/* ========================================
   SITE PRINCIPAL NUTRIX - DESIGN SYSTEM
   Inspirado em: Athenahealth, iClinic, Memed, Feegow, Doctoralia
   ======================================== */

/* Variáveis CSS - Novo Design System */
:root {
    /* Cores Primárias - Sistema NutriX */
    --primary: #0F5C5C;
    --primary-dark: #0a4a4a;
    --primary-light: #8EC4B8;
    --secondary: #28a745;
    --accent: #F4A261;

    /* Cores Neutras - Design System do Login */
    --text: #1a1a1a;
    --text-light: #666;
    --background: #ffffff;
    --background-alt: #F7F5F2;
    --border: rgba(0, 0, 0, 0.1);
    --border-focus: rgba(15, 92, 92, 0.3);

    /* Espaçamentos */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    /* Componentes */
    --radius: 8px;
    --radius-md: 12px;
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-md: 0 10px 15px -3px rgba(0,0,0,0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0,0,0,0.1);

    /* Transições */
    --transition: all 0.2s ease;
}

/* ========================================
   PADRÃO DE ÍCONES - Design System do Login
   ======================================== */

/* SVG Icons - Padrão do Login */
svg[width="16"][height="16"],
svg.icon,
.icon svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
    vertical-align: middle;
}

.module-icon svg,
.feature-icon svg,
.navbar-brand svg {
    width: 18px;
    height: 18px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
}

.fas, .far, .fab {
    font-size: 1rem;
    line-height: 1;
    vertical-align: middle;
}

/* Reset e Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', sans-serif;
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    background: var(--background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Header/Navigation */
.website-header {
    background: #fff;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    padding: var(--spacing-sm) 0;
}

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

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    text-decoration: none;
    color: var(--primary);
    font-weight: 700;
    font-size: 1.5rem;
}

.navbar-brand img {
    height: 90px;
}

.logo-text {
    font-weight: 700;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.navbar-link {
    text-decoration: none;
    color: var(--text-light);
    font-weight: 500;
    transition: var(--transition);
    padding: var(--spacing-xs) var(--spacing-sm);
}

.navbar-link:hover,
.navbar-link.active {
    color: var(--primary);
}

.navbar-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-left: var(--spacing-md);
}

.navbar-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

.navbar-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary);
    transition: var(--transition);
}

/* Componentes Reutilizáveis - Buttons */
.btn {
    padding: 12px 24px;
    border-radius: var(--radius);
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    border: 1px solid transparent;
    cursor: pointer;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--text);
    border-color: var(--border);
}

.btn-outline:hover {
    background: var(--background-alt);
    border-color: var(--primary);
    color: var(--primary);
}

.btn-link {
    background: transparent;
    color: var(--primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border: none;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* Hero Section */
.hero-section {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text {
    z-index: 2;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.hero-title .highlight,
.hero-title .text-gradient {
    background: linear-gradient(135deg, #10b981 0%, #f59e0b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.hero-section .btn-primary,
.hero-section .btn-outline {
    color: white !important;
}

.hero-section .btn-outline {
    border-color: rgba(255, 255, 255, 0.5);
    background: transparent;
}

.hero-section .btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
    color: white !important;
}

.hero-features {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.9rem;
}

.feature-item i {
    color: var(--secondary);
}

.hero-image {
    position: relative;
}

.dashboard-preview {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-lg);
}

.dashboard-preview img {
    width: 100%;
    border-radius: var(--radius);
}

.preview-placeholder {
    text-align: center;
    padding: var(--spacing-xl);
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 300px;
}

.preview-placeholder i {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
}

.preview-placeholder p {
    font-size: 1.1rem;
    font-weight: 500;
    opacity: 0.9;
}

.hero-stats {
    display: flex;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255,255,255,0.2);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat strong {
    font-size: 2rem;
    font-weight: 700;
    color: var(--secondary);
}

.stat span {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* Recursos/Módulos Section */
.modules-section {
    padding: var(--spacing-2xl) 0;
    background: var(--background-alt);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text);
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-light);
}

.modules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.module-card,
.feature-card {
    background: #fff;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border);
}

.module-card:hover,
.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.module-icon,
.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    color: white;
    font-size: 1.5rem;
}

.module-card h3,
.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text);
}

.module-card p,
.feature-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Como Funciona Section */
.how-it-works-section {
    padding: var(--spacing-2xl) 0;
    background: #fff;
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.step {
    display: flex;
    gap: var(--spacing-md);
    align-items: start;
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
    box-shadow: var(--shadow);
}

.step-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text);
}

.step-content p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Planos e Preços */
.pricing-section {
    padding: var(--spacing-2xl) 0;
    background: var(--background-alt);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.pricing-card {
    background: #fff;
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
    position: relative;
    transition: var(--transition);
    border: 2px solid var(--border);
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.pricing-card.popular {
    border-color: var(--primary);
    transform: scale(1.05);
}

.pricing-card.popular::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent);
    color: #fff;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 600;
    box-shadow: var(--shadow);
}

.pricing-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.pricing-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text);
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
}

.price .amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary);
}

.price .period {
    font-size: 1rem;
    color: var(--text-light);
}

.pricing-features ul,
.features-list {
    list-style: none;
    margin: var(--spacing-lg) 0;
}

.pricing-features li,
.features-list li {
    padding: var(--spacing-sm) 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text);
}

.pricing-features li::before,
.features-list li::before {
    content: '✓';
    width: 24px;
    height: 24px;
    background: var(--secondary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    flex-shrink: 0;
}

.pricing-footer {
    text-align: center;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border);
}

.pricing-footer p {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Depoimentos */
.testimonials-section {
    padding: var(--spacing-2xl) 0;
    background: #fff;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.testimonial-card {
    background: #fff;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.testimonial-content {
    margin-bottom: var(--spacing-lg);
}

.testimonial-content p {
    font-style: italic;
    color: var(--text);
    line-height: 1.6;
    font-size: 1.0625rem;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.author-avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

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

.author-info strong {
    color: var(--text);
    font-weight: 600;
    margin-bottom: 2px;
}

.author-info span {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* Checkout Section */
.checkout-section {
    padding: var(--spacing-2xl) 0;
    background: var(--background-alt);
}

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

.checkout-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text);
}

.checkout-grid,
.checkout-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.checkout-form {
    background: #fff;
    padding: var(--spacing-xl);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
}

.form-section {
    margin-bottom: var(--spacing-xl);
}

.form-section h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(15, 92, 92, 0.1);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.payment-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.payment-option,
.payment-method {
    position: relative;
    cursor: pointer;
}

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

.payment-option label,
.payment-method label {
    display: block;
    cursor: pointer;
}

.payment-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    transition: var(--transition);
    text-align: center;
    cursor: pointer;
}

.payment-content i {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: var(--spacing-xs);
}

.payment-option input[type="radio"]:checked + .payment-content,
.payment-method input[type="radio"]:checked + .payment-content {
    border-color: var(--primary);
    background: rgba(15, 92, 92, 0.05);
}

.payment-content span {
    font-weight: 600;
    color: var(--text);
}

.payment-content small {
    font-size: 0.75rem;
    color: var(--text-light);
}

.checkbox-label {
    display: flex;
    align-items: start;
    gap: var(--spacing-xs);
    cursor: pointer;
    font-size: 0.9rem;
}

.checkbox-label input[type="checkbox"] {
    margin-top: 4px;
    cursor: pointer;
}

.order-summary,
.checkout-summary {
    background: #fff;
    padding: var(--spacing-xl);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    height: fit-content;
    position: sticky;
    top: 100px;
}

.order-summary h3,
.checkout-summary h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--text);
}

.summary-content {
    margin-bottom: var(--spacing-lg);
}

.summary-item {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border);
    color: var(--text);
}

.summary-item span:first-child {
    color: var(--text-light);
}

.summary-total {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
    margin-top: var(--spacing-md);
    border-top: 2px solid var(--border);
}

.summary-total strong {
    font-size: 1.5rem;
    color: var(--primary);
}

.summary-total small {
    display: block;
    font-size: 0.875rem;
    color: var(--text-light);
    margin-top: 4px;
}

.security-badges {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border);
}

.badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-light);
    font-size: 0.875rem;
}

.badge i {
    color: var(--secondary);
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: var(--spacing-2xl) 0;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

/* Footer */
.website-footer {
    background: var(--text);
    color: white;
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .logo {
    height: 40px;
    margin-bottom: var(--spacing-md);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

.footer-links,
.link-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.link-group h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.link-group a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.link-group a:hover {
    color: white;
    padding-left: 4px;
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    color: white;
    text-decoration: none;
}

.social-links a:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
}

/* Alerts */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.alert-success {
    background: #d4edda;
    border-left: 4px solid #28a745;
    color: #155724;
}

.alert-error {
    background: #f8d7da;
    border-left: 4px solid #dc3545;
    color: #721c24;
}

.alert-info {
    background: #d1ecf1;
    border-left: 4px solid #17a2b8;
    color: #0c5460;
}

/* Responsive */
@media (max-width: 1024px) {
    .checkout-grid,
    .checkout-content {
        grid-template-columns: 1fr;
    }

    .order-summary,
    .checkout-summary {
        position: static;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .navbar-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-md);
        align-items: flex-start;
    }

    .navbar-menu.active {
        display: flex;
    }

    .navbar-toggle {
        display: flex;
    }

    .hero-content {
        grid-template-columns: 1fr;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }

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

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

    .pricing-card.popular {
        transform: none;
    }

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

    .cta-content h2 {
        font-size: 1.75rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .section-header h2 {
        font-size: 2rem;
    }
}