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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background: linear-gradient(135deg, #1A237E 0%, #0D47A1 50%, #4A148C 100%);
    min-height: 100vh;
    color: #fff;
}

.app-container {
    max-width: 500px;
    margin: 0 auto;
    min-height: 100vh;
    padding: 20px;
    position: relative;
}

/* Header */
.header {
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

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

.logo-text {
    font-size: 24px;
    font-weight: bold;
}

.back-button {
    background: rgba(255,255,255,0.2);
    border: none;
    color: white;
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    backdrop-filter: blur(10px);
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 40px 0;
}

.hero h1 {
    font-size: 32px;
    margin-bottom: 10px;
}

.tagline {
    font-size: 18px;
    opacity: 0.9;
}

/* Feature Cards */
.features {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin: 30px 0;
}

.feature-card {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    cursor: pointer;
    transition: transform 0.2s, background 0.2s;
    border: 1px solid rgba(255,255,255,0.2);
}

.feature-card:hover {
    transform: translateX(5px);
    background: rgba(255,255,255,0.15);
}

.feature-icon {
    font-size: 40px;
    width: 60px;
    text-align: center;
}

.feature-card h3 {
    flex: 1;
    font-size: 18px;
}

.feature-card p {
    font-size: 12px;
    opacity: 0.8;
    margin-top: 4px;
}

.arrow {
    font-size: 20px;
    opacity: 0.7;
}

/* Buttons */
.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 30px;
}

.btn-primary, .btn-secondary, .btn-danger {
    padding: 16px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: opacity 0.2s;
}

.btn-primary {
    background: #FFC107;
    color: #1A237E;
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-danger {
    background: #f44336;
    color: white;
}

.btn-primary:active, .btn-secondary:active {
    opacity: 0.8;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 500;
}

.form-group input, .form-group select {
    width: 100%;
    padding: 14px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.1);
    color: white;
    font-size: 16px;
}

.form-group input::placeholder {
    color: rgba(255,255,255,0.5);
}

.form-group input:focus {
    outline: none;
    border-color: #FFC107;
}

/* Dashboard Cards */
.dashboard-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin: 20px 0;
}

.dashboard-card {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 20px;
    text-align: center;
    cursor: pointer;
    transition: transform 0.2s;
}

.dashboard-card:active {
    transform: scale(0.98);
}

.dashboard-card .card-icon {
    font-size: 36px;
    margin-bottom: 10px;
}

.dashboard-card h3 {
    font-size: 16px;
    margin-bottom: 5px;
}

.dashboard-card p {
    font-size: 12px;
    opacity: 0.8;
}

/* Wallet Card */
.wallet-card {
    background: linear-gradient(135deg, #FFC107, #FF9800);
    border-radius: 20px;
    padding: 25px;
    margin: 20px 0;
    text-align: center;
    color: #1A237E;
}

.wallet-card h3 {
    font-size: 14px;
    margin-bottom: 10px;
    opacity: 0.9;
}

.wallet-balance {
    font-size: 42px;
    font-weight: bold;
    margin: 10px 0;
}

/* User Info */
.user-info {
    background: rgba(255,255,255,0.1);
    border-radius: 16px;
    padding: 20px;
    margin: 20px 0;
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-avatar {
    width: 60px;
    height: 60px;
    background: #FFC107;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #1A237E;
}

.user-details h3 {
    font-size: 18px;
    margin-bottom: 5px;
}

.user-details p {
    font-size: 12px;
    opacity: 0.8;
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0,0,0,0.9);
    backdrop-filter: blur(20px);
    display: flex;
    justify-content: space-around;
    padding: 12px;
    max-width: 500px;
    margin: 0 auto;
}

.nav-item {
    text-align: center;
    padding: 8px;
    cursor: pointer;
    transition: transform 0.2s;
    flex: 1;
}

.nav-item:active {
    transform: scale(0.95);
}

.nav-icon {
    font-size: 24px;
    display: block;
}

.nav-label {
    font-size: 11px;
    margin-top: 4px;
}

.nav-item.active {
    color: #FFC107;
}

/* Loading Spinner */
.loading {
    text-align: center;
    padding: 40px;
}

.spinner {
    border: 3px solid rgba(255,255,255,0.3);
    border-top: 3px solid #FFC107;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Utility Classes */
.hidden {
    display: none;
}

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

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

/* Responsive */
@media (max-width: 500px) {
    .app-container {
        padding: 15px;
    }
    
    .dashboard-cards {
        gap: 10px;
    }
    
    .wallet-balance {
        font-size: 32px;
    }
}