.question-display::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { transform: translate(-50%, -50%) rotate(0deg); }
    50% { transform: translate(-50%, -50%) rotate(180deg); }
}

.question-display.hidden {
    display: none;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.question-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.question-category-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.3);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.question-text {
    color: white;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: var(--spacing-xl);
}

.question-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
}

.action-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: none;
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-base);
    min-width: 120px;
    justify-content: center;
}

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

.action-btn.secondary {
    background: var(--surface);
    color: var(--text-primary);
    border: 2px solid var(--primary-color);
}

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

.action-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.action-btn:active {
    transform: translateY(0);
}

/* ========================================
   STATS DISPLAY
   ======================================== */

.stats-display {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.stat-item {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.stat-item i {
    font-size: var(--font-size-2xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.stat-item span {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.stat-item strong {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-color);
}

/* ========================================
   SHARE SECTION
   ======================================== */

.share-section {
    margin-bottom: var(--spacing-2xl);
}

.share-section:last-child {
    margin-bottom: 0;
}

.share-section h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.share-section h3::before {
    content: '';
    width: 4px;
    height: 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-sm);
    display: inline-block;
}

/* ========================================
   HISTORY LIST
   ======================================== */

.history-controls {
    margin-bottom: var(--spacing-lg);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
}

.history-controls .action-btn {
    min-width: 160px;
}

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

.history-item {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.history-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

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

.history-item-category {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.history-item-date {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.history-item-question {
    font-size: var(--font-size-base);
    color: var(--text-primary);
    font-weight: 500;
}

.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-secondary);
}

.empty-state i {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

/* ========================================
   FAQ
   ======================================== */

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

.faq-item {
    background: var(--surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

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

.faq-question {
    width: 100%;
    background: transparent;
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-base);
}

.faq-question i {
    margin-right: var(--spacing-sm);
    color: var(--primary-color);
    font-size: var(--font-size-base);
}

.faq-question:hover {
    background: rgba(125, 42, 231, 0.05);
}

.faq-icon {
    font-size: var(--font-size-xl);
    font-weight: 300;
    color: var(--primary-color);
    transition: transform var(--transition-base);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 var(--spacing-lg) var(--spacing-md);
    color: var(--text-secondary);
    line-height: 1.6;
    animation: expandAnswer var(--transition-base);
}

.faq-answer i {
    margin-right: var(--spacing-xs);
    color: var(--primary-color);
}

.faq-answer[hidden] {
    display: none;
}

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

/* ========================================
   BOTTOM NAVIGATION
   ======================================== */

.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: var(--z-nav);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    display: flex;
    justify-content: space-around;
    padding: var(--spacing-sm) 0;
    padding-bottom: calc(var(--spacing-sm) + env(safe-area-inset-bottom));
    box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.08);
}

.nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-xs);
    font-weight: 500;
    transition: all var(--transition-base);
    min-width: 60px;
}

.nav-item i {
    font-size: var(--font-size-xl);
}

.nav-item:hover {
    color: var(--primary-color);
}

.nav-item.active {
    color: var(--primary-color);
}

.nav-item.active i {
    transform: scale(1.1);
}

/* ========================================
   FOOTER
   ======================================== */

.app-footer {
    background: var(--surface);
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-xl) var(--spacing-md);
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.footer-content p {
    margin: var(--spacing-sm) 0;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.footer-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: all var(--transition-base);
}

.footer-links a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.footer-separator {
    color: var(--text-secondary);
    opacity: 0.5;
}

.footer-copyright {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    font-size: var(--font-size-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.footer-copyright i {
    font-size: var(--font-size-xs);
    opacity: 0.7;
}

.b20-link {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-base);
}

.b20-link:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

/* ========================================
   TOAST NOTIFICATION
   ======================================== */

.toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--text-primary);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-toast);
    opacity: 0;
    transition: all var(--transition-base);
    max-width: 90%;
    text-align: center;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.toast.success {
    background: var(--success);
}

.toast.error {
    background: var(--error);
}

.toast.warning {
    background: var(--warning);
}

/* ========================================
   MODAL
   ======================================== */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    pointer-events: none;
}

.modal.active {
    opacity: 1;
    visibility: visible;
    pointer-events: all;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--surface);
    border-radius: var(--radius-xl);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-base);
    z-index: 10000;
    pointer-events: auto;
}

.modal.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(135deg, rgba(125, 42, 231, 0.05), rgba(0, 196, 204, 0.05));
}

.modal-header h2 {
    margin: 0;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.modal-header h2 i {
    color: var(--primary-color);
    animation: rotate 2s linear infinite;
    animation-play-state: paused;
}

.modal-header h2:hover i {
    animation-play-state: running;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.modal-close {
    background: transparent;
    border: none;
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
    width: 32px;
    height: 32px;
}

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

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

.modal-section {
    margin-bottom: var(--spacing-xl);
}

.modal-section:last-child {
    margin-bottom: 0;
}

.modal-section h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.modal-section h3::before {
    content: '';
    width: 4px;
    height: 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-sm);
}

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

.modal-confirm-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    box-shadow: 0 4px 12px rgba(125, 42, 231, 0.3);
}

.modal-confirm-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(125, 42, 231, 0.4);
}

.modal-confirm-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(125, 42, 231, 0.3);
}

.modal-confirm-btn i {
    font-size: 1rem;
}

/* Ajustes para seletores dentro do modal */
.modal .mode-selector {
    margin-bottom: 0;
    gap: var(--spacing-md);
}

.modal .mode-btn {
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.modal .mode-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.modal .mode-btn:hover::before {
    left: 100%;
}

.modal .mode-btn.active {
    box-shadow: 0 4px 12px rgba(125, 42, 231, 0.3);
    transform: translateY(-2px);
}

.modal .category-filter {
    margin-bottom: 0;
}

.modal .category-chips {
    justify-content: flex-start;
    gap: var(--spacing-sm);
}

.modal .category-chip {
    transition: all 0.3s ease;
    position: relative;
}

.modal .category-chip.active {
    box-shadow: 0 2px 8px rgba(125, 42, 231, 0.25);
    transform: scale(1.05);
}

/* Garantir que botões do modal sejam clicáveis */
.modal .mode-btn,
.modal .category-chip {
    cursor: pointer;
    pointer-events: auto;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.modal .mode-btn:active,
.modal .category-chip:active {
    transform: scale(0.95);
}

.modal .mode-btn:focus-visible,
.modal .category-chip:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* ========================================
   SHARE MODAL SPECIFIC STYLES
   ======================================== */

.link-copy-container {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.link-input {
    flex: 1;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--background);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    font-family: inherit;
    outline: none;
    transition: all var(--transition-base);
}

.link-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(125, 42, 231, 0.1);
}

.copy-link-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    white-space: nowrap;
}

.copy-link-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(125, 42, 231, 0.3);
}

.copy-link-btn:active {
    transform: translateY(0);
}

.copy-link-btn i {
    font-size: var(--font-size-base);
}

.social-buttons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.social-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-lg);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    background: var(--background);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    min-height: 90px;
}

.social-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.social-btn:hover::before {
    left: 100%;
}

.social-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.social-btn:active {
    transform: translateY(-2px);
}

.social-btn i {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-xs);
}

.social-btn.whatsapp {
    color: #25D366;
    border-color: #25D366;
}

.social-btn.whatsapp:hover {
    background: #25D366;
    color: white;
}

.social-btn.facebook {
    color: #1877F2;
    border-color: #1877F2;
}

.social-btn.facebook:hover {
    background: #1877F2;
    color: white;
}

.social-btn.twitter {
    color: #1DA1F2;
    border-color: #1DA1F2;
}

.social-btn.twitter:hover {
    background: #1DA1F2;
    color: white;
}

.social-btn.linkedin {
    color: #0077B5;
    border-color: #0077B5;
}

.social-btn.linkedin:hover {
    background: #0077B5;
    color: white;
}

.social-btn.telegram {
    color: #0088CC;
    border-color: #0088CC;
}

.social-btn.telegram:hover {
    background: #0088CC;
    color: white;
}

.social-btn.email {
    color: var(--text-primary);
    border-color: var(--border-color);
}

.social-btn.email:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.question-preview {
    padding: var(--spacing-md);
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-sm);
}

.question-preview p {
    margin: 0;
    color: var(--text-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    font-style: italic;
}

/* Responsive adjustments for share modal */
@media (max-width: 600px) {
    .social-buttons {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }
    
    .social-btn {
        min-height: 80px;
        padding: var(--spacing-md);
        font-size: var(--font-size-xs);
    }
    
    .social-btn i {
        font-size: var(--font-size-xl);
    }
    
    .link-copy-container {
        flex-direction: column;
    }
    
    .copy-link-btn {
        width: 100%;
        justify-content: center;
    }
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 600px) {
    .main-content {
        padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    .welcome-section {
        padding: var(--spacing-md) 0;
        margin-bottom: var(--spacing-xl);
    }
    
    .welcome-title {
        font-size: var(--font-size-2xl);
    }
    
    .welcome-description {
        font-size: var(--font-size-base);
    }
    
    .mode-selector {
        grid-template-columns: repeat(3, 1fr);
        gap: 6px;
    }
    
    .mode-btn {
        padding: 6px 4px;
        font-size: var(--font-size-xs);
    }
    
    .mode-btn i {
        font-size: var(--font-size-base);
    }
    
    .category-filter h3 {
        font-size: var(--font-size-sm);
        margin-bottom: 6px;
    }
    
    .category-chip {
        padding: 3px var(--spacing-xs);
        font-size: 0.7rem;
    }
    
    .category-chip i {
        font-size: 0.75rem;
    }
    
    .modal-content {
        width: 95%;
        max-height: 95vh;
        padding: 0;
    }
    
    .modal-header {
        padding: var(--spacing-md);
    }
    
    .modal-header h2 {
        font-size: var(--font-size-lg);
    }
    
    .modal-body {
        padding: var(--spacing-md);
    }
    
    .modal-section {
        margin-bottom: var(--spacing-lg);
    }
    
    .modal-section h3 {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-sm);
    }
    
    .modal-footer {
        padding: var(--spacing-md);
    }
    
    .modal-confirm-btn {
        width: 100%;
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .app-logo {
        height: 30px;
        max-width: 140px;
    }
    
    .app-title {
        font-size: var(--font-size-lg);
        gap: var(--spacing-xs);
    }
    
    .question-display {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .question-text {
        font-size: var(--font-size-xl);
    }
    
    .question-actions {
        gap: var(--spacing-sm);
    }
    
    .action-btn {
        flex: 1 1 calc(50% - var(--spacing-sm));
        min-width: 0;
        font-size: var(--font-size-sm);
    }
    
    .stats-display {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    
    .history-item-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    
    .history-controls {
        justify-content: center;
    }
    
    .history-controls .action-btn {
        min-width: 140px;
        width: 100%;
        max-width: 300px;
    }
    
    .history-item-date {
        font-size: var(--font-size-xs);
        color: var(--text-secondary);
    }
    
    .nav-item {
        font-size: var(--font-size-xs);
    }
    
    .nav-item i {
        font-size: var(--font-size-lg);
    }
    
    .mode-selector {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
        overflow-x: auto;
        padding-bottom: var(--spacing-sm);
        gap: var(--spacing-sm);
    }
    
    .footer-links {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .footer-separator {
        display: none;
    }
}

@media (max-width: 768px) {
    .app-logo {
        height: 35px;
        max-width: 160px;
    }
    
    .app-title {
        font-size: var(--font-size-xl);
        gap: var(--spacing-xs);
    }
    
    .question-text {
        font-size: var(--font-size-xl);
    }
    
    .action-btn {
        min-width: auto;
        flex: 1;
    }
    
    .mode-selector {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 768px) {
    .main-content {
        padding: var(--spacing-xl) var(--spacing-lg);
    }
    
    .bottom-nav {
        padding: var(--spacing-md) 0;
    }
    
    .nav-item {
        font-size: var(--font-size-sm);
    }
}

@media (min-width: 1024px) {
    .wheel-container {
        max-width: 500px;
    }
    
    .question-text {
        font-size: var(--font-size-3xl);
    }
}

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

:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

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

@media print {
    .app-header,
    .bottom-nav,
    .app-footer,
    .action-btn {
        display: none;
    }
    
    .main-content {
        padding: 0;
    }
}