/* assets/css/style.css */
:root {
    --primary-blue: #1e3a8a;
    --primary-pink: #e91e63;
    --secondary-gray: #9ca3af;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --text-color: #1f2937;
    --bg-color: #f8fafc;
    --white: #ffffff;
    --border-color: #e5e7eb;
    --shadow: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.1);
}

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

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    min-height: 100vh;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-pink) 100%);
    color: var(--white);
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-img {
    width: 50px;
    height: 50px;
    object-fit: contain;
    background: var(--white);
    padding: 5px;
    border-radius: 8px;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--white);
}

.auth-status {
    display: flex;
    align-items: center;
}

.auth-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    background: rgba(255,255,255,0.15);
    font-size: 0.9rem;
    font-weight: 500;
    backdrop-filter: blur(10px);
}

.auth-indicator.online {
    background: var(--success-color);
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.3);
}

.auth-indicator.offline {
    background: var(--error-color);
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.3);
}

.auth-indicator i {
    font-size: 0.8rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Navigation */
.nav-tabs {
    background: var(--white);
    display: flex;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

.tab-button {
    background: none;
    border: none;
    padding: 1rem 2rem;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-color);
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
    font-weight: 500;
    position: relative;
}

.tab-button:hover {
    background: var(--bg-color);
    color: var(--primary-blue);
}

.tab-button.active {
    color: var(--primary-blue);
    border-bottom-color: var(--primary-pink);
    background: var(--bg-color);
}

.tab-button.active::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-pink));
}

/* Main Content */
.main-content {
    padding: 2rem;
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

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

/* Cards */
.card {
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow);
    overflow: hidden;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

.card-header {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-pink) 100%);
    color: var(--white);
    padding: 1.5rem 2rem;
}

.card-header h2 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 600;
}

.card-body {
    padding: 2rem;
}

/* Forms */
.form {
    max-width: 100%;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-group {
    position: relative;
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.btn-generate {
    position: absolute;
    right: 8px;
    top: 32px;
    background: var(--primary-pink);
    color: var(--white);
    border: none;
    padding: 0.5rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(233, 30, 99, 0.3);
}

.btn-generate:hover {
    background: #c2185b;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(233, 30, 99, 0.4);
}

/* Transfer Type Selection */
.transfer-type-selection {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.radio-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-color);
    transition: color 0.3s ease;
}

.radio-group:hover {
    color: var(--primary-blue);
}

.radio-group input[type="radio"] {
    display: none;
}

.radio-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    position: relative;
    transition: all 0.3s ease;
}

.radio-group input[type="radio"]:checked + .radio-custom {
    border-color: var(--primary-blue);
    background: var(--primary-blue);
}

.radio-group input[type="radio"]:checked + .radio-custom::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background: var(--white);
    border-radius: 50%;
}

/* Buttons */
.btn {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-pink) 100%);
    color: var(--white);
    border: none;
    padding: 0.875rem 1.75rem;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    text-decoration: none;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(30, 58, 138, 0.3);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(30, 58, 138, 0.4);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-pink) 100%);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary-gray) 0%, #6b7280 100%);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color) 0%, #059669 100%);
}

/* Transaction Details */
.transaction-details {
    margin-top: 2rem;
    padding: 2rem;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.transaction-details h3 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
    font-size: 1.3rem;
    font-weight: 600;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.info-item {
    background: var(--white);
    padding: 1.25rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary-blue);
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

.info-item:hover {
    transform: translateY(-2px);
}

.info-item label {
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: 0.25rem;
    display: block;
    font-size: 0.9rem;
}

.info-item span {
    color: var(--text-color);
    font-weight: 500;
}

/* Balance Cards */
.balance-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.balance-card {
    background: linear-gradient(135deg, var(--success-color) 0%, #059669 100%);
    color: var(--white);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.3);
    transition: transform 0.3s ease;
}

.balance-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(16, 185, 129, 0.4);
}

.balance-card h3 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
    font-weight: 500;
    opacity: 0.9;
}

.balance-amount {
    font-size: 2.2rem;
    font-weight: 700;
    margin: 0;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.loading-content {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

/* Messages */
.message-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1001;
}

.message {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    min-width: 320px;
    animation: slideIn 0.3s ease;
    font-weight: 500;
    box-shadow: var(--shadow);
}

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

.message.error {
    background: var(--error-color);
    color: var(--white);
}

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

.message.info {
    background: var(--primary-blue);
    color: var(--white);
}

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

/* Responsive */
@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .transfer-type-selection {
        flex-direction: column;
        gap: 1rem;
    }
    
    .balance-cards {
        grid-template-columns: 1fr;
    }
    
    .header {
        padding: 1rem;
        flex-direction: column;
        gap: 1rem;
    }
    
    .logo h1 {
        font-size: 1.5rem;
    }
    
    .nav-tabs {
        flex-wrap: wrap;
    }
    
    .tab-button {
        flex: 1;
        min-width: 120px;
        padding: 0.875rem 1rem;
    }
    
    .main-content {
        padding: 1rem;
    }
    
    .card-body {
        padding: 1.5rem;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 0.75rem;
    }
    
    .logo-img {
        width: 40px;
        height: 40px;
    }
    
    .logo h1 {
        font-size: 1.3rem;
    }
    
    .tab-button {
        font-size: 0.9rem;
        padding: 0.75rem 0.5rem;
    }
    
    .balance-amount {
        font-size: 1.8rem;
    }
    
    .message {
        min-width: 280px;
        font-size: 0.9rem;
    }
}