/* ====================================
   Lumina Medical - Design System
   "Calming Nature" - Organic & Soft
   ==================================== */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Playfair+Display:wght@400;500;600&display=swap');

/* ---------- CSS Custom Properties ---------- */
:root {
    /* Colors - Calming Nature Palette */
    --sage-soft: #E0E8E3;
    --sand-beige: #F5F2EB;
    --forest-dark: #2C3E36;
    --forest-medium: #4A6258;
    --forest-light: #6B8B7A;
    --white: #FFFFFF;
    --white-translucent: rgba(255, 255, 255, 0.65);
    --shadow-soft: rgba(44, 62, 54, 0.08);
    --shadow-medium: rgba(44, 62, 54, 0.12);
    
    /* Typography */
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;
    --space-section: clamp(80px, 12vh, 140px);
    
    /* Soft UI */
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 30px;
    --radius-xl: 40px;
    
    /* Transitions */
    --transition-smooth: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.7;
    color: var(--forest-dark);
    background-color: var(--sand-beige);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 500;
    line-height: 1.2;
    color: var(--forest-dark);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: -0.01em;
}

h3 {
    font-size: clamp(1.25rem, 2vw, 1.5rem);
    font-weight: 500;
}

p {
    font-size: clamp(1rem, 1.1vw, 1.125rem);
    color: var(--forest-medium);
}

.accent-text {
    color: var(--forest-light);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-weight: 500;
}

/* ---------- Layout Utilities ---------- */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.section {
    padding: var(--space-section) 0;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 1rem 2rem;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-smooth);
}

.btn-primary {
    background-color: var(--forest-dark);
    color: var(--white);
    box-shadow: 0 8px 24px var(--shadow-medium);
}

.btn-primary:hover {
    background-color: var(--forest-medium);
    transform: translateY(-3px);
    box-shadow: 0 12px 32px var(--shadow-medium);
}

.btn-secondary {
    background-color: var(--white);
    color: var(--forest-dark);
    border: 2px solid var(--sage-soft);
}

.btn-secondary:hover {
    background-color: var(--sage-soft);
    border-color: var(--forest-light);
}

/* ---------- Header / Navigation ---------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) 0;
    background: rgba(245, 242, 235, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: all var(--transition-smooth);
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--forest-dark);
}

.logo span {
    font-weight: 400;
    color: var(--forest-light);
}

/* ---------- Hero Section ---------- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    background: linear-gradient(135deg, var(--sand-beige) 0%, var(--sage-soft) 100%);
    position: relative;
    overflow: hidden;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
}

.hero-text {
    max-width: 540px;
}

.hero-tagline {
    margin-bottom: var(--space-md);
}

.hero h1 {
    margin-bottom: var(--space-md);
}

.hero-description {
    margin-bottom: var(--space-lg);
    font-size: 1.125rem;
}

.hero-image-wrapper {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 32px 64px var(--shadow-medium);
}

.hero-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    aspect-ratio: 4/5;
    transition: transform 8s ease;
}

.hero-image-wrapper:hover img {
    transform: scale(1.05);
}

/* Decorative elements */
.hero::before {
    content: '';
    position: absolute;
    top: 20%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--sage-soft) 0%, transparent 70%);
    opacity: 0.6;
    pointer-events: none;
}

/* ---------- Services Section ---------- */
.services {
    background-color: var(--sand-beige);
    position: relative;
}

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

.services-header h2 {
    margin-bottom: var(--space-sm);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

/* Frosted Glass Card */
.service-card {
    background: var(--white-translucent);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
    transition: all var(--transition-smooth);
    box-shadow: 0 8px 32px var(--shadow-soft);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px var(--shadow-medium);
    background: rgba(255, 255, 255, 0.8);
}

.service-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon svg {
    width: 100%;
    height: 100%;
    stroke: var(--forest-dark);
    stroke-width: 1.5;
    fill: none;
}

.service-card h3 {
    margin-bottom: var(--space-sm);
}

.service-card p {
    font-size: 0.95rem;
}

/* ---------- AI Companion Section ---------- */
.ai-companion {
    background: linear-gradient(180deg, var(--sage-soft) 0%, var(--sand-beige) 100%);
    overflow: hidden;
}

.ai-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
}

.ai-text {
    max-width: 500px;
}

.ai-text h2 {
    margin-bottom: var(--space-md);
}

.ai-text p {
    margin-bottom: var(--space-lg);
}

.ai-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

.ai-feature {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.95rem;
    color: var(--forest-medium);
}

.ai-feature .check-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    stroke: var(--forest-light);
    stroke-width: 2;
}

.phone-mockup-container {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    max-width: 320px;
    border-radius: var(--radius-xl);
    box-shadow: 0 40px 80px var(--shadow-medium);
    transition: transform var(--transition-smooth);
}

.phone-mockup:hover {
    transform: translateY(-12px) rotate(2deg);
}

/* ---------- Footer ---------- */
.footer {
    background-color: var(--forest-dark);
    color: var(--sage-soft);
    padding: var(--space-xl) 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--white);
}

.footer-links {
    display: flex;
    gap: var(--space-lg);
}

.footer-links a {
    font-size: 0.875rem;
    color: var(--sage-soft);
    opacity: 0.8;
    transition: opacity var(--transition-smooth);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--white);
}

.footer-credit {
    width: 100%;
    text-align: center;
    margin-top: var(--space-lg);
    padding-top: var(--space-md);
    border-top: 1px solid rgba(224, 232, 227, 0.15);
    font-size: 0.8rem;
    opacity: 0.6;
}

.footer-credit a {
    color: var(--white);
    opacity: 0.8;
}

.footer-credit a:hover {
    opacity: 1;
}

/* ---------- Scroll Animations ---------- */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
    .hero-content,
    .ai-content {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
        text-align: center;
    }
    
    .hero-text,
    .ai-text {
        max-width: 100%;
        margin: 0 auto;
    }
    
    .hero-image-wrapper {
        max-width: 500px;
        margin: 0 auto;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .ai-features {
        align-items: center;
    }
}

@media (max-width: 768px) {
    :root {
        --space-section: clamp(60px, 10vh, 100px);
    }
    
    .container {
        padding: 0 var(--space-md);
    }
    
    .btn {
        padding: 0.875rem 1.75rem;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
}