/* ============================================
   GLOBAL STYLES - MODERN & PROFESSIONAL
   ============================================ */

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

:root {
    /* Primary Colors */
    --primary-color: #0a0e27;
    --secondary-color: #141b2d;
    --accent-color: #1a2332;
    --highlight-color: #e94560;
    --highlight-hover: #ff5a75;
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #b8b8b8;
    --text-muted: #6b7280;
    
    /* Status Colors */
    --success-color: #10b981;
    --success-hover: #059669;
    --warning-color: #f59e0b;
    --warning-hover: #d97706;
    --danger-color: #ef4444;
    --info-color: #3b82f6;
    
    /* UI Elements */
    --border-color: #2a2a3e;
    --border-light: #3a3a4e;
    --card-bg: #1e1e3e;
    --card-hover: #252548;
    --overlay: rgba(0, 0, 0, 0.85);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-danger: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    --gradient-accent: linear-gradient(135deg, #1a2332 0%, #0f1419 100%);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 20px rgba(233, 69, 96, 0.3);
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   BASE STYLES
   ============================================ */

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--primary-color);
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(233, 69, 96, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
    background-attachment: fixed;
    color: var(--text-primary);
    overflow-x: hidden;
    padding-bottom: 80px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

#app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
}

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

.header {
    background: var(--secondary-color);
    background: linear-gradient(180deg, var(--secondary-color) 0%, rgba(20, 27, 45, 0.95) 100%);
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    max-width: 1200px;
    margin: 0 auto;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.username-display {
    font-weight: 600;
    font-size: 15px;
    color: var(--text-primary);
    letter-spacing: 0.3px;
}

.division-badge {
    background: var(--gradient-accent);
    padding: 6px 12px;
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.division-badge:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.currency-display {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    align-items: center;
}

.currency-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    padding: 6px 10px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    transition: var(--transition-base);
}

.currency-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-1px);
}

.currency-icon {
    font-size: 16px;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.3));
}

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

.main-content {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
}

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

.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--secondary-color);
    background: linear-gradient(180deg, rgba(20, 27, 45, 0.95) 0%, var(--secondary-color) 100%);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 10px 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 -4px 6px -1px rgba(0, 0, 0, 0.1);
}

.nav-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 10px 14px;
    cursor: pointer;
    transition: var(--transition-base);
    flex: 1;
    max-width: 80px;
    border-radius: var(--radius-md);
    position: relative;
}

.nav-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--highlight-color);
    opacity: 0;
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.nav-btn[data-section="home"] {
    flex: 1.3;
    max-width: 100px;
}

.nav-btn.active {
    color: var(--highlight-color);
}

.nav-btn.active::before {
    opacity: 0.1;
}

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

.nav-btn:hover::before {
    opacity: 0.05;
}

.nav-icon {
    font-size: 24px;
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.2));
}

.nav-label {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
    z-index: 1;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    background: var(--highlight-color);
    background: linear-gradient(135deg, var(--highlight-color) 0%, #d6335a 100%);
    color: white;
    border: none;
    padding: 14px 28px;
    border-radius: var(--radius-lg);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
    width: 100%;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    letter-spacing: 0.3px;
}

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

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

.btn:hover {
    background: linear-gradient(135deg, var(--highlight-hover) 0%, var(--highlight-color) 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-md);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn:disabled:hover {
    transform: none;
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--accent-color);
    background: linear-gradient(135deg, var(--accent-color) 0%, #151e2e 100%);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #1f2a3f 0%, var(--accent-color) 100%);
}

.btn-success {
    background: var(--gradient-success);
}

.btn-success:hover {
    background: linear-gradient(135deg, var(--success-hover) 0%, var(--success-color) 100%);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, var(--warning-hover) 100%);
}

.btn-warning:hover {
    background: linear-gradient(135deg, var(--warning-hover) 0%, var(--warning-color) 100%);
}

/* ============================================
   CARDS
   ============================================ */

.card {
    background: var(--card-bg);
    background: linear-gradient(135deg, var(--card-bg) 0%, rgba(30, 30, 62, 0.8) 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-base);
}

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

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

.card-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
    letter-spacing: 0.3px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.card-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--border-color), transparent);
}

/* ============================================
   LOADING
   ============================================ */

.loading {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
    font-size: 16px;
    position: relative;
}

.loading::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--highlight-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* ============================================
   SCROLLBAR
   ============================================ */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--secondary-color);
}

::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--highlight-color);
}

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

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .currency-display {
        width: 100%;
        justify-content: space-between;
    }
    
    .main-content {
        padding: 16px;
    }
    
    .card {
        padding: 16px;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: 12px;
    }
    
    .card {
        padding: 14px;
        border-radius: var(--radius-lg);
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 15px;
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

.fade-in {
    animation: fadeIn 0.3s ease-out;
}

.slide-in {
    animation: slideIn 0.3s ease-out;
}

.pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

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

.text-muted {
    color: var(--text-muted);
}

.text-success {
    color: var(--success-color);
}

.text-warning {
    color: var(--warning-color);
}

.text-danger {
    color: var(--danger-color);
}

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }

.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }