/* ========================================
   Harmony Chiropractic Office — Stylesheet
   Teal + Slate Grey | Confident Corporate
======================================== */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --color-teal-50: #f0fdfa;
    --color-teal-100: #ccfbf1;
    --color-teal-200: #99f6e4;
    --color-teal-500: #14b8a6;
    --color-teal-600: #0d9488;
    --color-teal-700: #0f766e;
    --color-teal-800: #115e59;
    --color-slate-50: #f8fafc;
    --color-slate-100: #f1f5f9;
    --color-slate-200: #e2e8f0;
    --color-slate-300: #cbd5e1;
    --color-slate-400: #94a3b8;
    --color-slate-500: #64748b;
    --color-slate-600: #475569;
    --color-slate-700: #334155;
    --color-slate-800: #1e293b;
    --color-slate-900: #0f172a;
    --color-white: #ffffff;
    --color-bg: var(--color-slate-900);
    --color-text: var(--color-slate-800);
    --color-text-light: var(--color-slate-500);
    --color-text-inverse: var(--color-slate-100);
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', system-ui, sans-serif;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
    --shadow-md: 0 4px 20px rgba(15, 23, 42, 0.10);
    --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.14);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background-color: var(--color-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: var(--color-teal-600);
    text-decoration: none;
    transition: color var(--transition);
}

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

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

/* Skip Link */
.skip-link {
    position: absolute;
    top: -100%;
    left: 16px;
    background: var(--color-teal-700);
    color: var(--color-white);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    z-index: 1000;
    font-size: 0.875rem;
    font-weight: 600;
}

.skip-link:focus {
    top: 16px;
    color: var(--color-white);
}

/* ========================================
   Header
======================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.97);
    border-bottom: 1px solid var(--color-slate-200);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: box-shadow var(--transition);
}

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

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-teal-700);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.125rem;
    text-decoration: none;
}

.logo:hover {
    color: var(--color-teal-800);
}

.logo-light {
    color: var(--color-white);
}

.logo-light:hover {
    color: var(--color-teal-200);
}

.logo-icon {
    flex-shrink: 0;
}

.primary-nav ul {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}

.primary-nav a:not(.btn) {
    color: var(--color-slate-600);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    transition: color var(--transition), background var(--transition);
}

.primary-nav a:not(.btn):hover {
    color: var(--color-teal-700);
    background: var(--color-teal-50);
}

/* Nav CTA Button */
.btn-nav {
    background: var(--color-teal-600);
    color: var(--color-white) !important;
    padding: 10px 20px !important;
    border-radius: var(--radius-sm);
    font-weight: 600 !important;
    font-size: 0.875rem;
    transition: background var(--transition), transform var(--transition) !important;
}

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

/* Mobile Nav Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 110;
}

.nav-toggle-line {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-slate-700);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}

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

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

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

/* ========================================
   Hero
======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 120px 24px 80px;
}

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

.hero-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-teal-800) 0%, var(--color-teal-700) 30%, var(--color-slate-800) 70%, var(--color-slate-900) 100%);
}

.hero-pattern {
    position: absolute;
    inset: 0;
    opacity: 0.06;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 820px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--color-teal-200);
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 8px 18px;
    border-radius: 50px;
    margin-bottom: 28px;
    backdrop-filter: blur(8px);
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(2.25rem, 5vw, 3.75rem);
    font-weight: 700;
    color: var(--color-white);
    line-height: 1.15;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.hero-sub {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-slate-300);
    line-height: 1.7;
    max-width: 600px;
    margin: 0 auto 40px;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 64px;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-white);
}

.stat-label {
    display: block;
    font-size: 0.8125rem;
    color: var(--color-slate-400);
    margin-top: 2px;
}

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

/* ========================================
   Buttons
======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 600;
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-teal-600);
    color: var(--color-white);
    border-color: var(--color-teal-600);
}

.btn-primary:hover {
    background: var(--color-teal-700);
    border-color: var(--color-teal-700);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(13, 148, 136, 0.3);
}

.btn-ghost {
    background: transparent;
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.35);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.6);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
}

/* ========================================
   Section Shared
======================================== */
.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-teal-600);
    margin-bottom: 12px;
}

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

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    font-weight: 700;
    color: var(--color-slate-900);
    line-height: 1.2;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

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

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
}

.service-card {
    background: var(--color-white);
    border: 1px solid var(--color-slate-200);
    border-radius: var(--radius-md);
    padding: 36px 28px;
    transition: all var(--transition);
}

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

.service-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-teal-50);
    border: 1px solid var(--color-teal-100);
    border-radius: var(--radius-md);
    color: var(--color-teal-700);
    margin-bottom: 20px;
    transition: all var(--transition);
}

.service-card:hover .service-icon {
    background: var(--color-teal-600);
    border-color: var(--color-teal-600);
    color: var(--color-white);
}

.service-card h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-slate-900);
    margin-bottom: 10px;
}

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

/* ========================================
   About
======================================== */
.about {
    padding: 100px 0;
    background: var(--color-white);
}

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

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

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

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

.about-content .section-title {
    margin-bottom: 24px;
}

.about-intro {
    font-size: 1.0625rem;
    color: var(--color-slate-600);
    line-height: 1.8;
    margin-bottom: 16px;
}

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

.value-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    font-size: 0.9375rem;
    color: var(--color-slate-700);
    line-height: 1.6;
}

.value-check {
    flex-shrink: 0;
    color: var(--color-teal-600);
    margin-top: 1px;
}

/* ========================================
   Approach
======================================== */
.approach {
    padding: 100px 0;
    background: var(--color-slate-900);
}

.approach .section-label {
    color: var(--color-teal-400);
}

.approach .section-title {
    color: var(--color-white);
}

.approach-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin-top: 56px;
}

.step {
    position: relative;
    padding: 32px 24px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    transition: all var(--transition);
}

.step:hover {
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(20, 184, 166, 0.3);
    transform: translateY(-4px);
}

.step-number {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-teal-600);
    opacity: 0.4;
    line-height: 1;
    margin-bottom: 16px;
}

.step h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 10px;
}

.step p {
    font-size: 0.9rem;
    color: var(--color-slate-400);
    line-height: 1.7;
}

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

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

.contact-intro {
    font-size: 1.0625rem;
    color: var(--color-slate-600);
    line-height: 1.8;
    margin-bottom: 40px;
}

.contact-details {
    display: grid;
    gap: 28px;
    margin-bottom: 32px;
}

.contact-item-label {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-slate-400);
    margin-bottom: 4px;
}

.contact-item dd {
    font-size: 1rem;
    color: var(--color-slate-700);
    line-height: 1.7;
}

.contact-item a {
    color: var(--color-teal-700);
    font-weight: 500;
}

.contact-item a:hover {
    color: var(--color-teal-600);
    text-decoration: underline;
}

.contact-map {
    overflow: hidden;
    border: 1px solid var(--color-slate-200);
    border-radius: var(--radius-md);
}

/* Form */
.contact-form-wrap {
    background: var(--color-white);
    border: 1px solid var(--color-slate-200);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
}

.form-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-slate-900);
    margin-bottom: 28px;
}

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

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-slate-700);
    margin-bottom: 6px;
    letter-spacing: 0.02em;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 14px;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    color: var(--color-slate-800);
    background: var(--color-slate-50);
    border: 1.5px solid var(--color-slate-200);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-teal-500);
    box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.15);
    background: var(--color-white);
}

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

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

.form-note {
    font-size: 0.8125rem;
    color: var(--color-slate-400);
    margin-top: 16px;
    text-align: center;
}

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

.form-success h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-slate-900);
    margin: 16px 0 8px;
}

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

/* ========================================
   Footer
======================================== */
.site-footer {
    background: var(--color-slate-900);
    color: var(--color-slate-400);
    padding: 64px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand p {
    margin-top: 16px;
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--color-slate-400);
    max-width: 300px;
}

.footer-links h4,
.footer-contact h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 16px;
}

.footer-links ul {
    list-style: none;
    display: grid;
    gap: 10px;
}

.footer-links a {
    color: var(--color-slate-400);
    font-size: 0.9rem;
    transition: color var(--transition);
}

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

.footer-contact p {
    font-size: 0.9rem;
    line-height: 1.8;
}

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

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 24px;
    text-align: center;
    font-size: 0.8125rem;
    color: var(--color-slate-500);
}

/* ========================================
   Scroll Reveal (progressive enhancement)
======================================== */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .reveal.revealed {
        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; }
}

/* ========================================
   Responsive
======================================== */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .about-grid {
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .primary-nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--color-white);
        border-bottom: 1px solid var(--color-slate-200);
        padding: 16px 24px;
        box-shadow: var(--shadow-lg);
        transform: translateY(-120%);
        opacity: 0;
        transition: transform var(--transition), opacity var(--transition);
        pointer-events: none;
    }

    .primary-nav.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .primary-nav ul {
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
    }

    .primary-nav a:not(.btn) {
        padding: 12px 14px;
    }

    .btn-nav {
        text-align: center;
        margin-top: 8px;
    }

    .hero {
        min-height: auto;
        padding: 140px 24px 80px;
    }

    .hero-stats {
        gap: 20px;
    }

    .stat-divider {
        display: none;
    }

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

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

    .about-image-wrap img {
        height: 400px;
    }

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

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

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

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

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

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

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

    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

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

    .service-card {
        padding: 28px 22px;
    }
}