/* ========================================
   Central Cardiology Associates
   Classic & Elegant Medical Website
   ======================================== */

/* CSS Custom Properties */
:root {
    --teal-50: #f0fdfa;
    --teal-100: #ccfbf1;
    --teal-200: #99f6e4;
    --teal-300: #5eead4;
    --teal-400: #2dd4bf;
    --teal-500: #14b8a6;
    --teal-600: #0d9488;
    --teal-700: #0f766e;
    --teal-800: #115e59;
    --teal-900: #134e4a;
    --teal-950: #042f2e;

    --slate-50: #f8fafc;
    --slate-100: #f1f5f9;
    --slate-200: #e2e8f0;
    --slate-300: #cbd5e1;
    --slate-400: #94a3b8;
    --slate-500: #64748b;
    --slate-600: #475569;
    --slate-700: #334155;
    --slate-800: #1e293b;
    --slate-900: #0f172a;
    --slate-950: #020617;

    --serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

/* 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(--sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--slate-800);
    background-color: #ffffff;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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 {
    list-style: none;
}

/* Focus Styles */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--teal-500);
    outline-offset: 2px;
    border-radius: 2px;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--slate-200);
    transition: box-shadow 0.3s ease;
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--serif);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--teal-800);
    letter-spacing: -0.01em;
}

.nav-logo svg {
    color: var(--teal-600);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--slate-600);
    transition: color 0.2s ease;
    letter-spacing: 0.01em;
}

.nav-links a:hover {
    color: var(--teal-700);
}

.nav-cta {
    background: var(--teal-600);
    color: #ffffff !important;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-weight: 600 !important;
    transition: background 0.2s ease, transform 0.15s ease !important;
}

.nav-cta:hover {
    background: var(--teal-700);
    color: #ffffff !important;
    transform: translateY(-1px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    margin: -8px;
}

.nav-hamburger {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--slate-700);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle[aria-expanded="true"] .nav-hamburger:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-hamburger:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-hamburger:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    overflow: hidden;
    background: var(--slate-900);
}

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

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.35;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(4, 47, 46, 0.92) 0%, rgba(15, 122, 110, 0.85) 50%, rgba(15, 23, 42, 0.9) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 120px 24px 80px;
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 60px;
    align-items: center;
}

.hero-eyebrow {
    font-family: var(--sans);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--teal-300);
    margin-bottom: 20px;
}

.hero-headline {
    font-family: var(--serif);
    font-size: clamp(2.25rem, 4.5vw, 3.75rem);
    font-weight: 700;
    line-height: 1.15;
    color: #ffffff;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.hero-sub {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--slate-300);
    margin-bottom: 36px;
    max-width: 540px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    transition: all 0.25s ease;
    white-space: nowrap;
}

.btn-primary {
    background: var(--teal-600);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(13, 148, 136, 0.35);
}

.btn-primary:hover {
    background: var(--teal-700);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(13, 148, 136, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(4px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.18);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
}

/* Hero Stats */
.hero-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.stat-card {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    text-align: center;
    transition: transform 0.3s ease, background 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.12);
}

.stat-number {
    display: block;
    font-family: var(--serif);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--teal-300);
    line-height: 1;
    margin-bottom: 10px;
}

.stat-label {
    display: block;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--slate-300);
    line-height: 1.4;
    letter-spacing: 0.02em;
}

.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--slate-400);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    animation: float 2.5s ease-in-out infinite;
}

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

/* ========================================
   Section Styles
   ======================================== */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 64px;
}

.section-eyebrow {
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--teal-600);
    margin-bottom: 14px;
}

.section-title {
    font-family: var(--serif);
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--slate-900);
    margin-bottom: 18px;
    letter-spacing: -0.02em;
}

.section-desc {
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--slate-500);
}

/* ========================================
   Services Section
   ======================================== */
.services {
    padding: 100px 0;
    background: var(--slate-50);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    background: #ffffff;
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    border: 1px solid var(--slate-200);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--teal-200);
}

.service-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: var(--teal-50);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--teal-700);
    margin-bottom: 20px;
    transition: background 0.3s ease;
}

.service-card:hover .service-icon {
    background: var(--teal-100);
}

.service-card h3 {
    font-family: var(--serif);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--slate-900);
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.service-card p {
    font-size: 0.92rem;
    line-height: 1.65;
    color: var(--slate-500);
}

/* ========================================
   About Section
   ======================================== */
.about {
    padding: 100px 0;
    background: #ffffff;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.about-image {
    position: relative;
}

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

.about-image-accent {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 200px;
    height: 200px;
    background: var(--teal-100);
    border-radius: var(--radius-xl);
    z-index: -1;
}

.about-content .section-eyebrow {
    text-align: left;
}

.about-content .section-title {
    text-align: left;
    margin-bottom: 20px;
}

.about-content > p {
    font-size: 1rem;
    line-height: 1.75;
    color: var(--slate-600);
    margin-bottom: 16px;
}

.about-values {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 32px;
}

.value-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--slate-700);
}

.value-item svg {
    color: var(--teal-600);
    flex-shrink: 0;
}

/* ========================================
   Patient Care Section
   ======================================== */
.patients {
    padding: 100px 0;
    background: var(--slate-900);
}

.patients .section-eyebrow {
    color: var(--teal-400);
}

.patients .section-title {
    color: #ffffff;
}

.patients .section-desc {
    color: var(--slate-400);
}

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

.care-step {
    position: relative;
    padding: 36px 24px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    transition: background 0.3s ease, border-color 0.3s ease;
}

.care-step:hover {
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(13, 148, 136, 0.4);
}

.step-number {
    font-family: var(--serif);
    font-size: 3rem;
    font-weight: 700;
    color: var(--teal-700);
    line-height: 1;
    margin-bottom: 16px;
    opacity: 0.7;
}

.care-step h3 {
    font-family: var(--serif);
    font-size: 1.15rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 12px;
}

.care-step p {
    font-size: 0.9rem;
    line-height: 1.65;
    color: var(--slate-400);
}

/* ========================================
   Contact Section
   ======================================== */
.contact {
    padding: 100px 0 60px;
    background: var(--slate-50);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.contact-info .section-eyebrow {
    text-align: left;
}

.contact-info .section-title {
    text-align: left;
    margin-bottom: 16px;
}

.contact-desc {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--slate-500);
    margin-bottom: 36px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: var(--teal-50);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--teal-700);
    flex-shrink: 0;
}

.contact-item div {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.contact-label {
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--slate-400);
}

.contact-item span,
.contact-item a {
    font-size: 0.95rem;
    color: var(--slate-700);
    font-weight: 500;
}

.contact-item a:hover {
    color: var(--teal-700);
}

/* Contact Form */
.contact-form-wrapper {
    background: #ffffff;
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--slate-200);
}

.contact-form h3,
.form-success h3 {
    font-family: var(--serif);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--slate-900);
    margin-bottom: 24px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--slate-700);
    margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--slate-300);
    border-radius: var(--radius-sm);
    font-family: var(--sans);
    font-size: 0.92rem;
    color: var(--slate-800);
    background: var(--slate-50);
    transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--teal-500);
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-note {
    font-size: 0.8rem;
    color: var(--slate-400);
    margin-top: 14px;
    text-align: center;
}

.form-success {
    text-align: center;
    padding: 40px 20px;
}

.form-success svg {
    color: var(--teal-600);
    margin: 0 auto 20px;
}

.form-success h3 {
    margin-bottom: 12px;
}

.form-success p {
    font-size: 0.95rem;
    color: var(--slate-500);
    line-height: 1.6;
}

/* Map */
.map-container {
    margin-top: 60px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--slate-200);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--slate-900);
    color: var(--slate-400);
    padding: 64px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--serif);
    font-size: 1.1rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 16px;
}

.footer-brand .footer-logo svg {
    color: var(--teal-500);
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.65;
    color: var(--slate-400);
    max-width: 280px;
}

.footer-links h4 {
    font-family: var(--serif);
    font-size: 0.95rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 18px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    font-size: 0.88rem;
    color: var(--slate-400);
    transition: color 0.2s ease;
}

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

.footer-bottom {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 24px 0;
    font-size: 0.82rem;
    color: var(--slate-500);
}

.footer-bottom p {
    line-height: 1.5;
}

.footer-disclaimer {
    font-size: 0.78rem;
    color: var(--slate-600);
}

/* ========================================
   Scroll Animations
   ======================================== */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }

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

    .reveal-delay-1 { transition-delay: 0.1s; }
    .reveal-delay-2 { transition-delay: 0.2s; }
    .reveal-delay-3 { transition-delay: 0.3s; }
    .reveal-delay-4 { transition-delay: 0.4s; }
    .reveal-delay-5 { transition-delay: 0.5s; }
    .reveal-delay-6 { transition-delay: 0.6s; }
}

/* Default visible state for reduced motion */
@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
    }
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .hero-stats {
        max-width: 400px;
    }

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

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

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 24px;
        gap: 20px;
        border-bottom: 1px solid var(--slate-200);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s ease;
    }

    .nav-links.open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-content {
        padding: 100px 24px 80px;
    }

    .hero-stats {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    .stat-card {
        padding: 20px 16px;
    }

    .stat-number {
        font-size: 2rem;
    }

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

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

    .about-image img {
        height: 350px;
    }

    .about-image-accent {
        display: none;
    }

    .about-content .section-eyebrow,
    .about-content .section-title {
        text-align: center;
    }

    .about-content > p {
        text-align: center;
    }

    .about-values {
        grid-template-columns: 1fr;
    }

    .care-steps {
        grid-template-columns: 1fr;
    }

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

    .contact-form-wrapper {
        padding: 28px;
    }

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-bottom {
        text-align: center;
    }

    .footer-disclaimer {
        font-size: 0.72rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-headline {
        font-size: 1.9rem;
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .hero-stats {
        grid-template-columns: 1fr;
    }

    .section-header {
        margin-bottom: 48px;
    }

    .services,
    .about,
    .patients,
    .contact {
        padding: 72px 0;
    }
}