/* ==========================================================================
   SAÚDE AQUI - ESTILOS PRINCIPAIS
   Cores baseadas no logo: Azul Marinho, Turquesa e Vermelho
   ========================================================================== */

/* Variáveis de Cores */
:root {
    --primary-blue: #1B3A5D;
    --primary-blue-light: #2a4d73;
    --primary-blue-dark: #142c47;
    --secondary-teal: #5BBFC5;
    --secondary-teal-light: #7fd1d6;
    --secondary-teal-dark: #4aa8ad;
    --accent-red: #E63946;
    --accent-red-light: #ef5a66;
    --accent-red-dark: #c62936;

    --white: #ffffff;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;

    --shadow-sm: 0 2px 4px rgba(27, 58, 93, 0.1);
    --shadow-md: 0 4px 12px rgba(27, 58, 93, 0.15);
    --shadow-lg: 0 8px 24px rgba(27, 58, 93, 0.2);
    --shadow-xl: 0 12px 48px rgba(27, 58, 93, 0.25);

    --transition: all 0.3s ease;
    --border-radius: 8px;
    --border-radius-lg: 16px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Tipografia */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--primary-blue);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

/* Botões */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--secondary-teal), var(--secondary-teal-dark));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(91, 191, 197, 0.4);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--secondary-teal-light), var(--secondary-teal));
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(91, 191, 197, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

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

.btn-portal {
    background: rgba(255, 255, 255, 0.92);
    color: var(--primary-blue);
    border: none;
}

.btn-portal:hover {
    background: #fff;
    color: var(--primary-blue-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, .15);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.btn-portal-header {
    padding: 10px 16px;
    background: transparent;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
    border-radius: var(--border-radius);
    font-weight: 500;
    font-size: .875rem;
    white-space: nowrap;
    transition: var(--transition);
}

.btn-portal-header:hover {
    background: var(--primary-blue);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-whatsapp {
    background: #25d366;
    color: var(--white);
}

.btn-whatsapp:hover {
    background: #128c7e;
    transform: translateY(-2px);
}

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

.btn-phone:hover {
    background: var(--primary-blue-light);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

/* Section Tag */
.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, rgba(91, 191, 197, 0.1), rgba(230, 57, 70, 0.1));
    color: var(--secondary-teal);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 12px;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px;
}

.section-header h2 {
    margin-bottom: 16px;
}

.section-header p {
    color: var(--gray-600);
    font-size: 1.1rem;
}

.section-header.light h2,
.section-header.light p {
    color: var(--white);
}

.section-header.light .section-tag {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
}

/* ==========================================================================
   TOP BAR
   ========================================================================== */
.top-bar {
    background: var(--primary-blue);
    padding: 10px 0;
    font-size: 0.875rem;
}

.top-bar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.social-links {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--white);
}

.social-links span {
    opacity: 0.8;
}

.social-links a {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--white);
}

.social-links a:hover {
    background: var(--secondary-teal);
    transform: scale(1.1);
}

.top-contact {
    display: flex;
    gap: 20px;
}

.top-contact a {
    color: var(--white);
    display: flex;
    align-items: center;
    gap: 6px;
    opacity: 0.9;
}

.top-contact a:hover {
    opacity: 1;
    color: var(--secondary-teal);
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.header {
    background: var(--white);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.header.scrolled {
    padding: 10px 0;
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.logo {
    flex-shrink: 0;
}

.logo img {
    height: 56px;
    width: auto;
}

.nav-menu ul {
    display: flex;
    gap: 2px;
}

.nav-menu a {
    padding: 8px 12px;
    font-weight: 500;
    color: var(--gray-700);
    border-radius: var(--border-radius);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--secondary-teal);
    background: rgba(91, 191, 197, 0.1);
}

.btn-agendar {
    padding: 12px 24px;
    background: linear-gradient(135deg, var(--secondary-teal), var(--accent-red));
    color: var(--white);
    font-weight: 500;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 15px rgba(91, 191, 197, 0.3);
}

.btn-agendar:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(91, 191, 197, 0.4);
}

.mobile-menu-btn {
    display: none;
    width: 44px;
    height: 44px;
    background: var(--gray-100);
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.25rem;
    color: var(--primary-blue);
    cursor: pointer;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero {
    position: relative;
    min-height: 85vh;
    display: flex;
    flex-direction: column;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
}

.hero-slider {
    flex: 1;
    position: relative;
}

.hero-slide {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.hero-slide.active {
    opacity: 1;
}

.hero-slide::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('https://images.unsplash.com/photo-1631217868264-e5b90bb7e133?w=1920&h=1080&fit=crop') center/cover no-repeat;
    opacity: 0.15;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(27, 42, 94, 0.95) 0%, rgba(19, 29, 66, 0.9) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    padding: 60px 0;
}

.hero-content h1 {
    color: var(--white);
    font-size: 3.5rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content h1 span {
    background: linear-gradient(135deg, var(--secondary-teal), var(--accent-red));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.25rem;
    margin-bottom: 30px;
}

.hero-buttons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    max-width: 640px;
}

.hero-buttons .btn,
.hero-buttons .btn-portal {
    justify-content: center;
    text-align: center;
    width: 100%;
}

/* Hero Features */
.hero-features {
    background: var(--white);
    padding: 30px 0;
    position: relative;
    z-index: 10;
    margin-top: -60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    background: var(--white);
    padding: 40px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
}

.feature-item {
    text-align: center;
    padding: 20px;
}

.feature-item i {
    font-size: 3rem;
    background: linear-gradient(135deg, var(--secondary-teal), var(--accent-red));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
}

.feature-item h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.feature-item p {
    color: var(--gray-600);
    font-size: 0.9rem;
}

/* ==========================================================================
   SOBRE SECTION
   ========================================================================== */
.sobre {
    padding: 100px 0;
    background: var(--gray-100);
}

.sobre-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.sobre-image {
    position: relative;
}

.sobre-image img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

.experience-badge {
    position: absolute;
    bottom: -30px;
    right: -30px;
    width: 150px;
    height: 150px;
    background: linear-gradient(135deg, var(--secondary-teal), var(--accent-red));
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
    box-shadow: var(--shadow-lg);
}

.experience-badge .number {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1;
}

.experience-badge .text {
    font-size: 0.85rem;
    text-align: center;
    line-height: 1.3;
}

.sobre-text h2 {
    margin-bottom: 24px;
}

.sobre-text h2 span {
    color: var(--secondary-teal);
}

.sobre-text p {
    color: var(--gray-600);
    margin-bottom: 16px;
}

.sobre-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin: 30px 0;
}

.sobre-feature {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sobre-feature i {
    color: var(--secondary-teal);
    font-size: 1.25rem;
}

.sobre-feature span {
    font-weight: 500;
    color: var(--gray-700);
}

/* ==========================================================================
   ESPECIALIDADES SECTION
   ========================================================================== */
.especialidades {
    padding: 100px 0;
    background: var(--white);
}

.especialidades-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.especialidade-card {
    background: var(--white);
    padding: 30px;
    border-radius: var(--border-radius-lg);
    text-align: center;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.especialidade-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.especialidade-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, rgba(91, 191, 197, 0.1), rgba(230, 57, 70, 0.1));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.especialidade-icon i {
    font-size: 2rem;
    color: var(--secondary-teal);
    transition: var(--transition);
}

.especialidade-card:hover .especialidade-icon {
    background: linear-gradient(135deg, var(--secondary-teal), var(--accent-red));
}

.especialidade-card:hover .especialidade-icon i {
    color: var(--white);
}

.especialidade-card h3 {
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.especialidade-card p {
    color: var(--gray-600);
    font-size: 0.9rem;
}

/* ==========================================================================
   EXAMES SECTION
   ========================================================================== */
.exames {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-dark));
}

.exames-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.exame-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 40px 30px;
    border-radius: var(--border-radius-lg);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.exame-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.exame-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--secondary-teal), var(--accent-red));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.exame-icon i {
    font-size: 2rem;
    color: var(--white);
}

.exame-card h3 {
    color: var(--white);
    margin-bottom: 10px;
}

.exame-card p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
}

/* ==========================================================================
   UNIDADES SECTION
   ========================================================================== */
.unidades {
    padding: 100px 0;
    background: var(--gray-100);
}

.unidades-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 860px;
    margin: 0 auto;
}

.unidade-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.unidade-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.unidade-card.coming-soon {
    position: relative;
}

.unidade-card.coming-soon::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(91, 191, 197, 0.05), rgba(230, 57, 70, 0.05));
    z-index: 1;
    pointer-events: none;
}

.unidade-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.unidade-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.unidade-card:hover .unidade-image img {
    transform: scale(1.05);
}

.unidade-status {
    position: absolute;
    top: 15px;
    right: 15px;
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
}

.unidade-status.active {
    background: #25d366;
    color: var(--white);
}

.unidade-status.soon {
    background: var(--secondary-teal);
    color: var(--white);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.unidade-info {
    padding: 25px;
}

.unidade-info h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 15px;
    color: var(--primary-blue);
}

.unidade-info h3 i {
    color: var(--secondary-teal);
}

.unidade-info p {
    color: var(--gray-600);
    font-size: 0.95rem;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.unidade-info p i {
    color: var(--secondary-teal);
    width: 20px;
}

.unidade-social {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.unidade-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    border-radius: 50%;
    color: var(--primary-blue);
    transition: var(--transition);
}

.unidade-social a:hover {
    background: var(--secondary-teal);
    color: var(--white);
    transform: scale(1.1);
}

.unidade-badge {
    margin-top: 20px;
}

.unidade-badge span {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(135deg, var(--secondary-teal), var(--accent-red));
    color: var(--white);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* ==========================================================================
   CTA SECTION
   ========================================================================== */
.cta {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--secondary-teal), var(--accent-red));
    text-align: center;
}

.cta-content h2 {
    color: var(--white);
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.cta-content p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    margin-bottom: 30px;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.cta .btn {
    padding: 16px 40px;
    font-size: 1.1rem;
}

.cta .btn-whatsapp {
    background: #25d366;
}

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

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

/* ==========================================================================
   CONTATO SECTION
   ========================================================================== */
.contato {
    padding: 100px 0;
    background: var(--white);
}

.contato-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
}

.contato-form-wrapper {
    background: var(--white);
    padding: 40px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

.contato-form .form-group {
    margin-bottom: 20px;
}

.contato-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--gray-700);
}

.contato-form input,
.contato-form select,
.contato-form textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.contato-form input:focus,
.contato-form select:focus,
.contato-form textarea:focus {
    outline: none;
    border-color: var(--secondary-teal);
    box-shadow: 0 0 0 4px rgba(91, 191, 197, 0.1);
}

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

.contato-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.info-card {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: var(--gray-100);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.info-card:hover {
    background: var(--gray-200);
}

.info-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--secondary-teal), var(--accent-red));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.info-icon i {
    color: var(--white);
    font-size: 1.25rem;
}

.info-text h4 {
    margin-bottom: 4px;
    font-size: 1rem;
}

.info-text p {
    color: var(--gray-600);
    font-size: 0.95rem;
    line-height: 1.5;
}

.info-social {
    padding: 25px;
    background: var(--primary-blue);
    border-radius: var(--border-radius-lg);
    margin-top: auto;
}

.info-social h4 {
    color: var(--white);
    margin-bottom: 16px;
    font-size: 1rem;
}

.social-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px;
    border-radius: var(--border-radius);
    color: var(--white);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.social-btn.instagram {
    background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
}

.social-btn.facebook {
    background: #1877f2;
}

.social-btn:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
    background: var(--primary-blue-dark);
    padding: 80px 0 0;
    color: var(--white);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo img {
    height: 60px;
    margin-bottom: 20px;
    filter: brightness(0) invert(1);
}

.footer-col p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
}

.footer-social {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--white);
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--secondary-teal);
    transform: scale(1.1);
}

.footer-col h4 {
    color: var(--white);
    font-size: 1.1rem;
    margin-bottom: 24px;
    position: relative;
    padding-bottom: 12px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--secondary-teal);
    border-radius: 2px;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

.footer-col ul a:hover {
    color: var(--secondary-teal);
    padding-left: 5px;
}

.footer-col .contact-info li {
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255, 255, 255, 0.7);
}

.footer-col .contact-info i {
    color: var(--secondary-teal);
    width: 20px;
}

.footer-bottom {
    padding: 25px 0;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* ==========================================================================
   FLOAT BUTTONS
   ========================================================================== */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: #25d366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.75rem;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    z-index: 999;
    animation: bounce 2s infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(37, 211, 102, 0.5);
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 100px;
    width: 50px;
    height: 50px;
    background: var(--primary-blue);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 998;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--secondary-teal);
    transform: translateY(-3px);
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */
@media (max-width: 1200px) {
    .especialidades-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 992px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .sobre-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .sobre-image {
        order: 2;
    }

    .experience-badge {
        right: 0;
    }

    .especialidades-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .exames-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .unidades-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .top-bar-content {
        justify-content: center;
    }

    .top-contact {
        display: none;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        left: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--white);
        box-shadow: var(--shadow-xl);
        transition: var(--transition);
        z-index: 1001;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu ul {
        flex-direction: column;
        padding: 80px 30px 30px;
    }

    .nav-menu a {
        display: block;
        padding: 15px;
        border-bottom: 1px solid var(--gray-200);
    }

    .btn-agendar,
    .btn-portal-header {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-content p {
        font-size: 1.1rem;
    }

    .hero-buttons {
        grid-template-columns: 1fr;
        max-width: 100%;
    }

    .features-grid {
        grid-template-columns: 1fr;
        padding: 30px;
    }

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

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

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

    .social-buttons {
        grid-template-columns: 1fr;
    }

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

    .footer-col h4::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .footer-social {
        justify-content: center;
    }

    .whatsapp-float {
        bottom: 20px;
        right: 20px;
    }

    .back-to-top {
        right: 80px;
        bottom: 20px;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 15px;
    }

    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }

    .hero-content {
        padding: 40px 0;
    }

    .hero-features {
        margin-top: -40px;
    }

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

    .especialidade-card {
        padding: 25px;
    }

    .sobre,
    .especialidades,
    .exames,
    .unidades,
    .contato {
        padding: 60px 0;
    }

    .contato-form-wrapper {
        padding: 25px;
    }

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

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

/* Mobile Menu Overlay */
.nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}