/**
 * Bíblia ou Fake? - Stylesheet
 * Desenvolvido por B20 Conteúdo Digital
 * https://www.b20.com.br
 */

/* ===== CSS VARIABLES ===== */
:root {
    /* Palette Colors - GoAdopt / Antigravity Theme */
    --bg-canvas: #0B0E11;
    --bg-surface: #1A1F25;
    --primary-color: #00DD80;
    --primary-hover: #00C270;
    --secondary-color: #282828;
    --accent-color: #00DD80;
    --surface-color: rgba(26, 31, 37, 0.8);
    --text-color: #FFFFFF;
    
    /* Automatic Variations */
    --primary-light: rgba(0, 221, 128, 0.1);
    --bg-color: var(--bg-canvas);
    --bg-secondary: var(--bg-surface);
    --text-muted: #94A3B8;
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow-glow: rgba(0, 221, 128, 0.2);
    --btn-text-color: #000000;
    
    /* Layout */
    --border-radius: 16px;
    --border-radius-sm: 8px;
    --spacing-unit: 8px;
    --transition: all 0.3s ease-out;
    --header-height: 70px;
    --bottom-nav-height: 70px;
    
    /* Shadows - Antigravity Weightlessness */
    --shadow-sm: 0 4px 10px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.4);
    --shadow-neon: 0 4px 15px var(--shadow-glow);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-serif: 'Inter', sans-serif;
}

/* Light Mode */
[data-theme="light"] {
    --bg-canvas: #F8FAFC;
    --bg-surface: #FFFFFF;
    --primary-color: #00A65F;
    --primary-hover: #00874A;
    --secondary-color: #E2E8F0;
    --surface-color: rgba(255, 255, 255, 0.9);
    --text-color: #0F172A;
    --text-muted: #64748B;
    --border-color: rgba(15, 23, 42, 0.1);
    --shadow-glow: rgba(0, 166, 95, 0.2);
    --btn-text-color: #FFFFFF;
    --bg-color: var(--bg-canvas);
    --bg-secondary: var(--bg-surface);
}

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: clamp(14px, 2.5vw, 18px);
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    padding-top: var(--header-height);
    padding-bottom: var(--bottom-nav-height);
    min-height: 100vh;
    overflow-x: hidden;
}

@media (min-width: 900px) {
    body {
        padding-bottom: 0;
    }
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: calc(var(--spacing-unit) * 2);
}

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

a:hover {
    opacity: 0.8;
}

/* ===== HEADER ===== */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--surface-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 calc(var(--spacing-unit) * 3);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
}

.header-logo {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 1.5);
}

.header-logo i {
    font-size: 1.8rem;
    color: var(--primary-color);
    filter: drop-shadow(0 0 8px var(--shadow-glow));
}

.header-logo h1 {
    font-size: 1.4rem;
    margin: 0;
    color: var(--text-color);
    font-weight: 800;
    letter-spacing: -0.02em;
}

.header-logo a {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 1.5);
    color: var(--text-color);
}

/* Desktop Navigation */
.desktop-nav {
    display: none;
}

@media (min-width: 900px) {
    .desktop-nav {
        display: flex;
        gap: var(--spacing-unit);
    }
    
    .desktop-nav .nav-link {
        display: flex;
        align-items: center;
        gap: calc(var(--spacing-unit) * 1);
        padding: calc(var(--spacing-unit) * 1) calc(var(--spacing-unit) * 2);
        border-radius: var(--border-radius);
        color: var(--text-color);
        transition: var(--transition);
        white-space: nowrap;
    }
    
    .desktop-nav .nav-link:hover,
    .desktop-nav .nav-link.active {
        background: var(--primary-color);
        color: white;
    }
    
    .desktop-nav .nav-link i {
        display: none;
    }
}

.header-actions {
    display: flex;
    gap: calc(var(--spacing-unit) * 1);
}

.btn-icon {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--secondary-color);
    color: var(--text-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.btn-icon:hover {
    transform: scale(1.1);
    background: var(--primary-color);
    color: white;
}

.lang-text {
    font-size: 0.75rem;
    font-weight: 600;
    margin-left: 2px;
}

/* ===== BOTTOM NAVIGATION (Mobile Only) ===== */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--bottom-nav-height);
    background: var(--surface-color);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    justify-content: space-around;
    align-items: center;
    box-shadow: 0 -10px 25px rgba(0, 0, 0, 0.3);
    border-top: 1px solid var(--border-color);
    z-index: 1000;
    padding-bottom: env(safe-area-inset-bottom, 0);
}

.bottom-nav .nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: calc(var(--spacing-unit) * 1) calc(var(--spacing-unit) * 2);
    color: var(--text-muted);
    font-size: 0.75rem;
    transition: var(--transition);
    min-width: 64px;
    min-height: 48px;
}

.bottom-nav .nav-item i {
    font-size: 1.25rem;
    transition: var(--transition);
}

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

.bottom-nav .nav-item.active i {
    transform: scale(1.15);
}

@media (min-width: 900px) {
    .bottom-nav {
        display: none !important;
    }
}

/* ===== MAIN CONTENT ===== */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: calc(var(--spacing-unit) * 3) calc(var(--spacing-unit) * 2);
}

.section {
    display: none;
    scroll-margin-top: 100px;
}

.section.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

/* ===== HERO SECTION ===== */
.hero-section {
    text-align: center;
    padding: calc(var(--spacing-unit) * 4) 0;
}

.hero-title {
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    color: var(--text-color);
    margin-bottom: calc(var(--spacing-unit) * 2);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: calc(var(--spacing-unit) * 2);
    margin-top: calc(var(--spacing-unit) * 4);
}

.stat-card {
    background: var(--bg-secondary);
    padding: calc(var(--spacing-unit) * 3);
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.stat-card i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-color);
}

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

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: calc(var(--spacing-unit) * 1);
    padding: 14px 24px;
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    min-height: 48px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.btn:active {
    transform: translateY(1px);
}

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

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

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

.btn-success {
    background: #10B981;
    color: white;
}

.btn-danger {
    background: #EF4444;
    color: white;
}

.btn-large {
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 4);
    font-size: 1.1rem;
}

/* ===== FEATURES SECTION ===== */
.features-section {
    margin: calc(var(--spacing-unit) * 6) 0;
}

.features-section h3 {
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: calc(var(--spacing-unit) * 3);
}

.feature-card {
    background: var(--bg-surface);
    padding: calc(var(--spacing-unit) * 4);
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    will-change: transform;
}

.feature-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.feature-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: calc(var(--spacing-unit) * 2);
    filter: drop-shadow(0 0 5px var(--shadow-glow));
}

.feature-card h4 {
    margin-bottom: calc(var(--spacing-unit) * 1);
    font-weight: 800;
}

.feature-card p {
    color: var(--text-muted);
    margin: 0;
    line-height: 1.6;
}

/* ===== CATEGORIES SECTION ===== */
.categories-section {
    margin: calc(var(--spacing-unit) * 6) 0;
}

.categories-section h3 {
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: calc(var(--spacing-unit) * 2);
}

.category-card {
    background: var(--bg-secondary);
    padding: calc(var(--spacing-unit) * 3);
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: calc(var(--spacing-unit) * 1);
    cursor: pointer;
    transition: var(--transition);
}

.category-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.category-card i {
    font-size: 2rem;
    color: var(--primary-color);
}

/* ===== CATEGORIES PAGE ===== */
.categories-page-container {
    padding: calc(var(--spacing-unit) * 2) 0;
    text-align: center;
}

.categories-subtitle {
    color: var(--text-muted);
    margin-bottom: calc(var(--spacing-unit) * 4);
    font-size: 1.1rem;
}

.categories-page-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: calc(var(--spacing-unit) * 3);
    margin-top: calc(var(--spacing-unit) * 3);
}

.category-page-card {
    background: var(--bg-surface);
    padding: calc(var(--spacing-unit) * 4);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: calc(var(--spacing-unit) * 2);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.category-page-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.category-icon {
    width: 60px;
    height: 60px;
    background: var(--bg-secondary);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.category-count {
    background: var(--bg-secondary);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-color);
    font-weight: 600;
}

.category-page-card button {
    margin-top: auto;
    width: 100%;
}

/* ===== FAQ SECTION ===== */
.faq-section {
    margin: calc(var(--spacing-unit) * 6) 0;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.faq-section h3 {
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.faq-container {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 2);
}

.faq-item {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: calc(var(--spacing-unit) * 2);
    background: none;
    border: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-color);
    text-align: left;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--primary-light);
}

.faq-icon {
    font-size: 1.25rem;
    color: var(--primary-color);
    transition: var(--transition);
}

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

.faq-answer {
    padding: 0 calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 2);
    color: var(--text-muted);
    animation: slideDown 0.3s ease;
}

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

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

/* ===== QUIZ SECTION ===== */
.quiz-container {
    max-width: 700px;
    margin: 0 auto;
}

.quiz-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: calc(var(--spacing-unit) * 3);
    padding: calc(var(--spacing-unit) * 2);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
}

.quiz-progress {
    font-size: 1.1rem;
    font-weight: 600;
}

.quiz-score {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 1);
    color: var(--primary-color);
    font-weight: 700;
}

.phrase-card {
    background: var(--bg-surface);
    padding: calc(var(--spacing-unit) * 4);
    border-radius: var(--border-radius);
    margin-bottom: calc(var(--spacing-unit) * 3);
    min-height: 250px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    transform-style: preserve-3d;
    perspective: 1000px;
    will-change: transform;
}

.phrase-text {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    line-height: 1.6;
    color: var(--text-color);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.phrase-difficulty {
    display: inline-block;
    padding: calc(var(--spacing-unit) * 0.5) calc(var(--spacing-unit) * 2);
    background: var(--primary-light);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.quiz-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: calc(var(--spacing-unit) * 2);
}

.quiz-result {
    background: var(--bg-secondary);
    padding: calc(var(--spacing-unit) * 4);
    border-radius: var(--border-radius);
    text-align: center;
}

.result-icon {
    font-size: 4rem;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.result-message {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.result-explanation {
    color: var(--text-muted);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.result-reference {
    background: var(--primary-light);
    padding: calc(var(--spacing-unit) * 2);
    border-radius: var(--border-radius);
    margin-bottom: calc(var(--spacing-unit) * 3);
    font-weight: 600;
    color: var(--primary-color);
}

/* ===== RANKING SECTION ===== */
.ranking-container {
    max-width: 800px;
    margin: 0 auto;
}

.ranking-tabs {
    display: flex;
    gap: calc(var(--spacing-unit) * 1);
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.tab-btn {
    flex: 1;
    padding: calc(var(--spacing-unit) * 1.5);
    background: var(--bg-secondary);
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: calc(var(--spacing-unit) * 1);
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-color);
    font-weight: 600;
}

.tab-btn:hover,
.tab-btn.active {
    border-color: var(--primary-color);
    background: var(--primary-light);
    color: var(--text-color);
}

.ranking-list {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: calc(var(--spacing-unit) * 2);
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.user-rank-card {
    background: var(--bg-secondary);
    padding: calc(var(--spacing-unit) * 3);
    border-radius: var(--border-radius);
}

.rank-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: calc(var(--spacing-unit) * 2);
    margin-top: calc(var(--spacing-unit) * 2);
}

.rank-stat {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 1.5);
}

.rank-stat i {
    font-size: 2rem;
    color: var(--primary-color);
}

.rank-value {
    font-size: 1.5rem;
    font-weight: 700;
}

.rank-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ===== DAILY CHALLENGE ===== */
.daily-container {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.daily-header {
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.daily-header i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.daily-timer {
    background: var(--bg-secondary);
    padding: calc(var(--spacing-unit) * 3);
    border-radius: var(--border-radius);
    margin-bottom: calc(var(--spacing-unit) * 3);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: calc(var(--spacing-unit) * 1);
    font-size: 1.5rem;
    font-weight: 700;
}

.daily-status {
    background: var(--bg-secondary);
    padding: calc(var(--spacing-unit) * 4);
    border-radius: var(--border-radius);
    margin-bottom: calc(var(--spacing-unit) * 3);
}

/* ===== FOOTER ===== */
.app-footer {
    text-align: center;
    padding: calc(var(--spacing-unit) * 4) calc(var(--spacing-unit) * 2);
    padding-bottom: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom, 0px) + 20px);
    background: var(--bg-secondary);
    margin-top: calc(var(--spacing-unit) * 6);
}

@media (min-width: 900px) {
    .app-footer {
        padding-bottom: calc(var(--spacing-unit) * 4);
    }
}

.app-footer p {
    margin-bottom: calc(var(--spacing-unit) * 1);
    color: var(--text-muted);
}

.b20-link {
    color: var(--primary-color);
    font-weight: 600;
    transition: var(--transition);
}

.b20-link:hover {
    text-decoration: underline;
    transform: scale(1.05);
}

/* ===== TOAST NOTIFICATION ===== */
.toast {
    position: fixed;
    top: calc(var(--header-height) + var(--spacing-unit) * 2);
    bottom: auto;
    left: 50%;
    transform: translateX(-50%) translateY(-100px);
    background: var(--text-color);
    color: var(--bg-color);
    padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 3);
    border-radius: var(--border-radius);
    opacity: 0;
    transition: var(--transition);
    z-index: 2000;
    max-width: 90%;
    text-align: center;
    pointer-events: none; /* Permite clicar através do toast */
}

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

/* ===== UTILITY CLASSES ===== */
.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;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 767px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .phrase-text {
        font-size: 1.25rem;
    }
    
    .phrase-card {
        padding: 20px;
        min-height: 180px;
        max-height: 45vh;
        overflow-y: auto;
        margin-bottom: 15px;
    }
    
    .quiz-actions {
        grid-template-columns: 1fr 1fr; /* Keep buttons side-by-side to save vertical space */
        gap: 10px;
    }
    
    .btn-large {
        padding: 12px;
        font-size: 1rem;
    }
    
    .quiz-header {
        margin-bottom: 15px;
        padding: 10px 15px;
    }
    
    /* Game Mode without relying on :has() for older iOS/Android support */
    #quiz.active {
        height: calc(100vh - 70px);
        height: calc(100dvh - 70px);
        display: flex;
        flex-direction: column;
        justify-content: flex-start;
        padding-top: 15px;
        overflow-y: auto;
    }
}

@media (max-width: 480px) {
    .header-logo h1 {
        font-size: 1.1rem;
    }
    .header-logo i {
        font-size: 1.4rem;
    }
    .btn-icon {
        width: 36px;
        height: 36px;
    }
    .stat-value {
        font-size: 1.5rem;
    }
}

@media (min-width: 1024px) {
    .main-content {
        padding: calc(var(--spacing-unit) * 4) calc(var(--spacing-unit) * 3);
    }
}