/* ========================================
   Allergy & Asthma Center of Colorado
   Classic & Elegant — Terracotta + Sand
   ======================================== */

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

:root {
    --terracotta: #B8614A;
    --terracotta-dark: #9A4E3B;
    --terracotta-light: #D4896F;
    --sand: #F5EDE4;
    --sand-light: #FAF6F1;
    --sand-dark: #E8DDD2;
    --charcoal: #2C2420;
    --charcoal-light: #4A3F38;
    --warm-gray: #7A6E67;
    --warm-gray-light: #A89B94;
    --cream: #FDF9F5;
    --white: #FFFFFF;
    --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --font-sans: 'Lato', 'Segoe UI', Helvetica, Arial, sans-serif;
    --shadow-sm: 0 1px 3px rgba(44, 36, 32, 0.06), 0 1px 2px rgba(44, 36, 32, 0.04);
    --shadow-md: 0 4px 16px rgba(44, 36, 32, 0.08), 0 2px 4px rgba(44, 36, 32, 0.04);
    --shadow-lg: 0 12px 40px rgba(44, 36, 32, 0.10), 0 4px 12px rgba(44, 36, 32, 0.05);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

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

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

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

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
    font-family: var(--font-serif);
    font-weight: 500;
    line-height: 1.25;
    color: var(--charcoal);
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    text-transform: none;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: var(--terracotta-dark);
    border-color: var(--terracotta-dark);
    color: var(--white);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: transparent;
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.5);
}

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

.btn-full {
    width: 100%;
}

/* ---------- Section Shared ---------- */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 64px;
}

.section-eyebrow {
    font-family: var(--font-sans);
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--terracotta);
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 1.0625rem;
    color: var(--warm-gray);
    line-height: 1.7;
}

/* ---------- Header / Navigation ---------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(253, 249, 245, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--sand-dark);
    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: 76px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--charcoal);
}

.logo-icon {
    color: var(--terracotta);
    flex-shrink: 0;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-primary {
    font-family: var(--font-serif);
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--charcoal);
}

.logo-secondary {
    font-family: var(--font-sans);
    font-size: 0.6875rem;
    font-weight: 400;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--warm-gray);
}

.logo-light .logo-primary { color: var(--white); }
.logo-light .logo-secondary { color: rgba(255,255,255,0.7); }
.logo-light .logo-icon { color: var(--terracotta-light); }

.main-nav ul {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
}

.main-nav a {
    padding: 8px 16px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--charcoal-light);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    text-decoration: none;
}

.main-nav a:hover {
    color: var(--terracotta);
    background-color: rgba(184, 97, 74, 0.06);
}

.nav-cta {
    background-color: var(--terracotta) !important;
    color: var(--white) !important;
    border-radius: var(--radius-sm) !important;
    font-weight: 600 !important;
    margin-left: 8px;
}

.nav-cta:hover {
    background-color: var(--terracotta-dark) !important;
    color: var(--white) !important;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
}

.hamburger {
    display: block;
    width: 22px;
    height: 16px;
    position: relative;
}

.hamburger::before,
.hamburger::after,
.hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--charcoal);
    border-radius: 2px;
    position: absolute;
    transition: all var(--transition);
}

.hamburger::before { top: 0; }
.hamburger span { top: 7px; }
.hamburger::after { bottom: 0; }

.mobile-menu-btn[aria-expanded="true"] .hamburger::before {
    transform: rotate(45deg);
    top: 7px;
}

.mobile-menu-btn[aria-expanded="true"] .hamburger span {
    opacity: 0;
}

.mobile-menu-btn[aria-expanded="true"] .hamburger::after {
    transform: rotate(-45deg);
    bottom: 7px;
}

/* ---------- Hero ---------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--charcoal);
    overflow: hidden;
    padding-top: 76px;
}

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

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.45;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(44, 36, 32, 0.82) 0%,
        rgba(44, 36, 32, 0.65) 50%,
        rgba(154, 78, 59, 0.55) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 60px 24px;
    max-width: 820px;
}

.hero-eyebrow {
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--terracotta-light);
    margin-bottom: 20px;
}

.hero-headline {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 500;
    color: var(--white);
    line-height: 1.15;
    margin-bottom: 24px;
}

.hero-headline em {
    font-style: italic;
    color: var(--terracotta-light);
}

.hero-subheadline {
    font-size: clamp(1rem, 1.8vw, 1.1875rem);
    color: rgba(255, 255, 255, 0.82);
    line-height: 1.75;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.hero-trust {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.trust-item {
    font-size: 0.8125rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.72);
    letter-spacing: 0.04em;
}

.trust-dot {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.3);
}

/* ---------- Services ---------- */
.services {
    background-color: var(--sand-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.service-card {
    background-color: var(--white);
    border-radius: var(--radius-md);
    padding: 40px 32px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--sand-dark);
    transition: all var(--transition);
}

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

.service-icon {
    color: var(--terracotta);
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

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

/* ---------- About ---------- */
.about {
    background-color: var(--cream);
}

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

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

.about-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image img {
    width: 100%;
    height: 450px;
    object-fit: cover;
}

.about-accent {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 160px;
    height: 160px;
    background-color: var(--terracotta);
    border-radius: var(--radius-lg);
    z-index: -1;
    opacity: 0.15;
}

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

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

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

.about-content > p {
    font-size: 0.9375rem;
    color: var(--warm-gray);
    line-height: 1.8;
    margin-bottom: 36px;
}

.about-stats {
    display: flex;
    gap: 40px;
    margin-bottom: 36px;
    padding: 28px 0;
    border-top: 1px solid var(--sand-dark);
    border-bottom: 1px solid var(--sand-dark);
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-number {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--terracotta);
    line-height: 1;
}

.stat-label {
    font-size: 0.8125rem;
    color: var(--warm-gray);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    font-weight: 500;
}

/* ---------- Conditions ---------- */
.conditions {
    background-color: var(--sand-light);
}

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

.condition-item {
    background-color: var(--white);
    border-radius: var(--radius-md);
    padding: 32px 24px;
    border: 1px solid var(--sand-dark);
    transition: all var(--transition);
}

.condition-item:hover {
    border-color: var(--terracotta-light);
    box-shadow: var(--shadow-md);
}

.condition-tag {
    display: inline-block;
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--terracotta);
    background-color: rgba(184, 97, 74, 0.08);
    padding: 4px 10px;
    border-radius: 4px;
    margin-bottom: 14px;
}

.condition-item h4 {
    font-size: 1.125rem;
    margin-bottom: 8px;
}

.condition-item p {
    font-size: 0.875rem;
    color: var(--warm-gray);
    line-height: 1.65;
}

/* ---------- Patient Info ---------- */
.patient-info {
    background-color: var(--cream);
}

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

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

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

.patient-lead {
    font-size: 1.0625rem;
    color: var(--warm-gray);
    line-height: 1.75;
    margin-bottom: 36px;
}

.info-accordion {
    border-top: 1px solid var(--sand-dark);
}

.accordion-item {
    border-bottom: 1px solid var(--sand-dark);
}

.accordion-header {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-family: var(--font-serif);
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--charcoal);
    transition: color var(--transition);
}

.accordion-header:hover {
    color: var(--terracotta);
}

.accordion-header[aria-expanded="true"] {
    color: var(--terracotta);
}

.accordion-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--terracotta);
    transition: transform var(--transition);
}

.accordion-header[aria-expanded="true"] .accordion-icon {
    transform: rotate(45deg);
}

.accordion-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
}

.accordion-body.open {
    max-height: 200px;
    padding-bottom: 20px;
}

.accordion-body p {
    font-size: 0.9375rem;
    color: var(--warm-gray);
    line-height: 1.75;
}

.patient-info-visual {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.patient-info-visual img {
    width: 100%;
    height: 500px;
    object-fit: cover;
}

/* ---------- Quote Section ---------- */
.quote-section {
    background-color: var(--charcoal);
    padding: 80px 0;
    text-align: center;
}

.quote-section blockquote {
    position: relative;
    max-width: 720px;
    margin: 0 auto;
}

.quote-mark {
    font-family: var(--font-serif);
    font-size: 6rem;
    line-height: 1;
    color: var(--terracotta);
    position: absolute;
    top: -36px;
    left: -20px;
    opacity: 0.4;
}

.quote-section p {
    font-family: var(--font-serif);
    font-size: clamp(1.25rem, 2.5vw, 1.625rem);
    font-weight: 400;
    font-style: italic;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.65;
    margin-bottom: 28px;
    padding-left: 20px;
}

.quote-section footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.quote-author {
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 600;
    font-style: normal;
    color: var(--terracotta-light);
}

.quote-location {
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.5);
    letter-spacing: 0.06em;
}

/* ---------- Contact ---------- */
.contact {
    background-color: var(--sand-light);
}

.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-lead {
    font-size: 1.0625rem;
    color: var(--warm-gray);
    line-height: 1.75;
    margin-bottom: 36px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 32px;
}

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

.contact-detail-icon {
    color: var(--terracotta);
    flex-shrink: 0;
    margin-top: 2px;
}

.contact-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--warm-gray-light);
    margin-bottom: 4px;
}

.contact-detail a {
    font-size: 1.0625rem;
    font-weight: 500;
    color: var(--charcoal);
}

.contact-detail a:hover {
    color: var(--terracotta);
}

.contact-detail span {
    font-size: 1.0625rem;
    font-weight: 500;
    color: var(--charcoal);
}

.contact-map {
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

/* Contact Form */
.contact-form-wrap {
    background-color: var(--white);
    border-radius: var(--radius-lg);
    padding: 44px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--sand-dark);
}

.form-title {
    font-size: 1.375rem;
    margin-bottom: 28px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

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

.form-group label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--charcoal-light);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--sand-dark);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    color: var(--charcoal);
    background-color: var(--sand-light);
    transition: all var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--terracotta);
    background-color: var(--white);
    box-shadow: 0 0 0 3px rgba(184, 97, 74, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--warm-gray-light);
}

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

.form-privacy {
    font-size: 0.8125rem;
    color: var(--warm-gray-light);
    text-align: center;
    margin-top: 16px;
}

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

.form-success h4 {
    font-size: 1.5rem;
    margin: 16px 0 12px;
    color: var(--charcoal);
}

.form-success p {
    font-size: 0.9375rem;
    color: var(--warm-gray);
    line-height: 1.7;
}

/* ---------- Footer ---------- */
.site-footer {
    background-color: var(--charcoal);
    color: rgba(255, 255, 255, 0.7);
    padding: 72px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 56px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .logo-secondary {
    color: rgba(255, 255, 255, 0.5);
}

.footer-tagline {
    font-size: 0.875rem;
    line-height: 1.7;
    margin-top: 16px;
    color: rgba(255, 255, 255, 0.5);
    max-width: 280px;
}

.footer-links h4,
.footer-contact h4 {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 20px;
}

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

.footer-links a {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition);
}

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

.footer-contact p {
    font-size: 0.9375rem;
    line-height: 1.7;
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.7);
}

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

.footer-bottom {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 28px 0;
    text-align: center;
}

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

.footer-disclaimer {
    font-size: 0.75rem !important;
    color: rgba(255, 255, 255, 0.25) !important;
}

/* ---------- Scroll Reveal (progressive enhancement) ---------- */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .conditions-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }
    
    .main-nav {
        position: fixed;
        top: 76px;
        left: 0;
        right: 0;
        background-color: rgba(253, 249, 245, 0.98);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--sand-dark);
        padding: 16px 24px 24px;
        transform: translateY(-120%);
        opacity: 0;
        transition: all var(--transition);
        pointer-events: none;
    }
    
    .main-nav.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }
    
    .main-nav ul {
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
    }
    
    .main-nav a {
        padding: 12px 16px;
    }
    
    .nav-cta {
        margin-left: 0 !important;
        text-align: center;
        margin-top: 8px;
    }
    
    .hero-headline {
        font-size: clamp(1.75rem, 7vw, 2.5rem);
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
    }
    
    .about-grid,
    .patient-info-inner,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-image img {
        height: 320px;
    }
    
    .about-accent {
        display: none;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .conditions-grid {
        grid-template-columns: 1fr;
    }
    
    .patient-info-visual img {
        height: 300px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .contact-form-wrap {
        padding: 28px 24px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }
    
    .section {
        padding: 72px 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero-content {
        padding: 40px 16px;
    }
    
    .about-stats {
        flex-direction: column;
        gap: 20px;
    }
}