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

:root {
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --gradient-warning: linear-gradient(135deg, #f9ca24 0%, #f0932b 100%);
    --gradient-pix: linear-gradient(135deg, #00d4aa 0%, #00b894 100%);
    --gradient-card: linear-gradient(135deg, #3182ce 0%, #2c5aa0 100%);
    --gradient-boleto: linear-gradient(135deg, #ed8936 0%, #dd6b20 100%);
    --shadow-soft: 0 10px 40px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 15px 50px rgba(0, 0, 0, 0.15);
    --shadow-strong: 0 20px 60px rgba(0, 0, 0, 0.2);
    --border-radius: 20px;
    --border-radius-lg: 24px;
    --border-radius-sm: 12px;
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
}

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* Animated Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(120, 219, 226, 0.3) 0%, transparent 50%);
    z-index: -1;
    animation: backgroundMove 20s ease-in-out infinite;
}

@keyframes backgroundMove {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.1); }
}

/* Floating Elements */
.floating-element {
    position: absolute;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
    pointer-events: none;
}

.floating-element:nth-child(1) {
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.floating-element:nth-child(2) {
    top: 20%;
    right: 10%;
    animation-delay: 2s;
}

.floating-element:nth-child(3) {
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(10deg); }
}

/* Container */
.checkout-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-sm);
    position: relative;
    z-index: 1;
}

/* Header */
.checkout-header {
    text-align: center;
    margin-bottom: 4rem;
    opacity: 0;
    animation: fadeInUp 1s ease forwards;
}

.checkout-header h1 {
    font-size: 3.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
    position: relative;
}

.checkout-header h1::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.checkout-header p {
    font-size: 1.25rem;
    color: #64748b;
    font-weight: 400;
    margin-top: var(--spacing-md);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Main Grid */
.checkout-main {
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 4rem;
    align-items: start;
}

/* =====================================
   SEÇÃO ESPECÍFICA - DADOS PESSOAIS
===================================== */
.dados-pessoais-section {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-medium);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.section-title {
    color: #1e293b;
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.section-title::before {
    content: '';
    width: 4px;
    height: 28px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.section-subtitle {
    color: #64748b;
    font-size: 1rem;
    margin-bottom: var(--spacing-lg);
    font-weight: 400;
    line-height: 1.5;
}

/* =====================================
   SEÇÃO ESPECÍFICA - ENDEREÇO
===================================== */
.endereco-section {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-medium);
    border: 1px solid rgba(255, 255, 255, 0.3);
    position: relative;
}

.endereco-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #00d4aa, #667eea, #764ba2);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}

/* Campo CEP com destaque especial */
.cep-field-container {
    position: relative;
    margin-bottom: var(--spacing-lg);
}

.cep-field-container .form-control {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(248, 250, 252, 0.9));
    border: 3px solid #e2e8f0;
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
}

.cep-field-container .form-control:focus {
    border-color: #00d4aa;
    box-shadow: 0 0 0 4px rgba(0, 212, 170, 0.15);
    background: rgba(255, 255, 255, 0.98);
}

/* Estado de carregamento do endereço */
.loading-address {
    display: none;
    color: #667eea;
    font-size: 0.95rem;
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: rgba(102, 126, 234, 0.1);
    border-radius: var(--border-radius-sm);
    border-left: 4px solid #667eea;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* Exibição do endereço encontrado */
.address-display {
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.1), rgba(0, 184, 148, 0.1));
    border: 2px solid rgba(0, 212, 170, 0.3);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-md);
    margin-top: var(--spacing-sm);
    position: relative;
    overflow: hidden;
}

.address-display::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

.address-display strong {
    color: #059669;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    position: relative;
    z-index: 1;
}

/* Campos de endereço organizados */
.address-fields {
    display: none;
    animation: slideDown 0.5s ease forwards;
}

.address-fields.show {
    display: block;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
        max-height: 0;
    }
    to {
        opacity: 1;
        transform: translateY(0);
        max-height: 500px;
    }
}

.address-fields .row {
    margin-bottom: var(--spacing-md);
}

.address-fields .form-control[readonly] {
    background: rgba(248, 250, 252, 0.8);
    color: #64748b;
    font-weight: 500;
    border-style: dashed;
    cursor: not-allowed;
}

.address-fields .form-control:not([readonly]) {
    border-color: #00d4aa;
    background: rgba(255, 255, 255, 0.95);
}

.address-fields .form-control:not([readonly]):focus {
    border-color: #00b894;
    box-shadow: 0 0 0 4px rgba(0, 212, 170, 0.15);
}

/* Error states */
#address-error {
    background: rgba(220, 38, 38, 0.1);
    color: #dc2626;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    border-left: 4px solid #dc2626;
    margin-top: var(--spacing-sm);
    font-weight: 500;
}

/* =====================================
   BOTÕES DE NAVEGAÇÃO OTIMIZADOS
===================================== */
.navigation-buttons {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: rgba(248, 250, 252, 0.5);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
}

.btn-voltar {
    background: linear-gradient(135deg, #64748b 0%, #475569 100%);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    min-width: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    box-shadow: var(--shadow-soft);
    position: relative;
    overflow: hidden;
}

.btn-voltar::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition);
}

.btn-voltar:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
    background: linear-gradient(135deg, #475569 0%, #334155 100%);
}

.btn-voltar:hover::before {
    left: 100%;
}

.btn-continuar {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 1rem 2.5rem;
    border-radius: var(--border-radius-sm);
    font-weight: 700;
    font-size: 1.1rem;
    transition: var(--transition);
    min-width: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    box-shadow: var(--shadow-medium);
    position: relative;
    overflow: hidden;
}

.btn-continuar::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: var(--transition);
}

.btn-continuar:hover:not(:disabled) {
    transform: translateY(-4px);
    box-shadow: var(--shadow-strong);
}

.btn-continuar:hover:not(:disabled)::before {
    left: 100%;
}

.btn-continuar:disabled {
    background: linear-gradient(135deg, #94a3b8 0%, #64748b 100%);
    cursor: not-allowed;
    transform: none;
    box-shadow: var(--shadow-soft);
    opacity: 0.7;
}

.btn-continuar:disabled::before {
    display: none;
}

/* Security info entre os botões */
.security-info {
    display: flex;
    align-items: center;
    justify-content: center;
    color: #059669;
    font-size: 0.9rem;
    font-weight: 500;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: rgba(5, 150, 105, 0.1);
    border-radius: var(--border-radius-sm);
    border: 1px solid rgba(5, 150, 105, 0.2);
    margin: var(--spacing-lg) 0;
}

.security-info i {
    font-size: 1.1rem;
    animation: pulse 2s infinite;
}

/* =====================================
   PAYMENT METHODS SECTION
===================================== */
.payment-methods {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-medium);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.3);
    animation: slideInLeft 1s ease forwards;
    animation-delay: 0.3s;
    opacity: 0;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Payment Tabs */
.payment-tabs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    background: rgba(248, 250, 252, 0.5);
    backdrop-filter: blur(10px);
}

.payment-tab {
    padding: var(--spacing-lg) var(--spacing-md);
    background: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    color: #64748b;
    border-bottom: 4px solid transparent;
    position: relative;
    overflow: hidden;
}

.payment-tab::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: var(--transition);
}

.payment-tab:hover::before {
    left: 100%;
}

.payment-tab:hover:not(.tab-disabled) {
    background: rgba(255, 255, 255, 0.6);
    color: #334155;
    transform: translateY(-2px);
}

.payment-tab.active {
    background: rgba(255, 255, 255, 0.9);
    color: #1e293b;
    transform: translateY(-4px);
    box-shadow: var(--shadow-soft);
}

.payment-tab i {
    display: block;
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    transition: var(--transition);
}

.payment-tab.tab-pix i { color: #00d4aa; }
.payment-tab.tab-cartao i { color: #3182ce; }
.payment-tab.tab-boleto i { color: #ed8936; }

.payment-tab.active.tab-pix {
    border-bottom-color: #00d4aa;
    box-shadow: 0 15px 40px rgba(0, 212, 170, 0.3);
}

.payment-tab.active.tab-cartao {
    border-bottom-color: #3182ce;
    box-shadow: 0 15px 40px rgba(49, 130, 206, 0.3);
}

.payment-tab.active.tab-boleto {
    border-bottom-color: #ed8936;
    box-shadow: 0 15px 40px rgba(237, 131, 54, 0.3);
}

.payment-tab.tab-disabled {
    opacity: 0.4;
    cursor: not-allowed !important;
    transform: none !important;
}

.payment-tab.tab-disabled:hover {
    background: none;
    transform: none;
}

/* Payment Content */
.payment-content {
    padding: var(--spacing-xl);
}

.tab-content {
    display: none;
    animation: fadeIn 0.5s ease forwards;
}

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

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

/* PIX Highlight */
.pix-highlight, .cartao-highlight {
    background: var(--gradient-pix);
    color: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.cartao-highlight {
    background: var(--gradient-card);
}

.pix-highlight::before, .cartao-highlight::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: rotate 4s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.pix-highlight i, .cartao-highlight i {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    position: relative;
    z-index: 1;
}

.pix-highlight h5, .cartao-highlight h5 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    position: relative;
    z-index: 1;
}

.pix-highlight p, .cartao-highlight p {
    margin: 0;
    font-size: 1.1rem;
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

/* =====================================
   FORM STYLES MELHORADOS
===================================== */
.form-group {
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.form-label {
    font-weight: 600;
    color: #1e293b;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    font-size: 1rem;
    gap: var(--spacing-sm);
}

.form-label i {
    font-size: 1.1rem;
    color: #667eea;
}

.input-icon {
    position: relative;
}

.input-icon i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #64748b;
    z-index: 3;
    font-size: 1.1rem;
}

.input-icon .form-control {
    padding-left: 3rem;
}

.form-control, .form-select {
    padding: 1rem 1.25rem;
    border: 2px solid #e2e8f0;
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    transition: var(--transition);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    font-weight: 500;
    width: 100%;
}

.form-control:focus, .form-select:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
    background: rgba(255, 255, 255, 0.98);
    outline: none;
}

.form-control::placeholder {
    color: #94a3b8;
    font-weight: 400;
}

/* Validation states */
.form-control.is-invalid, .form-select.is-invalid {
    border-color: #dc2626;
    background: rgba(220, 38, 38, 0.05);
}

.form-control.is-valid, .form-select.is-valid {
    border-color: #059669;
    background: rgba(5, 150, 105, 0.05);
}

/* Payment section específica */
.payment-section {
    margin-top: var(--spacing-lg);
}

.payment-section .row {
    margin-bottom: var(--spacing-md);
}

/* Button Styles */
.btn-payment {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 1.25rem 2.5rem;
    border-radius: var(--border-radius);
    font-weight: 700;
    font-size: 1.1rem;
    width: 100%;
    transition: var(--transition);
    box-shadow: var(--shadow-medium);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.btn-payment::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition);
}

.btn-payment:hover:not(:disabled) {
    transform: translateY(-4px);
    box-shadow: var(--shadow-strong);
}

.btn-payment:hover:not(:disabled)::before {
    left: 100%;
}

.btn-payment:disabled {
    opacity: 0.7;
    transform: none;
    cursor: not-allowed;
}

/* Product Sidebar */
.product-sidebar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-medium);
    padding: var(--spacing-lg);
    height: fit-content;
    position: sticky;
    top: var(--spacing-lg);
    border: 1px solid rgba(255, 255, 255, 0.3);
    animation: slideInRight 1s ease forwards;
    animation-delay: 0.6s;
    opacity: 0;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.product-image {
    width: 100%;
    height: 240px;
    object-fit: cover;
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
    transition: var(--transition);
    box-shadow: var(--shadow-soft);
}

.product-image:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-medium);
}

.product-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

.product-description {
    color: #64748b;
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
    font-size: 1rem;
}

.price-display {
    padding: var(--spacing-lg);
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--border-radius);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

.price-display::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
    z-index: -1;
}

.price-label {
    font-size: 1rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

.price-value {
    font-size: 3rem;
    font-weight: 800;
    margin: 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.security-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    color: #059669;
    font-weight: 600;
    font-size: 1rem;
    padding: var(--spacing-sm);
    background: rgba(5, 150, 105, 0.1);
    border-radius: var(--border-radius-sm);
    border: 2px solid rgba(5, 150, 105, 0.2);
}

.security-badge i {
    font-size: 1.2rem;
}

/* =====================================
   MODAL STYLES
===================================== */
.modal-pix .modal-dialog {
    max-width: 520px;
    margin: var(--spacing-sm) auto;
}

.modal-pix .modal-content {
    border-radius: var(--border-radius-lg);
    border: none;
    box-shadow: var(--shadow-strong);
    min-height: 700px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
}

.modal-pix .modal-header {
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
    padding: var(--spacing-lg);
    border-bottom: none;
}

.modal-pix .modal-title {
    font-weight: 700;
    font-size: 1.4rem;
}

.modal-pix .btn-close {
    filter: brightness(0) invert(1);
    opacity: 0.8;
    font-size: 1.2rem;
}

.modal-pix .modal-body {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* Countdown Section */
.countdown-section {
    text-align: center;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(248, 249, 255, 0.8), rgba(237, 242, 255, 0.8));
    border-radius: var(--border-radius);
    border: 2px solid rgba(102, 126, 234, 0.1);
    position: relative;
    overflow: hidden;
}

.countdown-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

.countdown-timer {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: var(--spacing-sm) 0;
    letter-spacing: 3px;
    position: relative;
}

.progress {
    height: 12px;
    border-radius: 10px;
    background-color: rgba(233, 236, 239, 0.5);
    overflow: hidden;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.progress-bar {
    transition: width 1s ease-in-out;
    border-radius: 10px;
    background: var(--gradient-success);
    position: relative;
    overflow: hidden;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background-image: linear-gradient(
        -45deg,
        rgba(255, 255, 255, 0.2) 25%,
        transparent 25%,
        transparent 50%,
        rgba(255, 255, 255, 0.2) 50%,
        rgba(255, 255, 255, 0.2) 75%,
        transparent 75%,
        transparent
    );
    background-size: 30px 30px;
    animation: move 2s linear infinite;
}

@keyframes move {
    0% { background-position: 0 0; }
    100% { background-position: 30px 30px; }
}

/* QR Code Section */
.qr-code-section {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 320px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: var(--border-radius);
    border: 3px dashed rgba(102, 126, 234, 0.3);
    padding: var(--spacing-lg);
    transition: var(--transition);
}

.qr-code-section:hover {
    border-color: rgba(102, 126, 234, 0.5);
    background: rgba(255, 255, 255, 0.95);
}

.modal-pix-image {
    max-width: 260px !important;
    max-height: 260px !important;
    width: auto !important;
    height: auto !important;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
    background: white;
    padding: 12px;
    transition: var(--transition);
}

.modal-pix-image:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-strong);
}

/* Amount Display */
.amount-display {
    text-align: center;
    background: var(--gradient-success);
    color: white;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin: var(--spacing-md) 0;
    position: relative;
    overflow: hidden;
}

.amount-display::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: shine 2s infinite;
}

@keyframes shine {
    0% { left: -100%; }
    100% { left: 100%; }
}

.amount-display .price-label {
    font-size: 1rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

.amount-display .amount-value {
    font-size: 2.2rem;
    font-weight: 800;
    margin: 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* PIX Code Container */
.pix-code-container {
    position: relative;
    background: rgba(248, 249, 250, 0.8);
    border: 2px solid rgba(233, 236, 239, 0.8);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-top: var(--spacing-md);
    backdrop-filter: blur(10px);
}

.pix-code-label {
    font-size: 1rem;
    color: #64748b;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.pix-code-label i {
    color: #667eea;
}

.pix-code {
    background: rgba(255, 255, 255, 0.9) !important;
    border: 2px solid rgba(222, 226, 230, 0.8) !important;
    border-radius: var(--border-radius-sm) !important;
    padding: var(--spacing-sm) !important;
    font-family: 'Courier New', monospace !important;
    font-size: 0.8rem !important;
    word-break: break-all !important;
    line-height: 1.5 !important;
    color: #495057 !important;
    min-height: 80px !important;
    overflow-wrap: break-word !important;
    margin-bottom: 3rem !important;
    font-weight: 500 !important;
}

.copy-button {
    position: absolute;
    bottom: var(--spacing-sm);
    right: var(--spacing-sm);
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-soft);
}

.copy-button:hover {
    transform: scale(1.1) rotate(5deg);
    box-shadow: var(--shadow-medium);
}

.copy-button.copied {
    background: var(--gradient-success);
    animation: buttonPulse 0.6s ease;
}

@keyframes buttonPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

/* Instructions */
.info-alert {
    background: var(--gradient-secondary);
    color: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin-top: var(--spacing-md);
    position: relative;
    overflow: hidden;
}

.info-alert::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: rotate 6s linear infinite;
}

.info-alert strong {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
    font-weight: 700;
    position: relative;
    z-index: 1;
}

.info-alert ol {
    margin: 0;
    padding-left: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.info-alert li {
    margin-bottom: var(--spacing-xs);
    font-size: 1rem;
    line-height: 1.5;
}

/* Loading and Status States */
.loading-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    color: #64748b;
}

.spinner-border {
    width: 4rem !important;
    height: 4rem !important;
    border-width: 4px !important;
}

.status-content {
    text-align: center;
    padding: var(--spacing-xl);
}

.status-content.success { color: #059669; }
.status-content.error { color: #dc2626; }

.status-content .fa-4x {
    font-size: 5rem;
    margin-bottom: var(--spacing-lg);
    animation: bounceIn 0.8s ease;
}

@keyframes bounceIn {
    0% { transform: scale(0); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

/* Coming Soon */
.coming-soon {
    text-align: center;
    padding: 4rem var(--spacing-lg);
    color: #64748b;
}

.coming-soon i {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.3;
    animation: pulse 2s infinite;
}

.coming-soon h5 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.coming-soon p {
    font-size: 1.1rem;
    opacity: 0.8;
}

/* =====================================
   VALIDATION & FEEDBACK STYLES
===================================== */
.validation-message {
    margin-top: var(--spacing-sm);
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
}

.validation-message.valid {
    color: #059669;
    background: rgba(5, 150, 105, 0.1);
    border: 1px solid rgba(5, 150, 105, 0.2);
}

.validation-message.invalid {
    color: #dc2626;
    background: rgba(220, 38, 38, 0.1);
    border: 1px solid rgba(220, 38, 38, 0.2);
}

.valid-cpf {
    border-color: #059669 !important;
    background-color: rgba(5, 150, 105, 0.05) !important;
}

.invalid-cpf {
    border-color: #dc2626 !important;
    background-color: rgba(220, 38, 38, 0.05) !important;
}

/* Suggestions */
.suggestions-container {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border: 2px solid rgba(233, 236, 239, 0.8);
    border-top: none;
    border-radius: 0 0 var(--border-radius-sm) var(--border-radius-sm);
    max-height: 220px;
    overflow-y: auto;
    z-index: 1000;
    display: none;
    box-shadow: var(--shadow-soft);
}

.suggestion-item {
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    border-bottom: 1px solid rgba(233, 236, 239, 0.5);
    transition: var(--transition);
    display: flex;
    align-items: center;
    font-size: 0.95rem;
}

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

.suggestion-item:hover {
    background: rgba(102, 126, 234, 0.1);
    transform: translateX(4px);
}

.suggestion-item.highlighted {
    background: var(--gradient-primary);
    color: white;
    transform: translateX(8px);
}

.suggestion-email {
    font-weight: 600;
    color: #1e293b;
}

.suggestion-item.highlighted .suggestion-email {
    color: white;
}

.provider-icon {
    width: 20px;
    height: 20px;
    margin-right: var(--spacing-sm);
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Loading Spinner */
.loading-spinner {
    display: inline-block;
    width: 1.2rem;
    height: 1.2rem;
    border: 3px solid transparent;
    border-top: 3px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* SSL Badge */
.ssl-badge {
    text-align: center;
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: rgba(248, 250, 252, 0.5);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
}

.ssl-badge img {
    max-width: 200px;
    height: auto;
    margin-bottom: var(--spacing-sm);
}

.ssl-badge .text-muted {
    font-size: 0.85rem;
    color: #64748b;
    line-height: 1.5;
}

/* Footer */
.checkout-footer {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-sm) var(--spacing-lg);
    margin-top: 4rem;
    border-top: 1px solid rgba(226, 232, 240, 0.5);
    color: #64748b;
    font-size: 0.95rem;
    position: relative;
}

.checkout-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 1px;
    background: var(--gradient-primary);
}

.secure-info {
    margin-top: var(--spacing-md);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    color: #059669;
    font-weight: 500;
}

.lock-icon {
    font-size: 1.1rem;
}

/* =====================================
   RESPONSIVE DESIGN
===================================== */
@media (max-width: 1200px) {
    .checkout-main {
        grid-template-columns: 1fr 380px;
        gap: var(--spacing-xl);
    }
}

@media (max-width: 992px) {
    .checkout-container {
        padding: var(--spacing-md);
    }

    .checkout-main {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .product-sidebar {
        order: -1;
        position: static;
        margin-bottom: var(--spacing-lg);
    }

    .payment-tabs {
        grid-template-columns: 1fr;
    }

    .payment-tab {
        text-align: left;
        padding: var(--spacing-md) var(--spacing-lg);
        border-bottom: none;
        border-left: 4px solid transparent;
    }

    .payment-tab i {
        display: inline-block;
        margin-right: var(--spacing-sm);
        margin-bottom: 0;
        font-size: 1.5rem;
    }

    .payment-tab.active.tab-pix {
        border-left-color: #00d4aa;
        border-bottom-color: transparent;
    }

    .payment-tab.active.tab-cartao {
        border-left-color: #3182ce;
        border-bottom-color: transparent;
    }

    .payment-tab.active.tab-boleto {
        border-left-color: #ed8936;
        border-bottom-color: transparent;
    }

    .checkout-header h1 {
        font-size: 2.8rem;
    }

    .payment-content {
        padding: var(--spacing-lg);
    }

    .navigation-buttons {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .navigation-buttons .btn-continuar,
    .navigation-buttons .btn-voltar {
        width: 100%;
        order: 1;
    }

    .navigation-buttons .btn-voltar {
        order: 2;
    }
}

@media (max-width: 768px) {
    .checkout-header h1 {
        font-size: 2.2rem;
    }

    .checkout-header p {
        font-size: 1.1rem;
    }

    .dados-pessoais-section,
    .endereco-section {
        padding: var(--spacing-lg);
    }

    .payment-content {
        padding: var(--spacing-md);
    }

    .product-sidebar {
        padding: var(--spacing-lg);
    }

    .price-value {
        font-size: 2.5rem;
    }

    .modal-pix .modal-dialog {
        margin: var(--spacing-xs);
        max-width: calc(100vw - 1rem);
    }

    .modal-pix .modal-content {
        min-height: calc(100vh - 1rem);
        border-radius: 16px;
    }

    .modal-pix .modal-body {
        padding: var(--spacing-lg) var(--spacing-md);
        gap: var(--spacing-md);
    }

    .qr-code-section {
        min-height: 280px;
        padding: var(--spacing-lg);
    }

    .modal-pix-image {
        max-width: 200px !important;
        max-height: 200px !important;
    }

    .countdown-timer {
        font-size: 2rem;
    }

    .amount-display .amount-value {
        font-size: 1.8rem;
    }

    .pix-code {
        font-size: 0.75rem !important;
        padding: var(--spacing-sm) !important;
        min-height: 70px !important;
    }

    .copy-button {
        width: 44px;
        height: 44px;
    }

    .info-alert {
        padding: var(--spacing-md);
    }
}

@media (max-width: 576px) {
    .checkout-container {
        padding: var(--spacing-sm);
    }

    .checkout-header {
        margin-bottom: var(--spacing-xl);
    }

    .checkout-header h1 {
        font-size: 1.8rem;
    }

    .checkout-header p {
        font-size: 1rem;
    }

    .dados-pessoais-section,
    .endereco-section {
        padding: var(--spacing-md);
    }

    .payment-tab {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.9rem;
    }

    .payment-content {
        padding: var(--spacing-sm);
    }

    .form-control, .form-select {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.95rem;
    }

    .input-icon .form-control {
        padding-left: 2.5rem;
    }

    .input-icon i {
        left: var(--spacing-sm);
        font-size: 1rem;
    }

    .btn-payment {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: 1.1rem;
    }

    .btn-continuar,
    .btn-voltar {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: 1rem;
        min-width: auto;
    }

    .product-sidebar {
        padding: var(--spacing-md);
    }

    .product-image {
        height: 200px;
    }

    .price-display {
        padding: var(--spacing-md);
    }

    .price-value {
        font-size: 2rem;
    }

    .modal-pix .modal-header {
        padding: var(--spacing-md);
    }

    .modal-pix .modal-title {
        font-size: 1.2rem;
    }

    .countdown-timer {
        font-size: 1.6rem;
        letter-spacing: 2px;
    }

    .amount-display .amount-value {
        font-size: 1.6rem;
    }

    .navigation-buttons {
        padding: var(--spacing-md);
        margin-top: var(--spacing-lg);
    }
}

@media (max-height: 700px) and (min-width: 577px) {
    .modal-pix .modal-content {
        min-height: 90vh;
    }
    
    .modal-pix .modal-body {
        gap: var(--spacing-md);
    }
    
    .qr-code-section {
        min-height: 240px;
    }

    .countdown-section {
        padding: var(--spacing-sm);
    }

    .info-alert {
        padding: var(--spacing-md);
    }
}

/* =====================================
   ACCESSIBILITY & PERFORMANCE
===================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@media (prefers-contrast: high) {
    .form-control,
    .form-select {
        border-width: 3px;
    }

    .payment-tab {
        border-bottom-width: 5px;
    }

    .btn-payment,
    .btn-continuar,
    .btn-voltar {
        border: 3px solid transparent;
    }
}

/* Focus states for keyboard navigation */
.form-control:focus,
.form-select:focus,
.btn-payment:focus,
.btn-continuar:focus,
.btn-voltar:focus,
.payment-tab:focus {
    outline: 3px solid rgba(102, 126, 234, 0.5);
    outline-offset: 2px;
}

/* Error message alert */
#erro {
    background: rgba(220, 38, 38, 0.1);
    border: 2px solid rgba(220, 38, 38, 0.3);
    color: #dc2626;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-sm);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

#erro::before {
    content: '⚠️';
    font-size: 1.2rem;
}