/* ============================================
   Active Air Heating & Cooling — Stylesheet
   Colors: Forest Green (#1a5632) + Off-White (#f8f6f1)
   Fonts: Playfair Display + Inter
============================================ */

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

:root {
    --green-dark: #1a5632;
    --green-mid: #236b43;
    --green-light: #2d8a56;
    --green-pale: #e8f5ec;
    --off-white: #f8f6f1;
    --off-white-dark: #ede9e0;
    --text-dark: #1a1a1a;
    --text-mid: #3d3d3d;
    --text-light: #6b6b6b;
    --white: #ffffff;
    --border: #e0dbd2;
    --shadow-sm: 0 2px 8px rgba(26, 86, 50, 0.08);
    --shadow-md: 0 4px 20px rgba(26, 86, 50, 0.12);
    --shadow-lg: 0 8px 40px rgba(26, 86, 50, 0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-dark);
    background-color: var(--off-white);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

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

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
    font-family: 'Playfair Display', Georgia, serif;
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-dark);
}

/* ---------- Navigation ---------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(248, 246, 241, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
    border-bottom-color: var(--border);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--green-dark);
}

.nav-logo:hover {
    color: var(--green-mid);
}

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

.nav-links a {
    font-size: 0.938rem;
    font-weight: 500;
    color: var(--text-mid);
    position: relative;
}

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

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

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

.btn-nav {
    background: var(--green-dark);
    color: var(--white) !important;
    padding: 10px 22px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.938rem;
    transition: background var(--transition), transform var(--transition);
}

.btn-nav:hover {
    background: var(--green-mid);
    transform: translateY(-1px);
}

.btn-nav::after {
    display: none !important;
}

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

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-dark);
    transition: var(--transition);
    transform-origin: center;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--off-white);
    z-index: 999;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.mobile-menu.open {
    display: flex;
}

.mobile-menu-close {
    position: absolute;
    top: 24px;
    right: 24px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-dark);
    padding: 8px;
}

.mobile-nav-link {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-dark);
    padding: 12px 24px;
    transition: color var(--transition);
}

.mobile-nav-link:hover {
    color: var(--green-dark);
}

.mobile-cta {
    margin-top: 16px;
    background: var(--green-dark);
    color: var(--white) !important;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    font-weight: 600;
}

/* ---------- Hero ---------- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 100px 0 0;
    background: var(--off-white);
    position: relative;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--green-pale);
    color: var(--green-dark);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.hero-title {
    font-size: clamp(2.25rem, 4vw, 3.5rem);
    color: var(--text-dark);
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.hero-title span {
    color: var(--green-dark);
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-mid);
    line-height: 1.7;
    margin-bottom: 32px;
    max-width: 520px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.hero-trust {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-mid);
}

.hero-image {
    position: relative;
}

.hero-image img {
    width: 100%;
    height: 560px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.hero-image-accent {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 200px;
    height: 200px;
    background: var(--green-dark);
    border-radius: var(--radius-lg);
    z-index: -1;
    opacity: 0.1;
}

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    line-height: 0;
}

.hero-wave svg {
    width: 100%;
    height: 80px;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all var(--transition);
}

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

.btn-primary:hover {
    background: var(--green-mid);
    border-color: var(--green-mid);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: transparent;
    color: var(--green-dark);
    border-color: var(--green-dark);
}

.btn-secondary:hover {
    background: var(--green-pale);
    transform: translateY(-2px);
}

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

.btn-outline-light:hover {
    background: var(--white);
    color: var(--green-dark);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.063rem;
}

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

/* ---------- Section Headers ---------- */
.section-label {
    display: inline-block;
    font-size: 0.813rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--green-dark);
    margin-bottom: 12px;
}

.section-label.light {
    color: var(--green-pale);
}

.section-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

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

.section-description {
    font-size: 1.063rem;
    color: var(--text-light);
    max-width: 600px;
    line-height: 1.7;
}

.section-description.light {
    color: rgba(255, 255, 255, 0.75);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

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

/* ---------- Services ---------- */
.services {
    padding: 100px 0;
    background: var(--off-white);
}

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

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

.service-card:hover {
    border-color: var(--green-dark);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.service-icon {
    width: 56px;
    height: 56px;
    background: var(--green-pale);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
}

.service-card p {
    font-size: 0.938rem;
    color: var(--text-light);
    line-height: 1.65;
    margin-bottom: 20px;
}

.service-link {
    font-size: 0.938rem;
    font-weight: 600;
    color: var(--green-dark);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap var(--transition);
}

.service-link:hover {
    gap: 8px;
}

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

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

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

.about-image-wrap img {
    width: 100%;
    height: 480px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.about-stat {
    position: absolute;
    bottom: -24px;
    left: 40px;
    background: var(--green-dark);
    color: var(--white);
    padding: 20px 28px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.about-stat-number {
    display: block;
    font-family: 'Playfair Display', serif;
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 4px;
}

.about-stat-label {
    font-size: 0.813rem;
    opacity: 0.85;
}

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

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

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px 24px;
    margin: 28px 0 32px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.938rem;
    font-weight: 500;
    color: var(--text-mid);
}

.about-feature svg {
    flex-shrink: 0;
}

/* ---------- Why Us ---------- */
.why-us {
    padding: 100px 0;
    background: var(--green-dark);
}

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

.why-card {
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-md);
    padding: 36px 28px;
    transition: all var(--transition);
}

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

.why-number {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.2);
    line-height: 1;
    margin-bottom: 16px;
}

.why-card h3 {
    font-size: 1.125rem;
    color: var(--white);
    margin-bottom: 12px;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
}

.why-card p {
    font-size: 0.938rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.65;
}

/* ---------- Testimonials ---------- */
.testimonials {
    padding: 100px 0;
    background: var(--off-white);
}

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

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

.testimonial-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.testimonial-quote {
    margin-bottom: 20px;
}

.testimonial-text {
    font-size: 1rem;
    color: var(--text-mid);
    line-height: 1.7;
    margin-bottom: 24px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.testimonial-avatar {
    width: 44px;
    height: 44px;
    background: var(--green-dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 600;
    font-size: 0.875rem;
}

.testimonial-name {
    display: block;
    font-weight: 600;
    font-size: 0.938rem;
    color: var(--text-dark);
}

.testimonial-location {
    display: block;
    font-size: 0.813rem;
    color: var(--text-light);
}

/* ---------- CTA Section ---------- */
.cta-section {
    padding: 80px 0;
    background: var(--off-white-dark);
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    margin-bottom: 16px;
}

.cta-text {
    font-size: 1.063rem;
    color: var(--text-mid);
    line-height: 1.7;
    margin-bottom: 32px;
}

.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ---------- Contact ---------- */
.contact {
    padding: 100px 0;
    background: var(--off-white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-description {
    font-size: 1rem;
    color: var(--text-mid);
    line-height: 1.7;
    margin-bottom: 32px;
}

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

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

.contact-icon {
    width: 48px;
    height: 48px;
    background: var(--green-pale);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-item strong {
    display: block;
    font-size: 0.813rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--green-dark);
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 0.938rem;
    color: var(--text-mid);
    line-height: 1.6;
}

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

.contact-item a:hover {
    text-decoration: underline;
}

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

.contact-form h3,
.form-success h3 {
    font-size: 1.5rem;
    margin-bottom: 24px;
}

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

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

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-mid);
    margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: 'Inter', sans-serif;
    font-size: 0.938rem;
    color: var(--text-dark);
    background: var(--off-white);
    transition: border-color var(--transition), box-shadow var(--transition);
    appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--green-dark);
    box-shadow: 0 0 0 3px rgba(26, 86, 50, 0.1);
}

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

.form-note {
    font-size: 0.813rem;
    color: var(--text-light);
    text-align: center;
    margin-top: 12px;
}

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

.form-success svg {
    margin: 0 auto 16px;
}

.form-success h3 {
    color: var(--green-dark);
    margin-bottom: 8px;
}

.form-success p {
    color: var(--text-mid);
    font-size: 0.938rem;
}

/* ---------- Footer ---------- */
.footer {
    background: #111;
    color: rgba(255, 255, 255, 0.7);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 48px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--white);
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 0.938rem;
    line-height: 1.65;
    max-width: 280px;
}

.footer-links h4,
.footer-contact h4 {
    font-family: 'Inter', sans-serif;
    font-size: 0.813rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--white);
    margin-bottom: 16px;
}

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

.footer-links a {
    font-size: 0.938rem;
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition);
}

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

.footer-contact p {
    font-size: 0.938rem;
    line-height: 1.65;
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 12px;
}

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

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-bottom p {
    font-size: 0.813rem;
    color: rgba(255, 255, 255, 0.4);
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.4);
}

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

/* ---------- Scroll Reveal ---------- */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero {
        min-height: auto;
        padding: 120px 0 80px;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-image img {
        height: 360px;
    }
    
    .hero-image-accent {
        display: none;
    }
    
    .hero-trust {
        gap: 16px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-stat {
        left: 20px;
        bottom: -20px;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .why-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-form-wrap {
        padding: 28px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
    }
    
    .hero-actions .btn {
        width: 100%;
        justify-content: center;
    }
    
    .hero-title {
        font-size: 2rem;
    }
}

/* ---------- Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
    
    .reveal {
        opacity: 1;
        transform: none;
    }
}