/* ============================================
   Washington Summit — Medical & Health Website
   Charcoal + Coral Palette
   ============================================ */

/* CSS Custom Properties */
:root {
    --charcoal-900: #1a1d23;
    --charcoal-800: #2d3139;
    --charcoal-700: #374151;
    --charcoal-600: #4b5563;
    --charcoal-500: #6b7280;
    --charcoal-400: #9ca3af;
    --charcoal-100: #f3f4f6;
    --charcoal-50: #f9fafb;
    
    --coral-600: #e8553a;
    --coral-500: #FF6B4A;
    --coral-400: #ff856a;
    --coral-300: #ffa792;
    --coral-100: #ffe4df;
    
    --white: #ffffff;
    --black: #0a0a0a;
    
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;
    
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;
    --space-4xl: 8rem;
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.1), 0 2px 4px rgba(0,0,0,0.06);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.12), 0 4px 12px rgba(0,0,0,0.08);
    --shadow-xl: 0 24px 60px rgba(0,0,0,0.15);
    
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--charcoal-700);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--space-xl);
    }
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4 {
    font-family: var(--font-display);
    color: var(--charcoal-900);
    line-height: 1.2;
    font-weight: 700;
}

h1 { font-size: clamp(2.25rem, 5vw, 4rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.75rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p {
    color: var(--charcoal-600);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 500;
    letter-spacing: 0.01em;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--coral-500);
    color: var(--white);
    box-shadow: 0 4px 14px rgba(255, 107, 74, 0.35);
}

.btn-primary:hover {
    background: var(--coral-600);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 74, 0.45);
}

.btn-outline-light {
    background: transparent;
    color: var(--white);
    border: 1.5px solid rgba(255, 255, 255, 0.5);
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--white);
    transform: translateY(-2px);
}

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

.btn-full {
    width: 100%;
}

.btn svg {
    flex-shrink: 0;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) 0;
    transition: all var(--transition);
}

.navbar.scrolled {
    background: rgba(26, 29, 35, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: var(--space-sm) 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-mark {
    width: 42px;
    height: 42px;
    background: var(--coral-500);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--white);
    letter-spacing: 0.05em;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--white);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-links a:not(.btn) {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9375rem;
    font-weight: 400;
    transition: color var(--transition);
    position: relative;
}

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

.nav-links a:not(.btn)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--coral-500);
    transition: width var(--transition);
}

.nav-links a:not(.btn):hover::after {
    width: 100%;
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: background var(--transition);
}

.mobile-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
}

.hamburger {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--white);
    position: relative;
    transition: all var(--transition);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 22px;
    height: 2px;
    background: var(--white);
    transition: all var(--transition);
}

.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }

.mobile-toggle.active .hamburger {
    background: transparent;
}

.mobile-toggle.active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.mobile-toggle.active .hamburger::after {
    top: 0;
    transform: rotate(-45deg);
}

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

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(26, 29, 35, 0.92) 0%,
        rgba(45, 49, 57, 0.85) 50%,
        rgba(26, 29, 35, 0.78) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    padding-top: var(--space-4xl);
    padding-bottom: var(--space-3xl);
    max-width: 780px;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(255, 107, 74, 0.15);
    border: 1px solid rgba(255, 107, 74, 0.3);
    border-radius: 50px;
    color: var(--coral-300);
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: var(--space-lg);
}

.hero-headline {
    color: var(--white);
    margin-bottom: var(--space-md);
    max-width: 680px;
}

.hero-headline span {
    color: var(--coral-400);
}

.hero-sub {
    color: rgba(255, 255, 255, 0.75);
    font-size: clamp(1rem, 1.5vw, 1.1875rem);
    line-height: 1.8;
    margin-bottom: var(--space-xl);
    max-width: 600px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-3xl);
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding-top: var(--space-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.stat-number {
    font-family: var(--font-display);
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--white);
}

.stat-label {
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.5);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.15);
}

.hero-scroll {
    position: absolute;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    animation: float 2s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(6px); }
}

/* ============================================
   Section Shared
   ============================================ */
.section-tag {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--coral-500);
    margin-bottom: var(--space-sm);
}

.section-title {
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: 1.0625rem;
    color: var(--charcoal-500);
    max-width: 560px;
    line-height: 1.7;
}

/* ============================================
   Services Section
   ============================================ */
.services {
    padding: var(--space-4xl) 0;
    background: var(--charcoal-50);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

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

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-lg);
}

.service-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    border: 1px solid transparent;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(255, 107, 74, 0.15);
}

.service-icon {
    width: 56px;
    height: 56px;
    background: var(--coral-100);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--coral-500);
    margin-bottom: var(--space-md);
    transition: all var(--transition);
}

.service-card:hover .service-icon {
    background: var(--coral-500);
    color: var(--white);
}

.service-card h3 {
    font-family: var(--font-body);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.625rem;
    color: var(--charcoal-800);
}

.service-card p {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--charcoal-500);
}

/* ============================================
   About Section
   ============================================ */
.about {
    padding: var(--space-4xl) 0;
    background: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.about-image {
    position: relative;
}

.about-img-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.about-img-wrapper img {
    width: 100%;
    height: 500px;
    object-fit: cover;
}

.about-accent {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 120px;
    height: 120px;
    background: var(--coral-500);
    border-radius: var(--radius-lg);
    z-index: -1;
    opacity: 0.3;
}

.about-content {
    max-width: 540px;
}

.about-text {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--charcoal-600);
    margin-bottom: var(--space-lg);
}

.about-values {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
    margin-top: var(--space-xl);
}

.value-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--charcoal-700);
}

.value-item svg {
    color: var(--coral-500);
    flex-shrink: 0;
}

/* ============================================
   Approach Section
   ============================================ */
.approach {
    padding: var(--space-4xl) 0;
    background: var(--charcoal-900);
    color: var(--white);
}

.approach-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.approach-content .section-tag {
    color: var(--coral-400);
}

.approach-content .section-title {
    color: var(--white);
    margin-bottom: var(--space-lg);
}

.approach-text {
    color: rgba(255, 255, 255, 0.65);
    font-size: 1.0625rem;
    line-height: 1.8;
    margin-bottom: var(--space-xl);
}

.approach-steps {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.approach-step {
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
}

.step-number {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--coral-500);
    line-height: 1;
    flex-shrink: 0;
    width: 48px;
}

.approach-step h4 {
    font-family: var(--font-body);
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 0.375rem;
}

.approach-step p {
    color: rgba(255, 255, 255, 0.55);
    font-size: 0.9375rem;
    line-height: 1.7;
}

.approach-img {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.approach-img img {
    width: 100%;
    height: 560px;
    object-fit: cover;
}

/* ============================================
   Contact Section
   ============================================ */
.contact {
    padding: var(--space-4xl) 0;
    background: var(--charcoal-50);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
}

.contact-text {
    font-size: 1.0625rem;
    color: var(--charcoal-500);
    line-height: 1.8;
    margin-bottom: var(--space-xl);
}

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

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: var(--white);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--coral-500);
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

.contact-item span:first-child {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--charcoal-400);
    margin-bottom: 0.25rem;
}

.contact-item span:last-child,
.contact-item a {
    font-size: 1rem;
    font-weight: 500;
    color: var(--charcoal-800);
}

.contact-item a:hover {
    color: var(--coral-500);
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
}

.contact-form h3 {
    font-family: var(--font-body);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.375rem;
}

.form-note {
    font-size: 0.875rem;
    color: var(--charcoal-400);
    margin-bottom: var(--space-lg);
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--charcoal-700);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1.5px solid var(--charcoal-100);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    color: var(--charcoal-800);
    background: var(--charcoal-50);
    transition: all var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--coral-500);
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(255, 107, 74, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--charcoal-400);
}

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

.form-success {
    display: none;
    text-align: center;
    padding: var(--space-xl);
}

.form-success svg {
    color: var(--coral-500);
    margin-bottom: var(--space-sm);
}

.form-success h4 {
    font-family: var(--font-body);
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.form-success p {
    color: var(--charcoal-500);
    font-size: 0.9375rem;
}

/* ============================================
   Location Banner
   ============================================ */
.location-banner {
    background: var(--charcoal-800);
    padding: var(--space-xl) 0;
}

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

.location-text h3 {
    font-size: 1.375rem;
    color: var(--white);
    margin-bottom: 0.375rem;
}

.location-text p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9375rem;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--charcoal-900);
    padding: var(--space-3xl) 0 var(--space-lg);
    color: rgba(255, 255, 255, 0.6);
}

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

.footer-brand .logo {
    margin-bottom: var(--space-sm);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9375rem;
    line-height: 1.7;
    max-width: 280px;
}

.footer-links h4,
.footer-contact h4 {
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--white);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: var(--space-md);
}

.footer-links a {
    display: block;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9375rem;
    padding: 0.375rem 0;
    transition: color var(--transition);
}

.footer-links a:hover {
    color: var(--coral-400);
}

.footer-contact p {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 0.5rem;
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.5);
    transition: color var(--transition);
}

.footer-contact a:hover {
    color: var(--coral-400);
}

.footer-bottom {
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: center;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.35);
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.35);
    transition: color var(--transition);
}

.footer-bottom a:hover {
    color: var(--coral-400);
}

/* ============================================
   Mobile Responsive
   ============================================ */
@media (max-width: 900px) {
    .about-grid,
    .approach-grid {
        grid-template-columns: 1fr;
    }
    
    .about-img-wrapper img,
    .approach-img img {
        height: 360px;
    }
    
    .about-accent {
        display: none;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: var(--charcoal-900);
        flex-direction: column;
        align-items: flex-start;
        padding: 6rem var(--space-xl) var(--space-xl);
        gap: var(--space-md);
        transition: right var(--transition);
        box-shadow: -10px 0 40px rgba(0, 0, 0, 0.3);
    }
    
    .nav-links.open {
        right: 0;
    }
    
    .nav-links a:not(.btn) {
        font-size: 1.125rem;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .hero-content {
        padding-top: var(--space-3xl);
    }
    
    .hero-stats {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }
    
    .stat-divider {
        display: none;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .about-values {
        grid-template-columns: 1fr;
    }
    
    .location-content {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
    }
    
    .hero-actions .btn {
        width: 100%;
    }
    
    .contact-form-wrapper {
        padding: var(--space-md);
    }
}

/* ============================================
   Animations
   ============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }