/* ===== CHECKOUT CSS - Design Moderno Baseado na Landing Page ===== */

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #8b5cf6;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-tertiary: rgba(255, 255, 255, 0.5);
    --border-color: rgba(255, 255, 255, 0.1);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
    --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    --box-shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.4);
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 20px;
    --transition-fast: all 0.2s ease;
    --transition-normal: all 0.3s ease;
    --transition-slow: all 0.5s ease;
}

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

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===== PRELOADER ===== */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.preloader-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.2);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ===== CONTAINER ===== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== HEADER ===== */
.checkout-header {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.checkout-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    transition: var(--transition-fast);
}

.logo i {
    font-size: 1.8rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.logo-highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-security {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--success);
    font-size: 0.875rem;
    font-weight: 500;
}

.header-security i {
    font-size: 1rem;
}

/* ===== MAIN CONTENT ===== */
.checkout-main {
    padding: 60px 0;
    min-height: calc(100vh - 180px);
}

.checkout-grid {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 40px;
    align-items: start;
}

/* ===== FORM COLUMN ===== */
.checkout-form-column {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    padding: 40px;
    box-shadow: var(--box-shadow);
}

/* ===== PROGRESS STEPS ===== */
.checkout-progress {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 40px;
    position: relative;
}

.progress-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    flex: 1;
    position: relative;
    z-index: 2;
}

.step-circle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: var(--transition-normal);
}

.step-circle i {
    font-size: 1.5rem;
    color: var(--text-tertiary);
    transition: var(--transition-normal);
}

.step-number {
    display: none;
}

.step-label {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    font-weight: 500;
    transition: var(--transition-normal);
}

.progress-step.active .step-circle {
    background: var(--gradient-primary);
    border-color: var(--primary);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.5);
}

.progress-step.active .step-circle i {
    color: var(--text-primary);
}

.progress-step.active .step-label {
    color: var(--primary-light);
}

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

.progress-step.completed .step-circle i {
    color: var(--text-primary);
}

.progress-line {
    flex: 1;
    height: 2px;
    background: var(--border-color);
    position: relative;
    top: -22px;
    z-index: 1;
}

/* ===== FORM ===== */
.checkout-form {
    position: relative;
}

.form-step {
    display: none;
    animation: fadeIn 0.5s ease;
}

.form-step.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 10px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.form-description {
    color: var(--text-secondary);
    margin-bottom: 30px;
    font-size: 0.95rem;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9375rem;
}

.form-group label i {
    color: var(--primary-light);
    font-size: 1rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-size: 0.9375rem;
    font-family: 'Poppins', sans-serif;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group input::placeholder {
    color: var(--text-tertiary);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

/* ===== PAYMENT METHODS ===== */
.payment-methods {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 30px;
}

.payment-method {
    position: relative;
}

.payment-method input[type="radio"] {
    position: absolute;
    opacity: 0;
}

.payment-method label {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
}

.payment-method label:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--primary-light);
}

.payment-method input[type="radio"]:checked + label {
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.method-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--border-radius-md);
    flex-shrink: 0;
}

.method-icon i {
    font-size: 1.5rem;
    color: var(--primary-light);
}

.method-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.method-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
}

.method-desc {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.method-brands {
    display: flex;
    gap: 8px;
    font-size: 1.5rem;
    color: var(--text-secondary);
}

.method-badge {
    background: var(--success);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* ===== CARD FORM ===== */
.card-form {
    padding: 25px;
    background: rgba(99, 102, 241, 0.05);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--border-radius-md);
    margin-top: 20px;
    animation: slideDown 0.3s ease;
}

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

/* ===== REVIEW SECTION ===== */
.review-section {
    padding: 25px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    margin-bottom: 20px;
}

.review-section h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.125rem;
    margin-bottom: 20px;
    color: var(--primary-light);
}

.review-section h3 i {
    font-size: 1.25rem;
}

.review-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

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

.review-label {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.review-value {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.9375rem;
}

/* ===== TERMS CHECKBOX ===== */
.terms-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 25px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
}

.terms-checkbox input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    cursor: pointer;
    flex-shrink: 0;
}

.terms-checkbox label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
    cursor: pointer;
}

.terms-checkbox a {
    color: var(--primary-light);
    text-decoration: none;
    transition: var(--transition-fast);
}

.terms-checkbox a:hover {
    color: var(--primary);
    text-decoration: underline;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    border: none;
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    font-weight: 600;
    font-family: 'Poppins', sans-serif;
    cursor: pointer;
    transition: var(--transition-normal);
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-primary);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary-light);
}

.btn-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: var(--text-primary);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.4);
}

.btn-block {
    width: 100%;
}

.form-actions {
    display: flex;
    gap: 15px;
}

.form-actions .btn {
    flex: 1;
}

/* ===== SUMMARY COLUMN ===== */
.checkout-summary-column {
    position: sticky;
    top: 100px;
}

.order-summary {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    padding: 30px;
    box-shadow: var(--box-shadow);
}

.summary-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    margin-bottom: 25px;
    color: var(--text-primary);
}

.summary-title i {
    font-size: 1.5rem;
    color: var(--primary-light);
}

.plan-selected {
    padding: 20px;
    background: rgba(99, 102, 241, 0.1);
    border: 2px solid var(--primary);
    border-radius: var(--border-radius-md);
    margin-bottom: 25px;
}

.plan-name {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.plan-price {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.plan-features {
    list-style: none;
    font-size: 0.875rem;
}

.plan-features li {
    padding: 6px 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.plan-features li i {
    color: var(--success);
    font-size: 0.875rem;
}

.summary-divider {
    height: 1px;
    background: var(--border-color);
    margin: 20px 0;
}

.summary-details {
    margin-bottom: 25px;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.summary-row span:last-child {
    font-weight: 600;
    color: var(--text-primary);
}

.summary-row.summary-total {
    font-size: 1.25rem;
    color: var(--text-primary);
}

.summary-row.summary-total span:last-child {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.discount {
    color: var(--success) !important;
}

/* ===== SECURITY BADGES ===== */
.security-badges {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
    margin-bottom: 20px;
}

.badge-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 15px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--border-radius-sm);
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.badge-item i {
    color: var(--success);
    font-size: 1rem;
}

/* ===== TRUST INDICATORS ===== */
.trust-indicators {
    padding: 20px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: var(--border-radius-md);
}

.trust-indicators p {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.trust-indicators p:last-child {
    margin-bottom: 0;
}

.trust-indicators i {
    color: var(--success);
    font-size: 1rem;
}

/* ===== FOOTER ===== */
.checkout-footer {
    background: rgba(15, 23, 42, 0.95);
    border-top: 1px solid var(--border-color);
    padding: 25px 0;
    margin-top: 60px;
}

.checkout-footer .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.checkout-footer p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-light);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .checkout-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .checkout-summary-column {
        position: static;
    }
}

@media (max-width: 768px) {
    .checkout-main {
        padding: 40px 0;
    }

    .checkout-form-column,
    .order-summary {
        padding: 25px;
    }

    .form-title {
        font-size: 1.5rem;
    }

    .checkout-progress {
        margin-bottom: 30px;
    }

    .step-circle {
        width: 50px;
        height: 50px;
    }

    .step-circle i {
        font-size: 1.25rem;
    }

    .step-label {
        font-size: 0.6875rem;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .form-actions {
        flex-direction: column;
    }

    .checkout-footer .container {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .footer-links {
        flex-direction: column;
        gap: 10px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .checkout-form-column,
    .order-summary {
        padding: 20px;
    }

    .form-title {
        font-size: 1.25rem;
    }

    .logo {
        font-size: 1.25rem;
    }

    .header-security {
        font-size: 0.75rem;
    }

    .step-label {
        display: none;
    }

    .payment-method label {
        flex-direction: column;
        text-align: center;
    }

    .method-brands {
        justify-content: center;
    }
}