:root {
    --primary: #6C63FF;
    --primary-dark: #5A52D5;
    --secondary: #00D2FF;
    --success: #00C853;
    --danger: #FF1744;
    --warning: #FF9100;
    --dark: #1A1A2E;
    --darker: #16213E;
    --light: #F0F2F5;
    --white: #FFFFFF;
    --gray: #6B7280;
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 20px 60px rgba(0, 0, 0, 0.15);
    --radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--dark);
    line-height: 1.6;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Glassmorphism Cards */
.glass-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 30px;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

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

/* Auth Container */
.auth-container {
    max-width: 440px;
    margin: 40px auto;
    padding: 40px;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.auth-container .logo {
    text-align: center;
    margin-bottom: 30px;
}

.auth-container .logo h1 {
    font-size: 32px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
}

.auth-container .logo p {
    color: var(--gray);
    margin-top: 5px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark);
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #E5E7EB;
    border-radius: 12px;
    font-size: 15px;
    transition: var(--transition);
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(108, 99, 255, 0.1);
    outline: none;
}

.form-group input.error {
    border-color: var(--danger);
}

.form-group .input-icon {
    position: relative;
}

.form-group .input-icon i {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray);
}

.form-group .input-icon input {
    padding-left: 44px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    gap: 10px;
    width: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(108, 99, 255, 0.35);
}

.btn-secondary {
    background: var(--light);
    color: var(--dark);
}

.btn-secondary:hover {
    background: #E5E7EB;
}

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

.btn-success:hover {
    background: #00B84A;
    transform: translateY(-2px);
}

.btn-danger {
    background: var(--danger);
    color: var(--white);
}

.btn-danger:hover {
    background: #E0152F;
    transform: translateY(-2px);
}

.btn-warning {
    background: var(--warning);
    color: var(--white);
}

.btn-warning:hover {
    background: #E88200;
    transform: translateY(-2px);
}

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

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

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
    width: auto;
}

.btn-lg {
    padding: 18px 40px;
    font-size: 18px;
}

/* Dashboard Layout */
.dashboard {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

/* Navbar */
.navbar {
    background: linear-gradient(135deg, var(--dark), var(--darker));
    padding: 16px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.navbar-brand {
    color: var(--white);
    font-size: 24px;
    font-weight: 800;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.navbar-brand span {
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.navbar-nav a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 10px;
    transition: var(--transition);
    font-size: 14px;
    font-weight: 500;
}

.navbar-nav a:hover,
.navbar-nav a.active {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
}

.navbar-user {
    display: flex;
    align-items: center;
    gap: 15px;
    color: var(--white);
}

.navbar-user .user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
}

.navbar-user .badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-standard {
    background: #E5E7EB;
    color: var(--gray);
}

.badge-silver {
    background: #D1D5DB;
    color: #6B7280;
}

.badge-gold {
    background: #FCD34D;
    color: #92400E;
}

.badge-platinum {
    background: #A78BFA;
    color: #4C1D95;
}

/* Dashboard Content */
.dashboard-content {
    padding: 30px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--light);
    padding: 24px;
    border-radius: var(--radius);
    transition: var(--transition);
}

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

.stat-card .stat-icon {
    font-size: 28px;
    margin-bottom: 10px;
}

.stat-card .stat-value {
    font-size: 28px;
    font-weight: 800;
    color: var(--dark);
}

.stat-card .stat-label {
    color: var(--gray);
    font-size: 14px;
    margin-top: 4px;
}

.stat-card .stat-change {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-top: 8px;
}

.stat-change.positive {
    background: #D1FAE5;
    color: #065F46;
}

.stat-change.negative {
    background: #FEE2E2;
    color: #991B1B;
}

/* Cards */
.card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 24px;
    border: 1px solid #F3F4F6;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.card-header h3 {
    font-size: 18px;
    font-weight: 700;
}

/* Transaction List */
.transaction-list {
    max-height: 400px;
    overflow-y: auto;
}

.transaction-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 0;
    border-bottom: 1px solid #F3F4F6;
    transition: var(--transition);
}

.transaction-item:hover {
    background: #FAFAFA;
}

.transaction-item:last-child {
    border-bottom: none;
}

.transaction-item .tx-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.tx-icon.received {
    background: #D1FAE5;
    color: #065F46;
}

.tx-icon.sent {
    background: #FEE2E2;
    color: #991B1B;
}

.tx-icon.interest {
    background: #FEF3C7;
    color: #92400E;
}

.tx-info {
    flex: 1;
    margin: 0 15px;
}

.tx-info .tx-title {
    font-weight: 600;
    font-size: 14px;
}

.tx-info .tx-date {
    color: var(--gray);
    font-size: 12px;
}

.tx-amount {
    font-weight: 700;
    font-size: 16px;
}

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

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

/* Invoice Box */
.invoice-box {
    background: var(--white);
    border: 2px solid #E5E7EB;
    border-radius: var(--radius);
    padding: 30px;
    margin: 20px 0;
}

.invoice-box .invoice-header {
    text-align: center;
    border-bottom: 2px solid #E5E7EB;
    padding-bottom: 20px;
    margin-bottom: 20px;
}

.invoice-box .invoice-header h2 {
    font-size: 28px;
    font-weight: 800;
}

.invoice-box .invoice-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin: 20px 0;
}

.invoice-box .invoice-details .detail-item {
    padding: 12px;
    background: var(--light);
    border-radius: 10px;
}

.invoice-box .invoice-details .detail-item label {
    color: var(--gray);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.invoice-box .invoice-details .detail-item .value {
    font-size: 18px;
    font-weight: 700;
    margin-top: 4px;
}

.invoice-box .invoice-total {
    text-align: center;
    padding: 20px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius);
    color: var(--white);
}

.invoice-box .invoice-total .amount {
    font-size: 36px;
    font-weight: 800;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        align-items: stretch;
        padding: 16px 20px;
    }
    
    .navbar-nav {
        flex-direction: column;
        align-items: stretch;
    }
    
    .navbar-nav a {
        text-align: center;
        padding: 10px;
    }
    
    .navbar-user {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .dashboard-content {
        padding: 20px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .invoice-box .invoice-details {
        grid-template-columns: 1fr;
    }
    
    .auth-container {
        margin: 20px auto;
        padding: 24px;
    }
    
    .glass-card {
        padding: 20px;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: #F3F4F6;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 10px;
}

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

/* Toast Notifications */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 16px 24px;
    border-radius: 12px;
    color: var(--white);
    font-weight: 500;
    box-shadow: var(--shadow);
    z-index: 9999;
    animation: slideInRight 0.4s ease;
    max-width: 400px;
}

.toast-success {
    background: var(--success);
}

.toast-error {
    background: var(--danger);
}

.toast-info {
    background: var(--primary);
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Loading Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--light);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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