/**
 * Frases Cristãs - Main Stylesheet
 * Desenvolvido por B20 Conteúdo Digital
 * https://www.b20.com.br
 * 
 * Design: Clean & Minimal + Gradient & Vibrant + Social Feed
 * Palette: Sunset Gradient
 */

/* ========================================
   CSS CUSTOM PROPERTIES
   ======================================== */
:root {
    /* Primary Palette - Sunset Gradient */
    --primary-color: #F8B195;
    --secondary-color: #F67280;
    --accent-color: #C06C84;
    --surface-color: #6C5B7B;
    --text-color: #355C7D;
    
    /* Derived Colors */
    --primary-hover: color-mix(in srgb, var(--primary-color) 85%, black);
    --primary-light: color-mix(in srgb, var(--primary-color) 20%, white);
    --secondary-hover: color-mix(in srgb, var(--secondary-color) 85%, black);
    --accent-light: color-mix(in srgb, var(--accent-color) 20%, white);
    
    /* Background & Surface */
    --bg-color: #ffffff;
    --bg-secondary: #faf9f7;
    --card-bg: #ffffff;
    --card-border: rgba(53, 92, 125, 0.1);
    
    /* Text Colors */
    --text-primary: #355C7D;
    --text-secondary: #6C5B7B;
    --text-muted: color-mix(in srgb, var(--text-color) 60%, transparent);
    --text-light: #ffffff;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #F8B195 0%, #F67280 50%, #C06C84 100%);
    --gradient-sunset: linear-gradient(135deg, #F8B195, #F67280, #C06C84);
    --gradient-ocean: linear-gradient(135deg, #667eea, #764ba2);
    --gradient-forest: linear-gradient(135deg, #11998e, #38ef7d);
    --gradient-night: linear-gradient(135deg, #2c3e50, #4ca1af);
    --gradient-gold: linear-gradient(135deg, #f093fb, #f5576c);
    --gradient-purple: linear-gradient(135deg, #6C5B7B, #355C7D);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(53, 92, 125, 0.08);
    --shadow-md: 0 4px 12px rgba(53, 92, 125, 0.12);
    --shadow-lg: 0 8px 24px rgba(53, 92, 125, 0.16);
    --shadow-xl: 0 12px 32px rgba(53, 92, 125, 0.2);
    --shadow-glow: 0 0 20px rgba(248, 177, 149, 0.4);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Typography */
    --font-primary: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --font-size-base: 16px;
    --font-size-sm: 14px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;
    --font-size-2xl: 32px;
    --font-size-3xl: 40px;
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    --transition-bounce: 350ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Z-Index Scale */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 500;
    --z-modal-backdrop: 900;
    --z-modal: 1000;
    --z-toast: 1100;
    
    /* Layout */
    --header-height: 60px;
    --bottom-nav-height: 65px;
    --container-max: 720px;
    --safe-area-top: env(safe-area-inset-top, 0px);
    --safe-area-bottom: env(safe-area-inset-bottom, 0px);
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-color: #1a1a2e;
    --bg-secondary: #16213e;
    --card-bg: #1f2937;
    --card-border: rgba(248, 177, 149, 0.15);
    --text-primary: #f8f9fa;
    --text-secondary: #d1d5db;
    --text-muted: rgba(248, 249, 250, 0.6);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --primary-light: color-mix(in srgb, var(--primary-color) 15%, #1a1a2e);
}

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

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-primary);
    font-weight: 400;
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background-color: var(--bg-color);
    min-height: 100vh;
    padding-top: calc(var(--header-height) + var(--safe-area-top));
    padding-bottom: calc(var(--bottom-nav-height) + var(--safe-area-bottom) + 20px);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Animated Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0.03;
    z-index: -1;
    animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { opacity: 0.03; }
    50% { opacity: 0.06; }
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

a:hover {
    color: var(--primary-hover);
}

button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input,
select,
textarea {
    font-family: inherit;
    font-size: 16px; /* Prevents zoom on iOS */
}

/* Focus Styles */
:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Selection */
::selection {
    background: var(--primary-light);
    color: var(--text-primary);
}

/* 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;
}

/* Hidden */
.hidden {
    display: none !important;
}

/* ========================================
   LAYOUT
   ======================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--spacing-md);
}

.section {
    min-height: calc(100vh - var(--header-height) - var(--bottom-nav-height));
    padding-bottom: var(--spacing-xl);
}

/* ========================================
   HEADER
   ======================================== */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--bg-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-md);
    padding-top: var(--safe-area-top);
    box-shadow: var(--shadow-sm);
    z-index: var(--z-fixed);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

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

.header-logo .logo-img {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
}

.header-logo h1 {
    font-family: var(--font-display);
    font-size: var(--font-size-lg);
    font-weight: 600;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.desktop-nav {
    display: none;
}

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

.btn-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    background: var(--bg-secondary);
    transition: all var(--transition-fast);
}

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

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

/* ========================================
   BOTTOM NAVIGATION
   ======================================== */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--bottom-nav-height);
    background: var(--bg-color);
    display: flex;
    justify-content: space-around;
    align-items: center;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    z-index: var(--z-fixed);
    padding-bottom: var(--safe-area-bottom);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-muted);
    text-decoration: none;
    font-size: 11px;
    font-weight: 500;
    transition: all var(--transition-fast);
    min-width: 64px;
    min-height: 48px;
}

.nav-item i {
    font-size: 20px;
    transition: transform var(--transition-fast);
}

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

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

.nav-item:hover:not(.active) {
    color: var(--text-secondary);
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 12px 24px;
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
    text-decoration: none;
    white-space: nowrap;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-light);
    box-shadow: var(--shadow-md);
}

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

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

.btn-secondary:hover {
    background: var(--primary-light);
    border-color: var(--primary-color);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--card-border);
}

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

.btn-danger {
    background: #ef4444;
    color: white;
}

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

.btn-lg {
    padding: 16px 32px;
    font-size: var(--font-size-lg);
    border-radius: var(--radius-lg);
}

.btn-sm {
    padding: 8px 16px;
    font-size: var(--font-size-sm);
}

.btn-generate {
    width: 100%;
    margin: var(--spacing-lg) 0;
    position: relative;
    overflow: hidden;
}

.btn-generate::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;
}

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

/* Action Buttons */
.btn-action {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

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

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

.btn-action.active i {
    animation: heartBeat 0.3s ease;
}

@keyframes heartBeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.3); }
}

/* ========================================
   FORMS
   ======================================== */
.form-select {
    width: 100%;
    padding: 12px 16px;
    font-size: var(--font-size-base);
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 2px solid var(--card-border);
    border-radius: var(--radius-md);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%236C5B7B' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 20px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-range {
    width: 100%;
    height: 8px;
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    appearance: none;
    cursor: pointer;
}

.form-range::-webkit-slider-thumb {
    appearance: none;
    width: 24px;
    height: 24px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast);
}

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

.control-group {
    margin-bottom: var(--spacing-md);
}

.control-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    text-align: center;
    padding: var(--spacing-2xl) 0;
    position: relative;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-family: var(--font-display);
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: var(--line-height-tight);
}

.hero-subtitle {
    font-family: var(--font-display);
    font-size: var(--font-size-xl);
    font-weight: 500;
    font-style: italic;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-md);
}

.hero-tagline {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.hero-decoration {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    overflow: hidden;
}

.floating-icon {
    position: absolute;
    font-size: 24px;
    color: var(--primary-light);
    opacity: 0.5;
    animation: float 6s ease-in-out infinite;
}

.floating-icon:nth-child(1) {
    top: 10%;
    left: 10%;
}

.floating-icon:nth-child(2) {
    top: 20%;
    right: 15%;
    animation-delay: -2s;
}

.floating-icon:nth-child(3) {
    bottom: 20%;
    left: 20%;
    animation-delay: -4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(10deg); }
}

/* ========================================
   EMOTION CARDS
   ======================================== */
.quick-categories {
    margin: var(--spacing-xl) 0;
}

.section-title {
    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);
}

.section-title i {
    color: var(--primary-color);
}

.emotion-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
}

.emotion-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--card-bg);
    border: 2px solid var(--card-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    cursor: pointer;
    min-height: 80px;
}

.emotion-card i {
    font-size: 24px;
    color: var(--primary-color);
    transition: transform var(--transition-fast);
}

.emotion-card span {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

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

.emotion-card:hover i {
    transform: scale(1.2);
}

.emotion-card:active {
    transform: translateY(-2px);
}

/* ========================================
   PHRASE CARDS
   ======================================== */
.phrases-feed {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.phrase-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--card-border);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.phrase-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

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

.phrase-card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.phrase-category-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 12px;
    background: var(--primary-light);
    color: var(--primary-color);
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
}

.phrase-text {
    font-family: var(--phrase-font-family, var(--font-display));
    font-size: var(--phrase-font-size, var(--font-size-lg));
    font-weight: 500;
    line-height: var(--line-height-relaxed);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-style: italic;
    word-break: break-word;
    hyphens: auto;
}

.phrase-reference {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    font-style: normal;
}

.phrase-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--card-border);
}

.phrase-date {
    font-size: 12px;
    color: var(--text-muted);
}

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

.phrase-action-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    color: var(--text-muted);
    transition: all var(--transition-fast);
}

.phrase-action-btn:hover {
    background: var(--primary-light);
    color: var(--primary-color);
}

.phrase-action-btn.favorited {
    color: var(--secondary-color);
}

/* Large Phrase Card (Generator) */
.phrase-card-large {
    background: var(--card-bg);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--card-border);
    text-align: center;
    position: relative;
    overflow: hidden;
    animation: fadeInUp 0.5s ease;
}

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

.phrase-card-large::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: var(--gradient-primary);
}

.phrase-card-large .phrase-text {
    font-size: calc(var(--phrase-font-size, 20px) * 1.4);
    margin-bottom: var(--spacing-md);
}

.phrase-card-large .phrase-reference {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-lg);
}

.phrase-card-actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--card-border);
}

/* ========================================
   GENERATOR CONTROLS
   ======================================== */
.generator-controls {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

/* ========================================
   HISTORY LIST
   ======================================== */
.phrase-history {
    margin-top: var(--spacing-2xl);
}

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

.history-item {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.history-item:hover {
    background: var(--primary-light);
}

.history-item-content {
    flex: 1;
    min-width: 0;
}

.history-item-text {
    font-family: var(--font-display);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    margin-bottom: 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.history-item-meta {
    font-size: 12px;
    color: var(--text-muted);
}

.history-item-actions {
    display: flex;
    gap: var(--spacing-xs);
}

/* ========================================
   FAVORITES
   ======================================== */
.favorites-filter {
    display: flex;
    gap: var(--spacing-sm);
    overflow-x: auto;
    padding-bottom: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    -webkit-overflow-scrolling: touch;
}

.filter-btn {
    padding: 8px 16px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    white-space: nowrap;
    transition: all var(--transition-fast);
}

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

.filter-btn:hover:not(.active) {
    background: var(--primary-light);
    color: var(--primary-color);
}

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

/* ========================================
   SETTINGS
   ======================================== */
.page-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.page-title i {
    color: var(--primary-color);
}

.settings-group {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--card-border);
}

.settings-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.settings-title i {
    color: var(--primary-color);
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--card-border);
    gap: var(--spacing-md);
}

.setting-item .form-select {
    width: auto;
    max-width: 50%;
}

.setting-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.setting-info {
    flex: 1;
    min-width: 0;
}

.setting-label {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.setting-description {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* Theme Toggle Group */
.theme-toggle-group {
    display: flex;
    gap: var(--spacing-xs);
    background: var(--bg-secondary);
    padding: 4px;
    border-radius: var(--radius-md);
}

.theme-option {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-fast);
}

.theme-option.active {
    background: var(--gradient-primary);
    color: white;
}

.theme-option:hover:not(.active) {
    color: var(--primary-color);
}

/* Font Size Control */
.font-size-control {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.size-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

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

.size-display {
    min-width: 50px;
    text-align: center;
    font-weight: 600;
    color: var(--text-primary);
}

/* Gradient Options */
.gradient-options {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.gradient-option {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    border: 3px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.gradient-option:hover {
    transform: scale(1.1);
}

.gradient-option.active {
    border-color: var(--text-primary);
    box-shadow: var(--shadow-md);
}

/* ========================================
   FAQ
   ======================================== */
.faq-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.faq-item {
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-weight: 500;
    text-align: left;
    transition: all var(--transition-fast);
}

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

.faq-icon {
    transition: transform var(--transition-normal);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    padding: var(--spacing-md);
    background: var(--card-bg);
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
    animation: slideDown 0.3s ease;
}

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

/* ========================================
   ABOUT SECTION
   ======================================== */
.about-content {
    text-align: center;
    color: var(--text-secondary);
}

.about-content p {
    margin-bottom: var(--spacing-sm);
}

.about-developer {
    margin-top: var(--spacing-md);
}

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

.b20-link:hover {
    text-decoration: underline;
}

/* ========================================
   EMPTY STATES
   ======================================== */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-lg);
    color: var(--text-muted);
}

.empty-state i {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.empty-state h4 {
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.empty-state p {
    margin-bottom: var(--spacing-lg);
}

/* ========================================
   MODALS
   ======================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    position: relative;
    background: var(--card-bg);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: modalSlideUp 0.3s ease;
}

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

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

.modal-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.modal-header h3 i {
    color: var(--primary-color);
}

.btn-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    color: var(--text-muted);
    transition: all var(--transition-fast);
}

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

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

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

/* Image Modal */
.image-preview-container {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
}

.image-preview-container canvas {
    width: 100%;
    height: auto;
    display: block;
}

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

.modal-gradients {
    justify-content: center;
}

/* Share Modal */
.modal-share .modal-content {
    max-width: 400px;
}

.share-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.share-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.share-option i {
    font-size: 24px;
}

.share-option span {
    font-size: var(--font-size-sm);
}

.share-option:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
}

#share-whatsapp:hover { color: #25D366; }
#share-twitter:hover { color: #1DA1F2; }
#share-facebook:hover { color: #1877F2; }
#share-telegram:hover { color: #0088cc; }

/* Confirm Modal */
.modal-confirm .modal-content {
    max-width: 350px;
    text-align: center;
}

.modal-confirm .modal-header {
    justify-content: center;
    border-bottom: none;
    padding-bottom: 0;
}

.modal-confirm .modal-header h3 {
    color: #ef4444;
}

.modal-confirm .modal-body {
    padding-top: var(--spacing-sm);
}

.modal-confirm .modal-footer {
    justify-content: center;
    border-top: none;
}

/* ========================================
   TOAST NOTIFICATIONS
   ======================================== */
.toast-container {
    position: fixed;
    bottom: calc(var(--bottom-nav-height) + var(--spacing-md) + var(--safe-area-bottom));
    left: 50%;
    transform: translateX(-50%);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    pointer-events: none;
}

.toast {
    background: var(--text-primary);
    color: var(--bg-color);
    padding: 12px 24px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    animation: toastSlideUp 0.3s ease;
    pointer-events: auto;
}

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

.toast.toast-success {
    background: #10b981;
}

.toast.toast-error {
    background: #ef4444;
}

.toast.toast-warning {
    background: #f59e0b;
}

.toast.hiding {
    animation: toastSlideDown 0.3s ease forwards;
}

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

/* ========================================
   SKELETON LOADING
   ======================================== */
.skeleton {
    background: linear-gradient(90deg, var(--bg-secondary) 25%, var(--card-border) 50%, var(--bg-secondary) 75%);
    background-size: 200% 100%;
    animation: skeletonLoading 1.5s infinite;
    border-radius: var(--radius-sm);
}

@keyframes skeletonLoading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-text {
    height: 16px;
    margin-bottom: var(--spacing-sm);
}

.skeleton-text.short {
    width: 60%;
}

.skeleton-title {
    height: 24px;
    width: 80%;
    margin-bottom: var(--spacing-md);
}

/* ========================================
   FOOTER
   ======================================== */
.app-footer {
    text-align: center;
    padding: var(--spacing-lg);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xl);
}

.app-footer p {
    margin-bottom: var(--spacing-xs);
}

.app-footer a {
    color: var(--primary-color);
    transition: color var(--transition-fast);
}

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

/* ========================================
   UTILITY CLASSES
   ======================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }

.w-full { width: 100%; }

/* Font Style Classes */
.font-elegant {
    font-family: var(--font-display);
}

.font-modern {
    font-family: var(--font-primary);
}

.font-classic {
    font-family: Georgia, 'Times New Roman', serif;
}