/* Checkout Page Styles */

.checkout-section {
    min-height: 100vh;
    padding: 120px 24px 80px;
    background: var(--bg-primary);
}

.checkout-wrapper {
    max-width: 640px;
    margin: 0 auto;
}

/* Progress Steps */
.checkout-progress {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 48px;
    gap: 0;
}

.progress-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    opacity: 0.4;
    transition: opacity 0.3s;
}

.progress-step.active {
    opacity: 1;
}

.progress-step.completed {
    opacity: 1;
}

.progress-step.completed .step-number {
    background: var(--success);
    border-color: var(--success);
}

.step-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
    background: var(--bg-tertiary);
    transition: all 0.3s;
}

.progress-step.active .step-number {
    border-color: var(--accent);
    background: var(--accent);
    color: white;
}

.progress-step span {
    font-size: 0.75rem;
    color: var(--text-muted);
    white-space: nowrap;
}

.progress-line {
    width: 60px;
    height: 2px;
    background: var(--border);
    margin: 0 8px;
    margin-bottom: 24px;
}

/* Checkout Steps */
.checkout-step {
    animation: slideUp 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.checkout-step.hidden {
    display: none;
}

.checkout-header {
    text-align: center;
    margin-bottom: 32px;
    animation: slideUp 0.5s ease-out 0.1s both;
}

.checkout-header h1 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 8px;
    background: linear-gradient(135deg, #fff 0%, #a1a1aa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.checkout-header p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.amount-display {
    color: var(--accent);
    font-weight: 600;
}

/* Order Summary */
.order-summary {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 32px;
    animation: slideUp 0.5s ease-out 0.2s both;
    transition: all 0.3s ease;
}

.order-summary:hover {
    border-color: var(--border-light);
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

.summary-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
}

.summary-price {
    font-size: 1.25rem;
    color: var(--accent);
}

.summary-note {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 8px;
}

/* Coin Grid */
.coin-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.coin-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: left;
    position: relative;
    overflow: hidden;
}

.coin-option::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(37, 99, 235, 0.1) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.coin-option:hover {
    border-color: var(--accent);
    background: var(--bg-tertiary);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
}

.coin-option:hover::before {
    opacity: 1;
}

.coin-option.selected {
    border-color: var(--accent);
    background: rgba(37, 99, 235, 0.1);
    box-shadow: 0 0 30px rgba(37, 99, 235, 0.2);
}

.coin-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.coin-icon svg {
    width: 40px;
    height: 40px;
}

.coin-icon.usdt { color: #26A17B; }
.coin-icon.usdc { color: #2775CA; }
.coin-icon.btc { color: #F7931A; }
.coin-icon.eth { color: #627EEA; }
.coin-icon.sol { color: #9945FF; }
.coin-icon.bnb { color: #F3BA2F; }
.coin-icon.ltc { color: #BFBBBB; }

.coin-info {
    display: flex;
    flex-direction: column;
}

.coin-name {
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-primary);
}

.coin-network {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Back Button */
.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    padding: 8px 0;
    margin-bottom: 24px;
    transition: color 0.2s;
}

.back-btn:hover {
    color: var(--text-primary);
}

/* Payment Card */
.payment-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 24px;
    animation: scaleIn 0.4s ease-out;
    transition: all 0.3s ease;
}

.payment-card:hover {
    border-color: var(--border-light);
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.payment-network {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 20px;
}

.network-label {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.network-value {
    font-weight: 600;
    color: var(--accent);
    background: rgba(37, 99, 235, 0.1);
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 0.875rem;
}

.wallet-address-section,
.amount-section {
    margin-bottom: 20px;
}

.wallet-address-section label,
.amount-section label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.address-box {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 16px;
}

.address-box code {
    flex: 1;
    font-family: 'SF Mono', Monaco, 'Courier New', monospace;
    font-size: 0.8125rem;
    color: var(--text-primary);
    word-break: break-all;
}

.copy-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--accent);
    color: white;
    border: none;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.8125rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
}

.copy-btn:hover {
    background: var(--accent-hover);
    transform: scale(1.05);
    box-shadow: 0 4px 15px var(--accent-glow);
}

.copy-btn:active {
    transform: scale(0.98);
}

.copy-btn.copied {
    background: var(--success);
    animation: pulse 0.3s ease;
}

.amount-box {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    color: var(--text-primary);
}

.warning-box {
    display: flex;
    gap: 12px;
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: 8px;
    padding: 16px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.warning-box svg {
    color: var(--warning);
    flex-shrink: 0;
    margin-top: 2px;
}

.warning-box strong {
    color: var(--warning);
}

/* Next Button */
.btn-next {
    width: 100%;
    justify-content: center;
}

/* Confirmation Form */
.confirmation-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.confirmation-form .form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.confirmation-form label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.confirmation-form .required {
    color: #ef4444;
}

.confirmation-form input[type="text"],
.confirmation-form input[type="email"] {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 14px 16px;
    font-size: 1rem;
    color: var(--text-primary);
    font-family: var(--font);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.confirmation-form input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.confirmation-form input::placeholder {
    color: var(--text-muted);
}

.form-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* File Upload */
.file-upload {
    position: relative;
}

.file-upload input[type="file"] {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
    z-index: 2;
}

.upload-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 40px;
    background: var(--bg-tertiary);
    border: 2px dashed var(--border);
    border-radius: 12px;
    text-align: center;
    transition: all 0.2s;
}

.file-upload:hover .upload-placeholder {
    border-color: var(--accent);
    background: rgba(37, 99, 235, 0.05);
}

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

.upload-placeholder span {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.upload-hint {
    font-size: 0.75rem !important;
    color: var(--text-muted) !important;
}

.upload-preview {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.upload-preview.hidden {
    display: none;
}

.upload-preview img {
    width: 100%;
    max-height: 200px;
    object-fit: cover;
}

.remove-file {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.remove-file:hover {
    background: #ef4444;
}

/* Processing Info */
.processing-info {
    display: flex;
    gap: 16px;
    background: rgba(37, 99, 235, 0.1);
    border: 1px solid rgba(37, 99, 235, 0.2);
    border-radius: 12px;
    padding: 20px;
}

.info-icon {
    color: var(--accent);
    flex-shrink: 0;
}

.info-content h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.info-content ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.info-content li {
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding-left: 16px;
    position: relative;
}

.info-content li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent);
}

.btn-submit {
    width: 100%;
    justify-content: center;
    margin-top: 8px;
}

/* Success State */
.success-state {
    text-align: center;
    padding: 40px 0;
    animation: slideUp 0.6s ease-out;
}

.success-icon {
    width: 100px;
    height: 100px;
    background: rgba(34, 197, 94, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: var(--success);
    animation: scaleIn 0.5s ease-out 0.2s both;
    box-shadow: 0 0 40px rgba(34, 197, 94, 0.2);
}

.success-state h1 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.success-state > p {
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.success-details {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 32px;
}

.detail-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.detail-item + .detail-item {
    margin-top: 12px;
}

.detail-item svg {
    color: var(--accent);
}

/* Checkout Footer */
.checkout-footer {
    padding: 24px;
    border-top: 1px solid var(--border);
}

.checkout-footer .footer-bottom {
    padding-top: 0;
    border-top: none;
}

/* Responsive */
@media (max-width: 640px) {
    .checkout-section {
        padding: 100px 16px 60px;
    }

    .checkout-progress {
        margin-bottom: 32px;
    }

    .progress-step span {
        display: none;
    }

    .progress-line {
        width: 40px;
        margin-bottom: 0;
    }

    .coin-grid {
        grid-template-columns: 1fr;
    }

    .checkout-header h1 {
        font-size: 1.5rem;
    }

    .address-box {
        flex-direction: column;
        align-items: stretch;
    }

    .copy-btn {
        justify-content: center;
    }

    .amount-box {
        font-size: 1.25rem;
    }

    .processing-info {
        flex-direction: column;
    }
}

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

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Progress step animations */
.progress-step {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-step.active .step-number {
    animation: pulse 0.5s ease;
}

/* Coin grid stagger animation */
.coin-grid .coin-option {
    animation: slideUp 0.4s ease-out backwards;
}

.coin-grid .coin-option:nth-child(1) { animation-delay: 0.1s; }
.coin-grid .coin-option:nth-child(2) { animation-delay: 0.15s; }
.coin-grid .coin-option:nth-child(3) { animation-delay: 0.2s; }
.coin-grid .coin-option:nth-child(4) { animation-delay: 0.25s; }
.coin-grid .coin-option:nth-child(5) { animation-delay: 0.3s; }
.coin-grid .coin-option:nth-child(6) { animation-delay: 0.35s; }
.coin-grid .coin-option:nth-child(7) { animation-delay: 0.4s; }
.coin-grid .coin-option:nth-child(8) { animation-delay: 0.45s; }

/* Form input focus animation */
.confirmation-form input:focus {
    animation: inputFocus 0.3s ease;
}

@keyframes inputFocus {
    0% { transform: scale(1); }
    50% { transform: scale(1.01); }
    100% { transform: scale(1); }
}

/* File upload hover effect */
.file-upload .upload-placeholder {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.file-upload:hover .upload-placeholder svg {
    transform: translateY(-4px);
    transition: transform 0.3s ease;
}

/* Warning box pulse */
.warning-box {
    animation: fadeIn 0.4s ease-out 0.3s both;
}

/* Button hover glow */
.btn-next,
.btn-submit {
    position: relative;
    overflow: hidden;
}

.btn-next::after,
.btn-submit::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.btn-next:hover::after,
.btn-submit:hover::after {
    opacity: 1;
}


/* Sales Disabled State */
.sales-disabled {
    text-align: center;
    padding: 80px 20px;
    animation: slideUp 0.6s ease-out;
}

.disabled-icon {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1) 0%, rgba(124, 58, 237, 0.1) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 32px;
    color: var(--accent);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.3); }
    50% { transform: scale(1.05); box-shadow: 0 0 40px rgba(37, 99, 235, 0.2); }
}

.sales-disabled h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #fff 0%, #a1a1aa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sales-disabled p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 8px;
}

.sales-disabled p strong {
    color: var(--accent);
}

.disabled-note {
    color: var(--text-muted) !important;
    font-size: 0.9375rem !important;
    margin-bottom: 32px !important;
}

.disabled-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

@media (max-width: 480px) {
    .disabled-actions {
        flex-direction: column;
    }
    
    .disabled-actions .btn {
        width: 100%;
        justify-content: center;
    }
}