/* Base Styles */
:root {
    --primary-color: #3375bb;
    --secondary-color: #2c3e50;
    --success-color: #2ecc71;
    --danger-color: #e74c3c;
    --warning-color: #f39c12;
    --info-color: #3498db;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --white: #ffffff;
    --gray: #95a5a6;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    text-align: center;
    margin-bottom: 30px;
}

.logo {
    width: 80px;
    height: 80px;
    margin-bottom: 10px;
}

h1, h2, h3, h4 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

/* Card Styles */
.card {
    background-color: var(--white);
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    margin-bottom: 20px;
}

.card-header {
    background-color: var(--primary-color);
    color: white;
    padding: 15px 20px;
}

.card-body {
    padding: 20px;
}

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

.form-control {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
}

.help-text {
    font-size: 14px;
    color: var(--gray);
    margin-top: 5px;
}

/* Button Styles */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    transition: all 0.3s ease;
}

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

.btn-primary:hover {
    background-color: #286090;
}

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

.btn-secondary:hover {
    background-color: #7f8c8d;
}

.btn-block {
    display: block;
    width: 100%;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 14px;
}

/* Alert Styles */
.alert {
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
}

.alert i {
    margin-right: 10px;
    font-size: 20px;
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border-left: 4px solid #ffeeba;
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
    border-left: 4px solid #f5c6cb;
}

.alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border-left: 4px solid #bee5eb;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border-left: 4px solid #c3e6cb;
}

/* Loading Spinner */
.loading-spinner {
    text-align: center;
    padding: 30px 0;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
    margin: 0 auto 20px;
}

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

/* Success Checkmark */
.success-checkmark {
    text-align: center;
    padding: 30px 0;
}

.check-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto;
    position: relative;
    border-radius: 50%;
    box-sizing: content-box;
    border: 4px solid var(--success-color);
}

.check-icon::before {
    top: 3px;
    left: -2px;
    width: 30px;
    transform-origin: 100% 50%;
    border-radius: 100px 0 0 100px;
}

.check-icon::after {
    top: 0;
    left: 30px;
    width: 60px;
    transform-origin: 0 50%;
    border-radius: 0 100px 100px 0;
    animation: rotate-circle 4.25s ease-in;
}

.check-icon::before, .check-icon::after {
    content: '';
    height: 100px;
    position: absolute;
    background: #ffffff;
    transform: rotate(-45deg);
}

.icon-line {
    height: 5px;
    background-color: var(--success-color);
    display: block;
    border-radius: 2px;
    position: absolute;
    z-index: 10;
}

.icon-line.line-tip {
    top: 46px;
    left: 14px;
    width: 25px;
    transform: rotate(45deg);
    animation: icon-line-tip 0.75s;
}

.icon-line.line-long {
    top: 38px;
    right: 8px;
    width: 47px;
    transform: rotate(-45deg);
    animation: icon-line-long 0.75s;
}

.icon-circle {
    top: -4px;
    left: -4px;
    z-index: 10;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    position: absolute;
    box-sizing: content-box;
    border: 4px solid rgba(76, 175, 80, 0.5);
}

.icon-fix {
    top: 8px;
    width: 5px;
    left: 26px;
    z-index: 1;
    height: 85px;
    position: absolute;
    transform: rotate(-45deg);
    background-color: #ffffff;
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 10px;
    background-color: #e0e0e0;
    border-radius: 5px;
    margin: 20px 0;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background-color: var(--primary-color);
    border-radius: 5px;
    transition: width 0.3s ease;
}

.progress-text {
    text-align: center;
    font-weight: 600;
    margin-bottom: 10px;
}

.countdown {
    background-color: #f8f9fa;
    padding: 15px;
    border-radius: 5px;
    text-align: center;
    margin-top: 20px;
}

.countdown i {
    font-size: 24px;
    color: var(--warning-color);
    margin-bottom: 10px;
}

/* Login Options */
.login-options {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.login-option {
    padding: 20px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    border: 1px solid #ddd;
}

.login-option:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.login-option.google-drive {
    background-color: #f8f9fa;
    border-color: #4285f4;
}

.login-option.secret-phrase {
    background-color: #f8f9fa;
    border-color: var(--primary-color);
}

.login-icon {
    font-size: 40px;
    margin-bottom: 10px;
}

.login-option.google-drive .login-icon {
    color: #4285f4;
}

.login-option.secret-phrase .login-icon {
    color: var(--primary-color);
}

/* Swap Form */
.balance-info {
    text-align: center;
    margin-bottom: 20px;
    padding: 15px;
    background-color: #f8f9fa;
    border-radius: 5px;
}

.balance-amount {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

.conversion-result {
    background-color: #f8f9fa;
    padding: 15px;
    border-radius: 5px;
    margin: 20px 0;
}

.amount-large {
    font-size: 24px;
    font-weight: 700;
    text-align: center;
    margin: 15px 0;
}

.action-buttons {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.action-buttons .btn {
    flex: 1;
}

/* Transaction Details */
.transaction-details, .bnb-requirement {
    background-color: #f8f9fa;
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.bnb-amount {
    font-size: 20px;
    font-weight: 700;
    color: var(--danger-color);
    text-align: center;
    margin-top: 10px;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .card-header {
        padding: 10px 15px;
    }
    
    .card-body {
        padding: 15px;
    }
}