/**
 * Maratona Bíblica - Styles (Antigravity Premium Edition)
 * Desenvolvido por B20 Conteúdo Digital
 * https://www.b20.com.br
 */

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

/* ===== CSS VARIABLES (Premium Visual Identity) ===== */
:root {
    /* Primary Colors: Vibrant Neon Green / Deep Obsidian */
    --primary-color: #00DD80;
    --primary-dark: #00B166;
    --bg-color: #0B0E14;
    --bg-surface: rgba(20, 25, 35, 0.7);
    --bg-surface-elevated: rgba(30, 38, 50, 0.85);
    
    /* Text Colors */
    --text-primary: #FFFFFF;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    
    /* Semantic Colors */
    --energy-orange: #FF6B00;
    --speed-blue: #0A84FF;
    --success-green: #34D399;
    --danger-red: #FF453A;
    --warning-yellow: #FFD60A;
    
    /* Medal Colors */
    --bronze: #CD7F32;
    --silver: #E2E8F0;
    --gold: #FFD700;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Border Radius & Borders */
    --radius-sm: 12px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-full: 9999px;
    --border-subtle: 1px solid rgba(255, 255, 255, 0.08);
    --border-active: 1px solid rgba(0, 221, 128, 0.3);
    
    /* Typography */
    --font-ui: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-bible: 'Lora', Georgia, serif;
    
    /* Z-Index */
    --z-dropdown: 100;
    --z-sticky: 500;
    --z-fixed: 1000;
    --z-modal-backdrop: 1500;
    --z-modal: 2000;
    --z-toast: 2500;
}

/* Light Mode (Optional, default is dark for premium look) */
[data-theme="light"] {
    --bg-color: #F8FAFC;
    --bg-surface: rgba(255, 255, 255, 0.8);
    --bg-surface-elevated: #FFFFFF;
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-muted: #94A3B8;
    --border-subtle: 1px solid rgba(0, 0, 0, 0.08);
    --primary-color: #00B166;
}

[data-theme="light"] .app-header {
    background: rgba(255, 255, 255, 0.9);
}

[data-theme="light"] .header-logo h1 {
    background: linear-gradient(to right, #0F172A, #475569);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Glassmorphism Utilities */
.glass {
    background: var(--bg-surface);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: var(--border-subtle);
}

.glass-elevated {
    background: var(--bg-surface-elevated);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: var(--border-subtle);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* ===== BASE STYLES ===== */
html {
    font-size: clamp(14px, 2.5vw, 16px);
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-ui);
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(0, 221, 128, 0.03), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(10, 132, 255, 0.03), transparent 25%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    padding-top: 80px;
    padding-bottom: env(safe-area-inset-bottom, 0);
    -webkit-font-smoothing: antialiased;
}

@media (max-width: 767px) {
    body {
        padding-bottom: calc(90px + env(safe-area-inset-bottom, 0)); /* Extra space for Admob + Nav */
    }
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.35rem; }
h4 { font-size: 1.15rem; }

p { color: var(--text-secondary); }
a { color: var(--primary-color); text-decoration: none; transition: 0.3s ease; }
a:hover { filter: brightness(1.2); }

/* ===== HEADER ===== */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-lg);
    z-index: var(--z-fixed);
    background: rgba(11, 14, 20, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: var(--border-subtle);
}

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

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary-color), #00F0FF);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #111;
    font-size: 1.1rem;
    box-shadow: 0 0 20px rgba(0, 221, 128, 0.4);
}

.header-logo h1 {
    font-size: 1.25rem;
    font-weight: 800;
    background: linear-gradient(to right, #FFF, #A0AAB0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.desktop-nav { display: none; }

@media (min-width: 768px) {
    .desktop-nav {
        display: flex;
        gap: var(--spacing-sm);
    }
    
    .desktop-nav .nav-link {
        display: flex;
        align-items: center;
        gap: var(--spacing-xs);
        padding: var(--spacing-sm) var(--spacing-md);
        border-radius: var(--radius-full);
        color: var(--text-secondary);
        font-weight: 600;
        font-size: 0.9rem;
        transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    .desktop-nav .nav-link:hover {
        color: var(--text-primary);
        background: rgba(255, 255, 255, 0.05);
    }
    
    .desktop-nav .nav-link.active {
        background: rgba(0, 221, 128, 0.1);
        color: var(--primary-color);
        box-shadow: inset 0 0 0 1px rgba(0, 221, 128, 0.3);
    }
}

.header-actions .btn-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: 0.3s;
}

.header-actions .btn-icon:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* ===== BOTTOM NAVIGATION ===== */
.bottom-nav {
    position: fixed;
    bottom: 15px; /* Floating space above AdMob */
    left: 15px;
    right: 15px;
    height: 65px;
    background: rgba(20, 25, 35, 0.9);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: var(--border-subtle);
    border-radius: var(--radius-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--spacing-sm);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    z-index: var(--z-fixed);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    color: var(--text-muted);
    font-size: 0.65rem;
    font-weight: 600;
    transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    height: 100%;
}

.nav-item i {
    font-size: 1.25rem;
    margin-bottom: 2px;
    transition: 0.3s;
}

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

.nav-item.active i {
    transform: translateY(-2px) scale(1.1);
    text-shadow: 0 0 15px rgba(0, 221, 128, 0.4);
}

.nav-item-fab {
    flex: 0 0 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    transform: translateY(-20px);
    color: #111 !important;
    box-shadow: 0 10px 25px rgba(0, 221, 128, 0.4);
    border: 4px solid var(--bg-color);
}

.nav-item-fab i { font-size: 1.5rem; margin: 0; }
.nav-item-fab span { display: none; }

@media (min-width: 768px) {
    .bottom-nav { display: none !important; }
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0 var(--spacing-lg);
    height: 48px;
    font-family: var(--font-ui);
    font-size: 0.95rem;
    font-weight: 700;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn:disabled { opacity: 0.5; pointer-events: none; }

.btn-primary {
    background: var(--primary-color);
    color: #000;
    box-shadow: 0 4px 15px rgba(0, 221, 128, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 25px rgba(0, 221, 128, 0.5);
    background: #00FF95;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: var(--border-subtle);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.btn-success { background: var(--success-green); color: #000; }
.btn-danger { background: rgba(255, 69, 58, 0.1); color: var(--danger-red); border: 1px solid rgba(255, 69, 58, 0.3); }
.btn-danger:hover { background: rgba(255, 69, 58, 0.2); }
.btn-text { background: transparent; color: var(--text-secondary); }
.btn-text:hover { color: var(--text-primary); }

.btn-lg { height: 56px; font-size: 1.05rem; padding: 0 var(--spacing-xl); }
.btn-sm { height: 36px; font-size: 0.8rem; padding: 0 var(--spacing-md); }

/* ===== LAYOUT & CARDS ===== */
.container {
    width: 100%;
    max-width: 900px;
    padding: 0 var(--spacing-md) var(--spacing-xl);
    margin: 0 auto;
}

.section {
    display: none;
    animation: fadeUp 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    opacity: 0;
    transform: translateY(20px);
}

.section.active { display: block; }

@keyframes fadeUp {
    to { opacity: 1; transform: translateY(0); }
}

.section-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin: var(--spacing-xl) 0 var(--spacing-md);
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 4px;
}

/* Home Section */
.welcome-card {
    background: linear-gradient(135deg, rgba(30, 41, 59, 1), rgba(15, 23, 42, 1));
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    position: relative;
    overflow: hidden;
    margin-bottom: var(--spacing-2xl);
    border: 1px solid rgba(255, 255, 255, 0.05);
    color: white;
}
.welcome-glow { position: absolute; width: 150px; height: 150px; background: var(--primary-color); filter: blur(80px); opacity: 0.15; top: -50px; right: -50px; border-radius: 50%; pointer-events: none; }
.welcome-content { position: relative; z-index: 1; }
.welcome-content h2 { margin-bottom: 8px; font-size: 1.8rem; color: white !important; }
.welcome-content p { opacity: 0.8; max-width: 80%; color: white !important; }

.welcome-stats {
    display: flex; justify-content: space-between; margin-top: var(--spacing-lg); padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1); position: relative; z-index: 1;
}
.welcome-stats .stat-item { text-align: center; flex: 1; }
.welcome-stats .stat-value { display: block; font-size: 1.5rem; font-weight: 800; font-family: 'Outfit', sans-serif; color: white !important; }
.welcome-stats .stat-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 1px; opacity: 0.7; color: white !important; }

.welcome-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    background: rgba(0, 221, 128, 0.1);
    color: var(--primary-color);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 1px solid rgba(0, 221, 128, 0.2);
}

.welcome-content h2 { margin-bottom: 8px; font-size: 1.8rem; }

.welcome-stats {
    display: flex;
    justify-content: space-between;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-md);
    border-top: var(--border-subtle);
}

.stat-item { text-align: center; }
.stat-value { display: block; font-size: 1.75rem; font-weight: 800; color: var(--text-primary); }
.stat-label { display: block; font-size: 0.75rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.05em; font-weight: 600; margin-top: 4px; }

/* Action Cards */
.quick-actions {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

@media (min-width: 500px) {
    .quick-actions { grid-template-columns: repeat(3, 1fr); }
}

.action-card {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: var(--spacing-lg);
    background: var(--bg-surface);
    border: var(--border-subtle);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: 0.3s;
    text-align: left;
    position: relative;
    overflow: hidden;
}

.action-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, transparent 100%);
    opacity: 0;
    transition: 0.3s;
}

.action-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.action-card:hover::before { opacity: 1; }

.action-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
}

.action-icon.energy { background: rgba(255, 107, 0, 0.1); color: var(--energy-orange); border: 1px solid rgba(255, 107, 0, 0.2); }
.action-icon.speed { background: rgba(10, 132, 255, 0.1); color: var(--speed-blue); border: 1px solid rgba(10, 132, 255, 0.2); }
.action-icon.success { background: rgba(52, 211, 153, 0.1); color: var(--success-green); border: 1px solid rgba(52, 211, 153, 0.2); }

.action-info h4 { font-size: 1.05rem; margin-bottom: 4px; }
.action-info p { font-size: 0.8rem; color: var(--text-muted); line-height: 1.4; }

/* Progress Cards */
.progress-overview {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}
@media (min-width: 500px) { .progress-overview { grid-template-columns: 1fr 1fr; } }

.progress-card {
    background: var(--bg-surface);
    border: var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

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

.progress-title { font-weight: 700; font-size: 1rem; }
.progress-percent { font-weight: 800; color: var(--primary-color); }

.progress-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: 8px;
}
.progress-bar.large { height: 10px; }

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-dark), var(--primary-color));
    border-radius: var(--radius-full);
    transition: width 1s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 0 10px rgba(0, 221, 128, 0.5);
}

.progress-detail { font-size: 0.8rem; color: var(--text-muted); }

/* Activity & History Lists */
.activity-list, .history-list, .settings-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.activity-item, .history-item, .setting-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-surface);
    border: var(--border-subtle);
    border-radius: var(--radius-md);
    transition: 0.3s;
}

.activity-icon, .history-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.1rem;
}

.history-icon { background: rgba(52, 211, 153, 0.1); color: var(--success-green); }

.activity-info, .history-info { flex: 1; min-width: 0; }
.activity-title, .history-title { font-weight: 600; font-size: 0.95rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--text-primary); }
.activity-meta, .history-meta { font-size: 0.8rem; color: var(--text-muted); margin-top: 2px; }
.activity-time, .history-date { font-size: 0.8rem; color: var(--text-muted); font-weight: 500; }

.setting-item { cursor: pointer; justify-content: space-between; }
.setting-item:hover { background: rgba(255, 255, 255, 0.03); transform: scale(1.01); }
.setting-info { display: flex; align-items: center; gap: var(--spacing-md); }
.setting-info i { width: 24px; text-align: center; color: var(--text-muted); font-size: 1.25rem; }
.setting-title { font-weight: 600; font-size: 1rem; color: var(--text-primary); }
.setting-desc { font-size: 0.8rem; color: var(--text-muted); }

/* Toggle */
.toggle { position: relative; display: inline-block; width: 44px; height: 24px; }
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
    position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0;
    background-color: var(--text-muted);
    transition: .4s;
    border-radius: 24px;
}
.toggle-slider:before {
    position: absolute; content: ""; height: 18px; width: 18px; left: 3px; bottom: 3px;
    background-color: white; transition: .4s; border-radius: 50%;
}
.toggle input:checked + .toggle-slider { background-color: var(--primary-color); }
.toggle input:checked + .toggle-slider:before { transform: translateX(20px); }

/* Empty States */
.empty-state { text-align: center; padding: var(--spacing-2xl) var(--spacing-md); }
.empty-state > i { font-size: 3.5rem; color: rgba(255, 255, 255, 0.1); margin-bottom: var(--spacing-md); }
[data-theme="light"] .empty-state > i { color: rgba(0, 0, 0, 0.1); }
.empty-state h4 { margin-bottom: 8px; }
.empty-state p { margin-bottom: var(--spacing-lg); max-width: 300px; margin-inline: auto; }

/* ===== CHALLENGES ===== */
.filter-tabs {
    display: flex; gap: var(--spacing-sm); overflow-x: auto; padding-bottom: var(--spacing-md);
    margin-bottom: var(--spacing-md); -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}
.filter-tabs::-webkit-scrollbar { display: none; }

.filter-tab {
    padding: 8px 20px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    white-space: nowrap;
    transition: 0.3s;
}
.filter-tab:hover { background: rgba(255, 255, 255, 0.05); color: var(--text-primary); }
.filter-tab.active {
    background: var(--text-primary);
    border-color: var(--text-primary);
    color: var(--bg-color);
}

.challenges-grid {
    display: grid; grid-template-columns: 1fr; gap: var(--spacing-md);
}
@media (min-width: 500px) { .challenges-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 768px) { .challenges-grid { grid-template-columns: repeat(3, 1fr); } }

.challenge-card {
    background: var(--bg-surface);
    border: var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}
.challenge-card:hover { transform: translateY(-5px); border-color: rgba(255, 255, 255, 0.2); box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4); }

.challenge-card.completed { border-color: rgba(52, 211, 153, 0.4); background: linear-gradient(180deg, rgba(52, 211, 153, 0.05), transparent); }
.challenge-card.completed::before {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute; top: var(--spacing-md); right: var(--spacing-md);
    color: var(--success-green);
    background: rgba(52, 211, 153, 0.15);
    width: 24px; height: 24px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.75rem;
}

.challenge-icon { width: 56px; height: 56px; border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; font-size: 1.5rem; margin-bottom: var(--spacing-md); }
.challenge-icon.book { background: rgba(10, 132, 255, 0.1); color: var(--speed-blue); }
.challenge-icon.testament { background: rgba(255, 107, 0, 0.1); color: var(--energy-orange); }
.challenge-icon.special { background: rgba(255, 214, 10, 0.1); color: var(--warning-yellow); }

.challenge-name { font-weight: 700; font-size: 1.1rem; margin-bottom: 4px; }
.challenge-desc { font-size: 0.85rem; color: var(--text-muted); margin-bottom: var(--spacing-md); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

.challenge-meta { display: flex; flex-wrap: wrap; gap: var(--spacing-sm); font-size: 0.8rem; color: var(--text-secondary); font-weight: 500; }
.challenge-meta span { display: flex; align-items: center; gap: 4px; }
.challenge-difficulty { padding: 4px 10px; border-radius: var(--radius-full); font-size: 0.7rem; font-weight: 700; text-transform: uppercase; margin-top: var(--spacing-sm); align-self: flex-start; }
.challenge-difficulty.easy { background: rgba(52, 211, 153, 0.1); color: var(--success-green); }
.challenge-difficulty.medium { background: rgba(255, 107, 0, 0.1); color: var(--energy-orange); }
.challenge-difficulty.hard { background: rgba(255, 69, 58, 0.1); color: var(--danger-red); }

/* ===== MARATHON RUNNING STATE ===== */
.marathon-state { display: none; }
.marathon-state:not(.hidden) { display: block; animation: fadeUp 0.4s forwards; }
.marathon-state.hidden { display: none !important; }

/* Timer Display */
.timer-display { display: flex; justify-content: center; margin-bottom: var(--spacing-xl); margin-top: var(--spacing-lg); }
.timer-ring { position: relative; width: 240px; height: 240px; }
.timer-ring svg { transform: rotate(-90deg); width: 100%; height: 100%; filter: drop-shadow(0 0 10px rgba(0, 221, 128, 0.3)); }
.timer-bg { fill: none; stroke: rgba(255,255,255,0.05); stroke-width: 6; }
.timer-progress { fill: none; stroke: var(--primary-color); stroke-width: 6; stroke-linecap: round; stroke-dasharray: 565.48; stroke-dashoffset: 565.48; transition: stroke-dashoffset 1s linear; }

.timer-content { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); text-align: center; }
.timer-value { display: block; font-size: 3rem; font-weight: 800; font-family: var(--font-ui); color: var(--text-primary); font-variant-numeric: tabular-nums; letter-spacing: -1px; }
.timer-label { display: block; font-size: 0.85rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; font-weight: 600; }

.marathon-info { text-align: center; margin-bottom: var(--spacing-xl); }
.marathon-info h3 { font-size: 1.8rem; margin-bottom: 4px; }

.reading-progress { background: var(--bg-surface); border: var(--border-subtle); border-radius: var(--radius-lg); padding: var(--spacing-lg); margin-bottom: var(--spacing-xl); }

.chapter-nav { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--spacing-xl); padding: 0 var(--spacing-md); }
.current-chapter { text-align: center; }
.chapter-label { display: block; font-size: 0.85rem; color: var(--text-muted); text-transform: uppercase; font-weight: 600; letter-spacing: 1px; }
.chapter-number { display: block; font-size: 3.5rem; font-weight: 800; color: var(--text-primary); line-height: 1; margin-top: 4px; }
.chapter-nav .btn { width: auto; min-width: 120px; }

.reading-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-md); margin-bottom: var(--spacing-xl); }
.stat-card { background: var(--bg-surface); border: var(--border-subtle); border-radius: var(--radius-md); padding: var(--spacing-md); text-align: center; }
.stat-card i { font-size: 1.25rem; color: var(--primary-color); margin-bottom: 8px; opacity: 0.8; }
.stat-card .stat-value { display: block; font-size: 1.4rem; font-weight: 800; color: var(--text-primary); }
.stat-card .stat-label { display: block; font-size: 0.7rem; color: var(--text-muted); text-transform: uppercase; font-weight: 600; letter-spacing: 0.5px; }
.stat-card.large { display: flex; align-items: center; gap: var(--spacing-md); text-align: left; padding: var(--spacing-lg); }
.stat-card.large i { font-size: 1.8rem; margin: 0; background: rgba(255,255,255,0.05); padding: 12px; border-radius: var(--radius-md); }

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

/* Paused State Overlay */
.paused-overlay { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(11, 14, 20, 0.95); backdrop-filter: blur(10px); display: flex; align-items: center; justify-content: center; z-index: var(--z-modal-backdrop); }
.paused-content { text-align: center; color: white; padding: var(--spacing-xl); }
.paused-content > i { font-size: 5rem; margin-bottom: var(--spacing-md); color: rgba(255, 255, 255, 0.5); }
.paused-timer { font-size: 3rem; font-weight: 800; margin: var(--spacing-lg) 0; font-variant-numeric: tabular-nums; }

/* ===== ACHIEVEMENTS ===== */
.achievement-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--spacing-md); margin-bottom: var(--spacing-xl); }
@media(min-width: 500px) { .achievement-stats { grid-template-columns: repeat(4, 1fr); } }

.achievement-stat { display: flex; flex-direction: column; align-items: center; padding: var(--spacing-lg); background: var(--bg-surface); border: var(--border-subtle); border-radius: var(--radius-lg); }
.achievement-stat .stat-icon { width: 48px; height: 48px; border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; margin-bottom: var(--spacing-sm); font-size: 1.25rem; }
.stat-icon.bronze { background: rgba(205, 127, 50, 0.1); color: var(--bronze); border: 1px solid rgba(205, 127, 50, 0.3); }
.stat-icon.silver { background: rgba(226, 232, 240, 0.1); color: var(--silver); border: 1px solid rgba(226, 232, 240, 0.3); }
.stat-icon.gold { background: rgba(255, 215, 0, 0.1); color: var(--gold); border: 1px solid rgba(255, 215, 0, 0.3); }
.stat-icon.special { background: rgba(0, 221, 128, 0.1); color: var(--primary-color); border: 1px solid rgba(0, 221, 128, 0.3); }

.achievement-stat .stat-value { font-size: 1.5rem; font-weight: 800; }
.achievement-stat .stat-label { font-size: 0.75rem; color: var(--text-muted); font-weight: 600; text-transform: uppercase; }

.achievements-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--spacing-md); }
@media (min-width: 600px) { .achievements-grid { grid-template-columns: repeat(3, 1fr); } }

.achievement-card { display: flex; flex-direction: column; align-items: center; text-align: center; padding: var(--spacing-lg) var(--spacing-md); background: var(--bg-surface); border: var(--border-subtle); border-radius: var(--radius-lg); transition: 0.3s; }
.achievement-card.locked { opacity: 0.6; filter: grayscale(1); background: transparent; border: 1px dashed rgba(255, 255, 255, 0.1); }
.achievement-card:not(.locked):hover { transform: translateY(-4px); border-color: rgba(255, 255, 255, 0.2); }

.achievement-badge { width: 64px; height: 64px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.75rem; margin-bottom: var(--spacing-md); box-shadow: 0 5px 15px rgba(0,0,0,0.3); }
.achievement-badge.bronze { background: linear-gradient(135deg, var(--bronze), #8a5320); color: white; }
.achievement-badge.silver { background: linear-gradient(135deg, var(--silver), #94a3b8); color: #111; }
.achievement-badge.gold { background: linear-gradient(135deg, var(--gold), #b89100); color: #111; }
.achievement-badge.special { background: linear-gradient(135deg, var(--primary-color), var(--primary-dark)); color: #111; }

.achievement-name { font-weight: 700; font-size: 0.95rem; margin-bottom: 4px; color: var(--text-primary); }
.achievement-desc { font-size: 0.8rem; color: var(--text-muted); line-height: 1.4; }
.achievement-progress-text { font-size: 0.7rem; color: var(--text-secondary); margin-top: 8px; font-weight: 600; }

/* ===== PROFILE ===== */
.profile-header { display: flex; flex-direction: column; align-items: center; text-align: center; gap: var(--spacing-md); padding: var(--spacing-xl); background: var(--bg-surface-elevated); border: var(--border-subtle); border-radius: var(--radius-xl); margin-bottom: var(--spacing-xl); position: relative; overflow: hidden; }
.profile-header::after { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, var(--primary-color), var(--speed-blue)); }
@media (min-width: 600px) { .profile-header { flex-direction: row; text-align: left; padding: var(--spacing-xl) var(--spacing-2xl); } }

.profile-avatar { position: relative; width: 90px; height: 90px; border-radius: 50%; background: rgba(255,255,255,0.05); border: 2px solid rgba(255,255,255,0.1); display: flex; align-items: center; justify-content: center; font-size: 2.5rem; flex-shrink: 0; color: var(--text-secondary); }
.avatar-edit { position: absolute; bottom: -5px; right: -5px; width: 32px; height: 32px; border-radius: 50%; background: var(--primary-color); color: #111; border: 3px solid var(--bg-surface-elevated); cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 0.8rem; transition: 0.3s; }
.avatar-edit:hover { transform: scale(1.1); }

.profile-info { flex: 1; }
.profile-info h2 { font-size: 2rem; margin-bottom: 4px; }
.profile-title { color: var(--primary-color); font-weight: 600; font-size: 0.95rem; margin-bottom: 12px; }
.profile-badges { display: flex; gap: 8px; justify-content: center; }
@media (min-width: 600px) { .profile-badges { justify-content: flex-start; } }

.badge { padding: 4px 12px; background: rgba(255, 255, 255, 0.1); border-radius: var(--radius-full); font-size: 0.75rem; font-weight: 700; color: var(--text-primary); border: var(--border-subtle); }

.profile-stats { display: grid; grid-template-columns: 1fr; gap: var(--spacing-md); margin-bottom: var(--spacing-xl); }
@media (min-width: 600px) { .profile-stats { grid-template-columns: repeat(2, 1fr); } }

/* FAQ */
.faq-container { display: flex; flex-direction: column; gap: var(--spacing-sm); margin-bottom: var(--spacing-2xl); }
.faq-item { background: var(--bg-surface); border: var(--border-subtle); border-radius: var(--radius-md); overflow: hidden; transition: 0.3s; }
.faq-item:hover { border-color: rgba(255,255,255,0.15); }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; padding: var(--spacing-md) var(--spacing-lg); background: transparent; border: none; font-family: var(--font-ui); font-size: 1rem; font-weight: 600; color: var(--text-primary); text-align: left; cursor: pointer; }
.faq-icon { transition: 0.3s; color: var(--text-muted); }
.faq-question[aria-expanded="true"] .faq-icon { transform: rotate(45deg); color: var(--primary-color); }
.faq-answer { padding: 0 var(--spacing-lg) var(--spacing-lg); color: var(--text-secondary); font-size: 0.9rem; line-height: 1.6; }
.faq-answer[hidden] { display: none; }

/* ===== MODALS ===== */
.modal { position: fixed; top: 0; left: 0; right: 0; bottom: 0; display: none; align-items: center; justify-content: center; z-index: var(--z-modal); padding: var(--spacing-md); }
.modal.active { display: flex; }
.modal-overlay { position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: rgba(11, 14, 20, 0.85); backdrop-filter: blur(8px); }

.modal-content { position: relative; width: 100%; max-width: 420px; background: #151A23; border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius-xl); box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8); overflow: hidden; animation: modalSlideIn 0.4s cubic-bezier(0.16, 1, 0.3, 1); }
.modal-content.small { max-width: 320px; }
.modal-content.celebration { text-align: center; background: linear-gradient(180deg, #1A2235, #151A23); }

@keyframes modalSlideIn { from { opacity: 0; transform: translateY(20px) scale(0.95); } to { opacity: 1; transform: translateY(0) scale(1); } }

.modal-header { display: flex; align-items: center; justify-content: space-between; padding: var(--spacing-lg); border-bottom: var(--border-subtle); }
.modal-close { width: 32px; height: 32px; border-radius: 50%; background: rgba(255,255,255,0.05); border: none; color: var(--text-secondary); cursor: pointer; display: flex; align-items: center; justify-content: center; transition: 0.2s; }
.modal-close:hover { background: rgba(255,255,255,0.1); color: var(--text-primary); }
.modal-body { padding: var(--spacing-lg); overflow-y: auto; max-height: 60vh; }
.modal-footer { display: flex; gap: var(--spacing-sm); padding: var(--spacing-lg); border-top: var(--border-subtle); justify-content: flex-end; background: rgba(0,0,0,0.1); }

.challenge-preview { text-align: center; }
.challenge-preview .challenge-icon { width: 80px; height: 80px; margin: 0 auto var(--spacing-md); font-size: 2.5rem; background: rgba(255,255,255,0.05); color: var(--primary-color); border: 1px solid rgba(255,255,255,0.1); }
.challenge-preview h4 { font-size: 1.4rem; margin-bottom: 8px; }
.challenge-preview p { color: var(--text-secondary); margin-bottom: var(--spacing-lg); }
.challenge-preview .challenge-meta { justify-content: center; background: rgba(0,0,0,0.2); padding: 12px; border-radius: var(--radius-md); }

/* FORMS */
.form-group { margin-bottom: var(--spacing-lg); }
.form-group label { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 8px; color: var(--text-secondary); }
.form-group input { width: 100%; padding: 14px 16px; font-family: var(--font-ui); font-size: 1rem; background: rgba(0,0,0,0.2); border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius-md); color: var(--text-primary); transition: 0.3s; }
.form-group input:focus { outline: none; border-color: var(--primary-color); background: rgba(0, 221, 128, 0.05); }

/* TOAST */
.toast-container { position: fixed; bottom: 90px; left: 50%; transform: translateX(-50%); z-index: var(--z-toast); display: flex; flex-direction: column; gap: var(--spacing-sm); pointer-events: none; }
@media (min-width: 768px) { .toast-container { bottom: var(--spacing-xl); } }
.toast { padding: 12px 20px; background: #FFF; color: #111; border-radius: var(--radius-full); font-size: 0.9rem; font-weight: 600; box-shadow: 0 10px 25px rgba(0,0,0,0.2); opacity: 0; transform: translateY(20px); transition: 0.4s cubic-bezier(0.16, 1, 0.3, 1); display: flex; align-items: center; gap: 8px; pointer-events: auto; }
.toast.show { opacity: 1; transform: translateY(0); }
.toast.success { background: var(--primary-color); color: #000; }
.toast.error { background: var(--danger-red); color: #FFF; }
.toast.warning { background: var(--warning-yellow); color: #000; }

/* UTILS */
.app-footer { text-align: center; padding: var(--spacing-2xl) var(--spacing-md) 100px; color: var(--text-muted); font-size: 0.85rem; }
.app-footer a { color: var(--text-secondary); font-weight: 600; }
.app-footer a:hover { color: var(--text-primary); }
.hidden { display: none !important; }