/**
 * RS Clínica - Landing Page Stylesheet
 * Design moderno, responsivo e otimizado
 */

/* ========================================
   RESET & BASE
======================================== */

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

:root {
    /* Cores principais */
    --primary: #4F46E5;
    --primary-dark: #4338CA;
    --primary-light: #6366F1;
    --secondary: #06B6D4;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    
    /* Cores neutras */
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* Tipografia */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Poppins', var(--font-sans);
    
    /* Espaçamentos */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Bordas */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    
    /* Transições */
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-700);
    background: #fff;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    color: var(--gray-900);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--primary-dark);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ========================================
   LOADING SPINNER
======================================== */

.loading-spinner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-spinner p {
    margin-top: var(--spacing-md);
    color: var(--gray-600);
    font-weight: 500;
}

/* ========================================
   UTILITIES
======================================== */

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-2xl);
}

.section-header__label {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.section-header__title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.section-header__subtitle {
    font-size: 1.125rem;
    color: var(--gray-600);
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========================================
   BUTTONS
======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    text-decoration: none;
    white-space: nowrap;
}

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

.btn--primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

.btn--ghost {
    background: transparent;
    color: var(--gray-700);
}

.btn--ghost:hover {
    background: var(--gray-100);
}

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

.btn--white:hover {
    background: var(--gray-50);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

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

/* ========================================
   NAVBAR
======================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
    transition: var(--transition);
}

.navbar--scrolled {
    box-shadow: var(--shadow-md);
}

.navbar__content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.navbar__logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.navbar__logo i {
    font-size: 1.75rem;
}

.navbar__menu {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.navbar__link {
    font-weight: 500;
    color: var(--gray-700);
    transition: var(--transition);
}

.navbar__link:hover {
    color: var(--primary);
}

.navbar__actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.navbar__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.navbar__toggle span {
    width: 25px;
    height: 2px;
    background: var(--gray-700);
    transition: var(--transition);
}

.navbar__toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.navbar__toggle.active span:nth-child(2) {
    opacity: 0;
}

.navbar__toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* ========================================
   HERO
======================================== */

.hero {
    padding: calc(80px + var(--spacing-3xl)) 0 var(--spacing-3xl);
    background: linear-gradient(135deg, #F9FAFB 0%, #EEF2FF 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: radial-gradient(circle at 30% 50%, rgba(79, 70, 229, 0.08) 0%, transparent 50%);
}

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

.hero__title {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
}

.hero__subtitle {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: var(--spacing-xl);
}

.hero__cta {
    display: flex;
    gap: 1rem;
    margin-bottom: var(--spacing-xl);
}

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

.trust-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--gray-600);
}

.trust-badge i {
    color: var(--success);
    font-size: 1.25rem;
}

.hero__image {
    position: relative;
}

.hero__mockup {
    width: 100%;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

.hero__float {
    position: absolute;
    background: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    font-size: 0.875rem;
}

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

.hero__float--1 {
    top: 10%;
    left: -10%;
}

.hero__float--2 {
    top: 50%;
    right: -10%;
}

.hero__float--3 {
    bottom: 10%;
    left: 10%;
}

/* ========================================
   STATS
======================================== */

.stats {
    padding: var(--spacing-2xl) 0;
    background: white;
}

.stats__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.stat {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--gray-50);
    border-radius: var(--radius-xl);
    transition: var(--transition);
}

.stat:hover {
    background: white;
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.stat__icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: var(--radius-lg);
    flex-shrink: 0;
}

.stat__icon i {
    font-size: 1.75rem;
    color: white;
}

.stat__number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 0.25rem;
}

.stat__label {
    font-size: 0.875rem;
    color: var(--gray-600);
}

/* ========================================
   FEATURES
======================================== */

.features {
    background: white;
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.feature-card {
    padding: var(--spacing-xl);
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    transition: var(--transition);
}

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

.feature-card__icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
}

.feature-card__icon i {
    font-size: 1.75rem;
}

.feature-card__title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.feature-card__description {
    font-size: 0.9375rem;
    color: var(--gray-600);
}

/* ========================================
   PRICING
======================================== */

.pricing {
    background: var(--gray-50);
}

.pricing__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.pricing-loading {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl);
    color: var(--gray-600);
}

.pricing-card {
    position: relative;
    background: white;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: var(--transition);
}

.pricing-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-xl);
    transform: translateY(-10px);
}

.pricing-card--featured {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.pricing-card__badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.375rem 1rem;
    border-radius: 999px;
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

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

.pricing-card__name {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.pricing-card__description {
    color: var(--gray-600);
}

.pricing-card__price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
}

.pricing-card__currency {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-600);
}

.pricing-card__amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--gray-900);
}

.pricing-card__period {
    font-size: 1rem;
    color: var(--gray-600);
}

.pricing-card__features {
    list-style: none;
    margin-bottom: var(--spacing-lg);
}

.pricing-card__features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 0;
    font-size: 0.9375rem;
}

.pricing-card__features i {
    color: var(--success);
    font-size: 1.125rem;
}

.pricing__period-selector {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-xl);
}

.period-toggle {
    display: inline-flex;
    background: white;
    border-radius: var(--radius-full);
    padding: 0.375rem;
    box-shadow: var(--shadow-md);
    gap: 0.5rem;
}

.period-toggle__btn {
    position: relative;
    padding: 0.75rem 2rem;
    border: none;
    background: transparent;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--gray-600);
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.period-toggle__btn:hover {
    color: var(--gray-900);
}

.period-toggle__btn.active {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    box-shadow: var(--shadow-sm);
}

.period-toggle__badge {
    display: block;
    font-size: 0.75rem;
    font-weight: 500;
    margin-top: 0.125rem;
    opacity: 0.9;
}

.pricing__footnote {
    text-align: center;
    margin-top: var(--spacing-xl);
    color: var(--gray-600);
}

.pricing__footnote i {
    color: var(--primary);
    margin-right: 0.5rem;
}

/* ========================================
   CTA
======================================== */

.cta {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    text-align: center;
}

.cta__title {
    font-size: 2.5rem;
    color: white;
    margin-bottom: var(--spacing-md);
}

.cta__subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
}

/* ========================================
   FOOTER
======================================== */

.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer__logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: var(--spacing-md);
}

.footer__logo i {
    font-size: 1.75rem;
}

.footer__description {
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.footer__social {
    display: flex;
    gap: 0.75rem;
}

.footer__social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-800);
    border-radius: var(--radius-md);
    color: var(--gray-400);
    transition: var(--transition);
}

.footer__social-link:hover {
    background: var(--primary);
    color: white;
}

.footer__title {
    color: white;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
}

.footer__links {
    list-style: none;
}

.footer__links li {
    margin-bottom: 0.5rem;
}

.footer__links a {
    color: var(--gray-400);
    transition: var(--transition);
}

.footer__links a:hover {
    color: white;
}

.footer__bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--gray-800);
}

.footer__legal {
    display: flex;
    gap: var(--spacing-md);
}

/* ========================================
   WHATSAPP FLOAT BUTTON
======================================== */

.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #25D366 0%, #1ebe57 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    z-index: 10000;
    transition: var(--transition);
    text-decoration: none;
    animation: whatsappPulse 2s infinite;
}

.whatsapp-float:hover {
    background: linear-gradient(135deg, #1ebe57 0%, #128c3a 100%);
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
    color: white;
}

.whatsapp-float i {
    animation: none; /* Desabilitar animação padrão do ícone */
}

@keyframes whatsappPulse {
    0%, 100% {
        box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    }
    50% {
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.7), 0 0 0 10px rgba(37, 211, 102, 0.1);
    }
}

/* Tooltip ao passar o mouse */
.whatsapp-float::before {
    content: 'Fale conosco!';
    position: absolute;
    right: 70px;
    background: var(--gray-900);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
    font-family: var(--font-sans);
}

.whatsapp-float:hover::before {
    opacity: 1;
}

/* Responsivo */
@media (max-width: 768px) {
    .whatsapp-float {
        bottom: 20px;
        right: 20px;
        width: 56px;
        height: 56px;
        font-size: 1.75rem;
    }
    
    .whatsapp-float::before {
        display: none; /* Esconder tooltip em mobile */
    }
}

/* ========================================
   RESPONSIVE
======================================== */

@media (max-width: 1024px) {
    .section-header__title {
        font-size: 2rem;
    }
    
    .hero__title {
        font-size: 2.5rem;
    }
    
    .features__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .period-toggle__btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.875rem;
    }
    
    .period-toggle__badge {
        display: none;
    }
    
    .navbar__menu,
    .navbar__actions {
        display: none;
    }
    
    .navbar__toggle {
        display: flex;
    }
    
    .navbar__menu.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: white;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero__cta {
        justify-content: center;
        flex-direction: column;
    }
    
    .hero__trust {
        justify-content: center;
    }
    
    .hero__image {
        order: -1;
    }
    
    .stats__grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features__grid {
        grid-template-columns: 1fr;
    }
    
    .pricing__grid {
        grid-template-columns: 1fr;
    }
    
    .footer__grid {
        grid-template-columns: 1fr;
    }
    
    .footer__bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .section-header__title {
        font-size: 1.75rem;
    }
    
    .hero__title {
        font-size: 2rem;
    }
    
    .stats__grid {
        grid-template-columns: 1fr;
    }
    
    .stat {
        flex-direction: column;
        text-align: center;
    }
}