/* ============================================
   All Seasons Air Conditioning & Heating
   Custom Styles
   ============================================ */

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

:root {
    --green-900: #052e16;
    --green-800: #14532d;
    --green-700: #166534;
    --green-600: #15803a;
    --green-500: #16a34a;
    --green-400: #22c55e;
    --green-300: #4ade80;
    --green-100: #dcfce7;
    --green-50:  #f0fdf4;
    --stone-900: #1c1917;
    --stone-800: #292524;
    --stone-700: #44403c;
    --stone-600: #57534e;
    --stone-500: #78716c;
    --stone-400: #a8a29e;
    --stone-300: #d6d3d1;
    --stone-200: #e7e5e4;
    --stone-100: #f5f5f4;
    --stone-50:  #fafaf9;
    --white:     #ffffff;
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-serif: 'Playfair Display', Georgia, serif;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.06), 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 25px -3px rgba(0,0,0,0.1), 0 4px 10px -2px rgba(0,0,0,0.06);
    --shadow-xl: 0 20px 40px -4px rgba(0,0,0,0.12);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font-sans);
    color: var(--stone-800);
    background: var(--stone-50);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

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

ul {
    list-style: none;
}

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

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

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.9375rem;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--green-700);
    color: var(--white);
    border-color: var(--green-700);
}

.btn-primary:hover {
    background: var(--green-800);
    border-color: var(--green-800);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

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

.btn-outline-light:hover {
    background: var(--white);
    color: var(--green-800);
    border-color: var(--white);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1rem;
    border-radius: var(--radius-md);
}

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

/* --- Section Tags --- */
.section-tag {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--green-700);
    background: var(--green-100);
    padding: 6px 14px;
    border-radius: 100px;
    margin-bottom: 16px;
}

.section-tag--light {
    color: var(--green-300);
    background: rgba(52, 211, 153, 0.15);
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    margin-bottom: 16px;
    color: var(--stone-900);
}

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

.section-subtitle {
    font-size: 1.0625rem;
    color: var(--stone-600);
    max-width: 600px;
    line-height: 1.7;
}

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

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

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

/* --- Header --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(250, 250, 249, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--stone-200);
    transition: box-shadow var(--transition);
}

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

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

.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--stone-900);
}

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

.logo-text {
    line-height: 1;
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links a {
    padding: 8px 16px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--stone-700);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

.nav-links a:hover {
    color: var(--green-700);
    background: var(--green-50);
}

.nav-cta {
    padding: 10px 20px;
    font-size: 0.875rem;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    color: var(--stone-700);
}

/* --- Hero --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    overflow: hidden;
}

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

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

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(5, 46, 22, 0.92) 0%,
        rgba(20, 83, 45, 0.85) 50%,
        rgba(22, 101, 52, 0.78) 100%
    );
}

.hero-pattern {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(255,255,255,0.04) 1px, transparent 1px);
    background-size: 24px 24px;
}

.hero-content {
    position: relative;
    z-index: 1;
    padding: 80px 24px;
    max-width: 800px;
}

.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(--green-300);
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 8px 18px;
    border-radius: 100px;
    margin-bottom: 28px;
    backdrop-filter: blur(4px);
}

.hero-title {
    font-size: clamp(2.25rem, 5.5vw, 4rem);
    color: var(--white);
    margin-bottom: 24px;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    color: rgba(255,255,255,0.8);
    line-height: 1.7;
    margin-bottom: 40px;
    max-width: 600px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 56px;
}

.hero-trust {
    display: flex;
    flex-wrap: wrap;
    gap: 32px;
}

.trust-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.85);
    font-size: 0.9375rem;
    font-weight: 500;
}

.trust-item svg {
    color: var(--green-400);
}

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

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

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

.service-card:hover {
    border-color: var(--green-300);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

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

.service-title {
    font-family: var(--font-sans);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--stone-900);
    margin-bottom: 12px;
}

.service-desc {
    font-size: 0.9375rem;
    color: var(--stone-600);
    line-height: 1.7;
    margin-bottom: 20px;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--green-700);
    transition: gap var(--transition);
}

.service-link:hover {
    gap: 10px;
}

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

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

.about-images {
    position: relative;
}

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

.about-img-main img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.about-img-secondary {
    position: absolute;
    bottom: -32px;
    right: -24px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 4px solid var(--white);
}

.about-img-secondary img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.about-experience {
    position: absolute;
    top: -20px;
    left: -20px;
    background: var(--green-700);
    color: var(--white);
    padding: 20px 24px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.about-experience .exp-number {
    display: block;
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
}

.about-experience .exp-label {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    opacity: 0.85;
    margin-top: 4px;
}

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

.about-text {
    font-size: 1rem;
    color: var(--stone-600);
    line-height: 1.8;
    margin-bottom: 16px;
}

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

.about-feature {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--stone-700);
}

.about-feature svg {
    color: var(--green-600);
    flex-shrink: 0;
}

/* --- Why Us --- */
.why-us {
    padding: 100px 0;
    background: var(--green-800);
    position: relative;
    overflow: hidden;
}

.why-us::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 20px 20px;
}

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

.why-card {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    transition: all var(--transition);
}

.why-card:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.2);
    transform: translateY(-4px);
}

.why-number {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--green-400);
    line-height: 1;
    margin-bottom: 16px;
    opacity: 0.6;
}

.why-title {
    font-family: var(--font-sans);
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 10px;
}

.why-desc {
    font-size: 0.9375rem;
    color: rgba(255,255,255,0.7);
    line-height: 1.7;
}

/* --- Testimonials --- */
.testimonials {
    padding: 100px 0;
    background: var(--stone-50);
}

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

.testimonial-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    border: 1px solid var(--stone-200);
    position: relative;
    transition: all var(--transition);
}

.testimonial-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--green-200, #bbf7d0);
}

.testimonial-quote {
    color: var(--green-200, #bbf7d0);
    margin-bottom: 16px;
}

.testimonial-text {
    font-size: 0.9375rem;
    color: var(--stone-600);
    line-height: 1.8;
    margin-bottom: 24px;
    font-style: italic;
}

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

.author-avatar {
    flex-shrink: 0;
}

.author-name {
    display: block;
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--stone-800);
}

.author-location {
    display: block;
    font-size: 0.8125rem;
    color: var(--stone-500);
}

/* --- CTA --- */
.cta {
    padding: 80px 0;
    background: var(--green-700);
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0,0,0,0.15) 0%, transparent 60%);
}

.cta-inner {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap;
}

.cta-content {
    flex: 1;
    min-width: 280px;
}

.cta-title {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    color: var(--white);
    margin-bottom: 12px;
}

.cta-text {
    font-size: 1.0625rem;
    color: rgba(255,255,255,0.8);
    line-height: 1.7;
}

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

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

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

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

.contact-desc {
    font-size: 1rem;
    color: var(--stone-600);
    line-height: 1.7;
    margin-bottom: 32px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 32px;
}

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

.contact-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--green-50);
    border: 1px solid var(--green-100);
    border-radius: var(--radius-sm);
    color: var(--green-700);
    flex-shrink: 0;
}

.contact-label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--stone-500);
    margin-bottom: 2px;
}

.contact-value {
    display: block;
    font-size: 1rem;
    font-weight: 500;
    color: var(--stone-800);
}

.contact-link {
    color: var(--green-700);
    transition: color var(--transition);
}

.contact-link:hover {
    color: var(--green-600);
    text-decoration: underline;
}

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

/* --- Form --- */
.contact-form-wrapper {
    background: var(--stone-50);
    border: 1px solid var(--stone-200);
    border-radius: var(--radius-xl);
    padding: 40px;
}

.form-title {
    font-family: var(--font-sans);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--stone-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: 0.875rem;
    font-weight: 600;
    color: var(--stone-700);
    margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--stone-300);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    color: var(--stone-800);
    background: var(--white);
    transition: all var(--transition);
    appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--green-500);
    box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.15);
}

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

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

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

.form-success svg {
    color: var(--green-500);
    margin-bottom: 16px;
}

.form-success h4 {
    font-family: var(--font-sans);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--stone-900);
    margin-bottom: 8px;
}

.form-success p {
    font-size: 0.9375rem;
    color: var(--stone-600);
}

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

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

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-desc {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--stone-500);
    max-width: 280px;
}

.footer-col h4 {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--stone-300);
    margin-bottom: 20px;
}

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

.footer-col a {
    font-size: 0.9375rem;
    color: var(--stone-500);
    transition: color var(--transition);
}

.footer-col a:hover {
    color: var(--green-400);
}

.footer-contact {
    gap: 14px;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.footer-contact svg {
    flex-shrink: 0;
    margin-top: 3px;
    color: var(--green-500);
}

.footer-bottom {
    border-top: 1px solid var(--stone-800);
    padding: 24px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-bottom p {
    font-size: 0.8125rem;
    color: var(--stone-600);
}

.footer-bottom a {
    color: var(--stone-500);
    transition: color var(--transition);
}

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

/* --- Mobile Navigation --- */
@media (max-width: 900px) {
    .nav-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .nav-links {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        align-items: stretch;
        padding: 16px 24px 24px;
        border-bottom: 1px solid var(--stone-200);
        box-shadow: var(--shadow-lg);
        transform: translateY(-120%);
        opacity: 0;
        transition: all 0.3s ease;
        pointer-events: none;
        z-index: 999;
    }

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

    .nav-links a {
        padding: 12px 0;
        border-radius: 0;
        font-size: 1rem;
        border-bottom: 1px solid var(--stone-100);
    }

    .nav-links a:last-child {
        border-bottom: none;
    }

    .nav-cta {
        display: inline-flex;
        justify-content: center;
        margin-top: 8px;
    }
}

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

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

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

@media (max-width: 768px) {
    .hero-content {
        padding: 60px 24px;
    }

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

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

    .hero-trust {
        flex-direction: column;
        gap: 12px;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .about-img-secondary {
        right: 0;
    }

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

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

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

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

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

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

    .cta-inner {
        flex-direction: column;
        text-align: center;
    }

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

    .cta-actions .btn {
        justify-content: center;
    }

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

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .why-grid {
        grid-template-columns: 1fr;
    }

    .about-img-main img {
        height: 280px;
    }

    .about-img-secondary {
        position: relative;
        bottom: auto;
        right: auto;
        margin-top: -24px;
        margin-left: 16px;
    }
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
    html {
        scroll-behavior: auto;
    }
}