/* =========================================
   CSS Variables & Tokens (Premium Medical)
   ========================================= */
:root {
    --primary: #2C5EB7; /* Therapeia Blue */
    --primary-light: #5b87e5; /* Lighter Blue */
    --primary-op: rgba(44, 94, 183, 0.1);
    --secondary: #2d4268; /* Dark Blue */
    --dark: #0F172A; /* Slate 900 */
    --dark-muted: #334155; /* Slate 700 */
    --light: #F8FAFC; /* Slate 50 */
    --white: #FFFFFF;
    --whatsapp: #25D366;
    
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 25px -3px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 20px 40px -5px rgba(0, 0, 0, 0.1);
    
    --font-main: 'Montserrat', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    color: var(--dark-muted);
    background-color: var(--light);
    line-height: 1.6;
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* =========================================
   Typography & Utilities
   ========================================= */
.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-title p {
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
    color: var(--dark-muted);
}

.mt-4 { margin-top: 2rem; }
.center-text { text-align: center; }

/* =========================================
   Buttons
   ========================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.btn-block {
    width: 100%;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--white);
    box-shadow: 0 4px 14px 0 rgba(15, 118, 110, 0.39);
}

.btn-primary:hover {
    background-color: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(20, 184, 166, 0.4);
}

.btn-secondary {
    background-color: var(--white);
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background-color: var(--light);
}

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

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

/* =========================================
   Navigation
   ========================================= */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    padding: 1rem 0;
    transition: all 0.3s ease;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-text { color: var(--primary); }
.logo-sub { color: var(--secondary); }

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a:not(.btn) {
    font-weight: 500;
    color: var(--dark-muted);
}

.nav-links a:not(.btn):hover {
    color: var(--primary);
}

/* =========================================
   Hero Section
   ========================================= */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px; /* navbar offset */
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-slide {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    animation: fadeSlide 15s infinite ease-in-out;
}

.hero-slide:nth-child(1) { animation-delay: 0s; }
.hero-slide:nth-child(2) { animation-delay: 5s; }
.hero-slide:nth-child(3) { animation-delay: 10s; }

@keyframes fadeSlide {
    0% { opacity: 0; transform: scale(1.05); }
    10% { opacity: 1; transform: scale(1); }
    33% { opacity: 1; transform: scale(1); }
    43% { opacity: 0; transform: scale(1.05); }
    100% { opacity: 0; }
}

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.85) 50%, rgba(255,255,255,0.4) 100%);
}

.hero-content {
    max-width: 600px;
    z-index: 1;
}

.badge {
    display: inline-block;
    background: var(--primary-op);
    color: var(--primary);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.hero h1 strong {
    color: var(--primary);
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }

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

/* =========================================
   Services Section
   ========================================= */
.services {
    padding: 6rem 0;
    background: var(--white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--light);
    border: 1px solid rgba(0,0,0,0.03);
    padding: 2.5rem 2rem;
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-md);
    background: var(--white);
    border-color: var(--primary-op);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    background: var(--primary-op);
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* =========================================
   Social Hub Section
   ========================================= */
.social-hub {
    padding: 6rem 0;
    background: var(--light);
}

.social-widget-container {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.widget-placeholder {
    text-align: center;
    padding: 3rem;
    border: 2px dashed #CBD5E1;
    border-radius: var(--radius-md);
    color: #64748B;
}

.widget-placeholder p:first-child {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--dark);
}

/* =========================================
   Contact Section
   ========================================= */
.contact-section {
    padding: 6rem 0;
    background: var(--white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-info p {
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

.contact-details {
    list-style: none;
    margin-bottom: 2rem;
}

.contact-details li {
    font-size: 1.125rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    font-weight: 500;
}

.contact-form-container {
    background: var(--light);
    padding: 3rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1px solid #E2E8F0;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

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

/* =========================================
   Footer
   ========================================= */
footer {
    background: var(--dark);
    color: #94A3B8;
    padding: 3rem 0;
}

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

.footer-links a {
    margin-left: 1.5rem;
}

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

/* =========================================
   Floating WhatsApp
   ========================================= */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: var(--whatsapp);
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: var(--shadow-lg);
    z-index: 100;
    transition: transform 0.3s;
}

.whatsapp-float:hover {
    transform: scale(1.1);
}

/* =========================================
   Responsive Design
   ========================================= */
@media (max-width: 992px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }
    .hero h1 {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none; /* In a real app, add a hamburger menu */
    }
    .hero h1 {
        font-size: 2.5rem;
    }
    .hero-buttons {
        flex-direction: column;
    }
    .overlay {
        background: linear-gradient(180deg, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.9) 100%);
    }
}