/* ============================================
   Chc Optometry - Classic & Elegant Website
   Palette: Charcoal (#2D2D2D) + Coral (#E87461)
   Fonts: Playfair Display + Lato
============================================ */

/* CSS Custom Properties */
:root {
    --color-charcoal: #2D2D2D;
    --color-charcoal-light: #3D3D3D;
    --color-charcoal-dark: #1A1A1A;
    --color-coral: #E87461;
    --color-coral-light: #F4978A;
    --color-coral-dark: #C45A48;
    --color-cream: #FAF8F6;
    --color-cream-dark: #F0EDE8;
    --color-white: #FFFFFF;
    --color-text: #4A4A4A;
    --color-text-light: #7A7A7A;
    --color-border: #E5E0DB;
    
    --font-serif: 'Playfair Display', Georgia, serif;
    --font-sans: 'Lato', -apple-system, sans-serif;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    --border-radius: 4px;
    --transition: all 0.3s ease;
}

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

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

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background-color: var(--color-cream);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

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

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

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

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

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-serif);
    color: var(--color-charcoal);
    line-height: 1.2;
    font-weight: 400;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    text-decoration: none;
}

.btn-sm {
    padding: 0.625rem 1.25rem;
    font-size: 0.75rem;
}

.btn-full {
    width: 100%;
}

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

.btn-accent:hover {
    background-color: var(--color-coral-dark);
    border-color: var(--color-coral-dark);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(232, 116, 97, 0.3);
}

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

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

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

.btn-dark:hover {
    background-color: var(--color-charcoal-light);
    border-color: var(--color-charcoal-light);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(45, 45, 45, 0.3);
}

/* Section Tags */
.section-tag {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-coral);
    margin-bottom: var(--spacing-sm);
}

/* Section Titles */
.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-light);
    max-width: 600px;
}

/* ============================================
   Navigation
============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--color-charcoal);
    text-decoration: none;
    letter-spacing: 0.02em;
}

.logo:hover {
    color: var(--color-coral);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    list-style: none;
}

.nav-links a {
    color: var(--color-charcoal);
    font-size: 0.875rem;
    font-weight: 400;
    letter-spacing: 0.05em;
}

.nav-links a:hover {
    color: var(--color-coral);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-charcoal);
    transition: var(--transition);
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.98);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

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

.mobile-menu-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.mobile-link {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--color-charcoal);
    text-decoration: none;
}

.mobile-link:hover {
    color: var(--color-coral);
}

/* ============================================
   Hero Section
============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: url('https://images.pexels.com/photos/29110703/pexels-photo-29110703.jpeg?auto=compress&cs=tinysrgb&fit=crop&w=1920&h=1080');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(45, 45, 45, 0.75) 0%,
        rgba(45, 45, 45, 0.65) 50%,
        rgba(45, 45, 45, 0.80) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    padding-top: var(--spacing-xl);
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
}

.hero-title .text-accent {
    color: var(--color-coral);
    font-style: italic;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    text-align: center;
}

.hero-scroll-indicator span {
    display: block;
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: var(--spacing-xs);
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.6), transparent);
    margin: 0 auto;
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.5); }
    50% { opacity: 1; transform: scaleY(1); }
}

/* ============================================
   Services Section
============================================ */
.services {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-cream);
}

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

.section-header .section-subtitle {
    margin: 0 auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
}

.service-card {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
    border-color: var(--color-coral-light);
}

.service-icon {
    width: 56px;
    height: 56px;
    margin-bottom: var(--spacing-sm);
    color: var(--color-coral);
}

.service-icon svg {
    width: 100%;
    height: 100%;
}

.service-card h3 {
    font-size: 1.35rem;
    margin-bottom: var(--spacing-xs);
}

.service-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ============================================
   About Section
============================================ */
.about {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-white);
}

.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.about-image-wrapper {
    position: relative;
}

.about-image-wrapper img {
    width: 100%;
    height: 700px;
    object-fit: cover;
    border-radius: var(--border-radius);
}

.about-accent-box {
    position: absolute;
    bottom: -30px;
    right: -30px;
    background-color: var(--color-coral);
    color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    text-align: center;
    min-width: 140px;
}

.accent-box-label {
    display: block;
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    opacity: 0.85;
    margin-bottom: 0.25rem;
}

.accent-box-value {
    display: block;
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-style: italic;
}

.about-content {
    padding: var(--spacing-md);
}

.about-text {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
    list-style: none;
}

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

.about-feature svg {
    width: 18px;
    height: 18px;
    color: var(--color-coral);
    flex-shrink: 0;
}

/* ============================================
   Contact Section
============================================ */
.contact {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-charcoal);
}

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

.contact .section-tag {
    color: var(--color-coral-light);
}

.contact .section-title {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.contact-subtitle {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-lg);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-item {
    display: flex;
    gap: var(--spacing-sm);
}

.contact-icon {
    width: 48px;
    height: 48px;
    background-color: rgba(232, 116, 97, 0.15);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-coral);
}

.contact-item h4 {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-coral-light);
    margin-bottom: 0.25rem;
}

.contact-item p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.95rem;
    line-height: 1.6;
}

.contact-item a {
    color: rgba(255, 255, 255, 0.85);
}

.contact-item a:hover {
    color: var(--color-coral);
}

/* Contact Form */
.contact-form-wrapper {
    background-color: var(--color-charcoal-light);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
}

.contact-form h3 {
    color: var(--color-white);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

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

.form-group label {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    background-color: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--border-radius);
    color: var(--color-white);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.35);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-coral);
    background-color: rgba(255, 255, 255, 0.12);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-success {
    display: none;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    background-color: rgba(76, 175, 80, 0.15);
    border: 1px solid rgba(76, 175, 80, 0.3);
    border-radius: var(--border-radius);
    color: #81C784;
    font-size: 0.9rem;
    margin-top: var(--spacing-sm);
}

.form-success svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* ============================================
   Map Section
============================================ */
.map-section {
    border-top: 1px solid var(--color-border);
}

.map-container iframe {
    filter: grayscale(40%);
}

/* ============================================
   Footer
============================================ */
.footer {
    background-color: var(--color-charcoal-dark);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

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

.footer-logo {
    color: var(--color-white);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

.footer-links h4,
.footer-contact h4 {
    font-family: var(--font-sans);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-coral-light);
    margin-bottom: var(--spacing-sm);
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

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

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

.footer-contact p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    line-height: 1.8;
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.6);
}

.footer-contact a:hover {
    color: var(--color-coral);
}

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

.footer-bottom p {
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.8rem;
}

/* ============================================
   Responsive Styles
============================================ */
@media (max-width: 968px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .about-container {
        grid-template-columns: 1fr;
    }
    
    .about-image-wrapper img {
        height: 500px;
    }
    
    .about-accent-box {
        right: 20px;
        bottom: -20px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 640px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }
    
    .hero-title {
        font-size: clamp(2rem, 8vw, 3rem);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .about-accent-box {
        position: relative;
        bottom: auto;
        right: auto;
        margin-top: var(--spacing-sm);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .contact-form-wrapper {
        padding: var(--spacing-md);
    }
}