/* Import classic, readable font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    /* ... existing variables ... */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Improve readability */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family);
    font-weight: 600;
    letter-spacing: -0.02em;
}

p, span, div {
    font-family: var(--font-family);
    line-height: 1.6;
}

button {
    font-family: var(--font-family);
    font-weight: 500;
}

/* Quest Hub - Modern CSS */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;500;600;700;800;900&family=Rajdhani:wght@300;400;500;600;700&display=swap');

:root {
    /* Colors - Cyberpunk Gaming Theme */
    --primary: #00f0ff;
    --primary-dark: #00b8cc;
    --secondary: #ff00ff;
    --accent: #ffed4e;
    --bg-dark: #0a0e1a;
    --bg-card: #1a1f35;
    --bg-card-hover: #252b45;
    --text-primary: #ffffff;
    --text-secondary: #b8bfcc;
    --success: #00ff88;
    --warning: #ffaa00;
    --danger: #ff3366;
    --border: #2a3150;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00f0ff 0%, #0088ff 100%);
    --gradient-secondary: linear-gradient(135deg, #ff00ff 0%, #ff0088 100%);
    --gradient-gold: linear-gradient(135deg, #ffd700 0%, #ff8c00 100%);
    --gradient-dark: linear-gradient(180deg, #0a0e1a 0%, #1a1f35 100%);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 240, 255, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 240, 255, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 240, 255, 0.2);
    --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.3);
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Typography */
    --font-display: 'Orbitron', sans-serif;
    --font-body: 'Rajdhani', sans-serif;
}

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

body {
    font-family: var(--font-body);
    background: var(--bg-dark);
    color: var(--text-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--gradient-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    animation: fadeOut 0.5s ease 2s forwards;
}

.loading-content {
    text-align: center;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-md);
}

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

@keyframes fadeOut {
    to {
        opacity: 0;
        visibility: hidden;
    }
}

/* Main Container */
.main-container {
    max-width: 600px;
    margin: 0 auto;
    min-height: 100vh;
    background: var(--bg-dark);
    position: relative;
}

/* Header */
.app-header {
    background: var(--bg-card);
    padding: var(--spacing-lg) var(--spacing-md);
    border-bottom: 2px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

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

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

.user-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: 3px solid var(--primary);
    box-shadow: var(--shadow-glow);
    object-fit: cover;
}

.user-details h2 {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.user-stats {
    display: flex;
    gap: var(--spacing-md);
}

.stat {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 15px;
    font-weight: 600;
    color: var(--text-secondary);
}

.stat-icon {
    font-size: 18px;
}

.profile-btn {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    border: none;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.profile-btn:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
}

/* Level Progress */
.level-progress {
    margin-top: var(--spacing-md);
}

.progress-bar {
    height: 8px;
    background: var(--border);
    border-radius: 999px;
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 999px;
    transition: width 0.5s ease;
    box-shadow: 0 0 10px var(--primary);
}

.progress-text {
    text-align: center;
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
    font-weight: 600;
}

/* Content Container */
.content-container {
    padding: var(--spacing-lg) var(--spacing-md);
    padding-bottom: 100px; /* Space for bottom nav */
}

.view {
    display: none;
    animation: fadeIn 0.3s ease;
}

.view.active {
    display: block;
}

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

.view-header {
    margin-bottom: var(--spacing-lg);
}

.view-header h1 {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.view-subtitle {
    color: var(--text-secondary);
    font-size: 16px;
    font-weight: 500;
}

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

.filter-tabs::-webkit-scrollbar {
    display: none;
}

.filter-tab {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
    font-family: var(--font-body);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.filter-tab.active {
    background: var(--gradient-primary);
    color: white;
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

/* Quest Cards */
.quests-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.quest-card {
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.quest-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.quest-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.quest-card:hover::before {
    transform: scaleX(1);
}

.quest-card.completed {
    opacity: 0.7;
    border-color: var(--success);
}

.quest-card.completed::before {
    background: var(--success);
    transform: scaleX(1);
}

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

.quest-category {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid var(--primary);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
}

.quest-points {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    color: var(--accent);
}

.quest-body h3 {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.quest-body p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.5;
    margin-bottom: var(--spacing-md);
}

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

.difficulty-badge {
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.difficulty-easy {
    background: rgba(0, 255, 136, 0.2);
    color: var(--success);
}

.difficulty-medium {
    background: rgba(255, 170, 0, 0.2);
    color: var(--warning);
}

.difficulty-hard {
    background: rgba(255, 51, 102, 0.2);
    color: var(--danger);
}

.difficulty-expert {
    background: rgba(255, 0, 255, 0.2);
    color: var(--secondary);
}

.quest-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 13px;
    font-weight: 600;
    color: var(--success);
}

/* Leaderboard */
.leaderboard-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.leaderboard-item {
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: all 0.3s ease;
}

.leaderboard-item:hover {
    border-color: var(--primary);
    transform: translateX(4px);
}

.leaderboard-item.top-1 {
    border-color: #ffd700;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.1) 0%, transparent 100%);
}

.leaderboard-item.top-2 {
    border-color: #c0c0c0;
    background: linear-gradient(135deg, rgba(192, 192, 192, 0.1) 0%, transparent 100%);
}

.leaderboard-item.top-3 {
    border-color: #cd7f32;
    background: linear-gradient(135deg, rgba(205, 127, 50, 0.1) 0%, transparent 100%);
}

.rank-badge {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 800;
    background: var(--bg-dark);
    border: 2px solid var(--border);
}

.leaderboard-item.top-1 .rank-badge {
    background: var(--gradient-gold);
    color: white;
    border-color: #ffd700;
}

.leaderboard-item.top-2 .rank-badge {
    background: linear-gradient(135deg, #c0c0c0 0%, #e8e8e8 100%);
    color: #333;
    border-color: #c0c0c0;
}

.leaderboard-item.top-3 .rank-badge {
    background: linear-gradient(135deg, #cd7f32 0%, #e8a758 100%);
    color: white;
    border-color: #cd7f32;
}

.lb-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 2px solid var(--primary);
    object-fit: cover;
}

.lb-info {
    flex: 1;
}

.lb-name {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.lb-stats {
    display: flex;
    gap: var(--spacing-md);
    font-size: 13px;
    color: var(--text-secondary);
}

.lb-points {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 700;
    color: var(--accent);
}

/* Achievements Grid */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: var(--spacing-md);
}

.achievement-card {
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

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

.achievement-card.locked {
    opacity: 0.5;
}

.achievement-card.unlocked {
    border-color: var(--primary);
    animation: unlock 0.5s ease;
}

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

.achievement-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-sm);
    filter: grayscale(0);
}

.achievement-card.locked .achievement-icon {
    filter: grayscale(1);
}

.achievement-name {
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.achievement-desc {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.4;
}

.achievement-rarity {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.rarity-common { background: rgba(128, 128, 128, 0.2); color: #999; }
.rarity-rare { background: rgba(33, 150, 243, 0.2); color: #2196F3; }
.rarity-epic { background: rgba(156, 39, 176, 0.2); color: #9C27B0; }
.rarity-legendary { background: var(--gradient-gold); color: white; }

/* Invite Card */
.invite-card {
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
}

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

.invite-icon {
    font-size: 64px;
    display: block;
    margin-bottom: var(--spacing-md);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.invite-hero h2 {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
}

.invite-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.stat-box {
    background: var(--bg-dark);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
}

.stat-value {
    display: block;
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 600;
}

.invite-code {
    margin-bottom: var(--spacing-lg);
}

.invite-code label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.code-input-group {
    display: flex;
    gap: var(--spacing-sm);
}

.code-input-group input {
    flex: 1;
    padding: var(--spacing-md);
    background: var(--bg-dark);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 600;
}

.copy-btn {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

/* Buttons */
.primary-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

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

.primary-btn.full-width {
    width: 100%;
}

.secondary-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    background: transparent;
    border: 2px solid var(--primary);
    border-radius: var(--radius-md);
    color: var(--primary);
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-card);
    border: 2px solid var(--primary);
    border-radius: var(--radius-xl);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-close {
    position: sticky;
    top: var(--spacing-md);
    left: calc(100% - 56px);
    width: 40px;
    height: 40px;
    background: var(--bg-dark);
    border: 2px solid var(--border);
    border-radius: 50%;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: var(--danger);
    border-color: var(--danger);
    transform: rotate(90deg);
}

.quest-modal-content,
.profile-modal-content {
    padding: var(--spacing-xl);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-card);
    border: 2px solid var(--primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text-primary);
    font-weight: 600;
    box-shadow: var(--shadow-lg);
    z-index: 10000;
    opacity: 0;
    transition: all 0.3s ease;
}

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

.toast.success {
    border-color: var(--success);
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.2) 0%, var(--bg-card) 100%);
}

.toast.error {
    border-color: var(--danger);
    background: linear-gradient(135deg, rgba(255, 51, 102, 0.2) 0%, var(--bg-card) 100%);
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-card);
    border-top: 2px solid var(--border);
    display: flex;
    justify-content: space-around;
    padding: var(--spacing-xs) 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    max-width: 600px;
    margin: 0 auto;
}

.bottom-nav .nav-item {
    flex: 1;
    background: none;
    border: none;
    padding: var(--spacing-sm);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    transition: all 0.3s ease;
    position: relative;
    font-family: var(--font-body);
}

.bottom-nav .nav-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 32px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 0 0 3px 3px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.bottom-nav .nav-item.active::before {
    opacity: 1;
}

.bottom-nav .nav-icon {
    font-size: 24px;
    transition: transform 0.3s ease;
}

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

.bottom-nav .nav-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

/* Wallet View Styles */
.wallet-card {
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.balance-card {
    background: var(--gradient-primary);
    border: none;
    position: relative;
    overflow: hidden;
}

.balance-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

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

.balance-label {
    font-size: 14px;
    font-weight: 600;
    color: rgba(255,255,255,0.8);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.icon-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    border: none;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.icon-btn:hover {
    background: rgba(255,255,255,0.3);
    transform: rotate(180deg);
}

.balance-amount {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.currency-icon {
    font-size: 48px;
}

.balance-amount span:nth-child(2) {
    font-family: var(--font-display);
    font-size: 48px;
    font-weight: 900;
    color: white;
}

.balance-unit {
    font-size: 20px;
    font-weight: 700;
    color: rgba(255,255,255,0.8);
    align-self: flex-end;
    margin-bottom: 8px;
}

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

.balance-usd {
    font-size: 16px;
    font-weight: 600;
    color: rgba(255,255,255,0.9);
}

.wallet-actions {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.action-btn {
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--font-body);
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 600;
}

.action-btn:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.action-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

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

.wallet-section h3 {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

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

.transaction-item {
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.transaction-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.transaction-info {
    flex: 1;
}

.transaction-title {
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-primary);
}

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

.transaction-amount {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 700;
}

.transaction-amount.positive {
    color: var(--success);
}

.transaction-amount.negative {
    color: var(--danger);
}

.rewards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.reward-item {
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.reward-icon {
    font-size: 32px;
}

.reward-info {
    flex: 1;
}

.reward-value {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 4px;
}

.reward-label {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 600;
}

/* Profile View Styles */
.profile-header-section {
    text-align: center;
    padding: var(--spacing-xl) 0;
    margin-bottom: var(--spacing-lg);
}

.profile-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 4px solid var(--primary);
    box-shadow: var(--shadow-glow);
    margin-bottom: var(--spacing-md);
    object-fit: cover;
}

.profile-header-section h2 {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 800;
    margin-bottom: var(--spacing-xs);
}

.profile-username {
    color: var(--text-secondary);
    font-size: 16px;
    margin-bottom: var(--spacing-md);
}

.profile-level-badge {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 700;
    color: white;
    box-shadow: var(--shadow-glow);
}

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

.profile-stat-card {
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: all 0.3s ease;
}

.profile-stat-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.profile-stat-card .stat-icon {
    font-size: 32px;
}

.stat-content {
    flex: 1;
}

.profile-stat-card .stat-value {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 800;
    color: var(--primary);
    display: block;
    margin-bottom: 4px;
}

.profile-stat-card .stat-label {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 600;
}

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

.profile-section h3 {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.profile-progress-card {
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.progress-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
}

.progress-footer {
    text-align: center;
    margin-top: var(--spacing-sm);
    font-size: 13px;
    color: var(--text-secondary);
}

.profile-achievements {
    display: flex;
    gap: var(--spacing-md);
    overflow-x: auto;
    padding-bottom: var(--spacing-sm);
    -webkit-overflow-scrolling: touch;
}

.profile-achievements::-webkit-scrollbar {
    height: 4px;
}

.profile-achievement-badge {
    min-width: 80px;
    background: var(--bg-card);
    border: 2px solid var(--primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
}

.profile-achievement-badge .achievement-icon {
    font-size: 32px;
    margin-bottom: var(--spacing-xs);
}

.profile-achievement-badge .achievement-name {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-primary);
}

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

.activity-item {
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.activity-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.activity-content {
    flex: 1;
}

.activity-title {
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-primary);
    font-size: 14px;
}

.activity-time {
    font-size: 12px;
    color: var(--text-secondary);
}

.activity-points {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 700;
    color: var(--accent);
}

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

.setting-item {
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--font-body);
    color: var(--text-primary);
}

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

.setting-icon {
    font-size: 24px;
}

.setting-content {
    flex: 1;
}

.setting-title {
    font-weight: 600;
    margin-bottom: 4px;
    font-size: 15px;
}

.setting-desc {
    font-size: 13px;
    color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 480px) {
    .view-header h1 {
        font-size: 28px;
    }
    
    .user-details h2 {
        font-size: 18px;
    }
    
    .achievements-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* Notification System */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #1f2937;
    color: white;
    padding: 16px 24px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 10000;
    animation: slideInRight 0.3s ease;
    max-width: 400px;
}

.notification.success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.notification.error {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
}

.notification.warning {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

.notification.info {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

.notification-icon {
    font-size: 24px;
}

.notification-message {
    flex: 1;
    font-size: 15px;
}

.notification-close {
    background: none;
    border: none;
    color: white;
    font-size: 20px;
    cursor: pointer;
    opacity: 0.7;
}

.notification-close:hover {
    opacity: 1;
}

@keyframes slideInRight {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    max-width: 400px;
    z-index: 10000;
    animation: slideInRight 0.3s ease;
}

.notification-content {
    background: #1f2937;
    color: white;
    padding: 16px 20px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    gap: 12px;
}

.notification.success .notification-content {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.notification.error .notification-content {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
}

.notification.warning .notification-content {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

.notification.info .notification-content,
.notification.quest .notification-content {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

.notification-icon {
    font-size: 24px;
    flex-shrink: 0;
}

.notification-message {
    flex: 1;
    font-size: 15px;
    line-height: 1.5;
}

.notification-close {
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.7;
    transition: opacity 0.2s;
}

.notification-close:hover {
    opacity: 1;
}

@keyframes slideInRight {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

@media (max-width: 768px) {
    .notification {
        left: 20px;
        right: 20px;
        max-width: none;
    }
}