/* ============================================
   Blake's HVAC - Modern HVAC Service Website
   Emerald Green + Cream Color Palette
   ============================================ */

/* CSS Custom Properties */
:root {
    --emerald-50: #ecfdf5;
    --emerald-100: #d1fae5;
    --emerald-200: #a7f3d0;
    --emerald-300: #6ee7b7;
    --emerald-400: #34d399;
    --emerald-500: #10b981;
    --emerald-600: #059669;
    --emerald-700: #047857;
    --emerald-800: #065f46;
    --emerald-900: #064e3b;
    
    --cream-50: #fefdf8;
    --cream-100: #fefce8;
    --cream-200: #fef9c3;
    --cream-300: #fef08a;
    --cream-500: #f5f5dc;
    --cream-700: #e8e4d9;
    --cream-800: #d4cfc0;
    
    --neutral-50: #fafafa;
    --neutral-100: #f5f5f5;
    --neutral-200: #e5e5e5;
    --neutral-300: #d4d4d4;
    --neutral-400: #a3a3a3;
    --neutral-500: #737373;
    --neutral-600: #525252;
    --neutral-700: #404040;
    --neutral-800: #262626;
    --neutral-900: #171717;
    --neutral-950: #0a0a0a;
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-serif: 'Playfair Display', Georgia, serif;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px 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;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    color: var(--neutral-800);
    background-color: var(--cream-50);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: var(--emerald-600);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

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

/* ============================================
   Header
   ============================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(254, 253, 248, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--cream-700);
    transition: box-shadow 0.3s ease;
}

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

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--emerald-800);
    text-decoration: none;
}

.logo-icon {
    color: var(--emerald-600);
}

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

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 28px;
}

.main-nav a {
    color: var(--neutral-700);
    font-weight: 500;
    font-size: 0.9375rem;
    text-decoration: none;
    transition: color 0.2s ease;
}

.main-nav a:hover {
    color: var(--emerald-600);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--neutral-700);
    padding: 8px;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.9375rem;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.btn-primary {
    background: var(--emerald-600);
    color: #ffffff;
    border-color: var(--emerald-600);
}

.btn-primary:hover {
    background: var(--emerald-700);
    border-color: var(--emerald-700);
    color: #ffffff;
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--emerald-700);
    border-color: var(--emerald-600);
}

.btn-outline:hover {
    background: var(--emerald-50);
    color: var(--emerald-800);
}

.btn-white {
    background: #ffffff;
    color: var(--emerald-700);
    border-color: #ffffff;
}

.btn-white:hover {
    background: var(--cream-50);
    color: var(--emerald-800);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-outline-white {
    background: transparent;
    color: #ffffff;
    border-color: #ffffff;
}

.btn-outline-white:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1rem;
}

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

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

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--emerald-800) 0%, var(--emerald-600) 35%, var(--emerald-500) 65%, var(--cream-200) 100%);
    z-index: 0;
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(6, 79, 59, 0.4) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 20%, rgba(16, 185, 129, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse at 60% 80%, rgba(254, 252, 232, 0.2) 0%, transparent 40%);
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 780px;
    text-align: center;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 50px;
    color: #ffffff;
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 24px;
    backdrop-filter: blur(4px);
}

.hero h1 {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    color: #ffffff;
    line-height: 1.15;
    margin-bottom: 24px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
}

.hero p {
    font-size: clamp(1.0625rem, 2vw, 1.25rem);
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
    margin-bottom: 40px;
    max-width: 620px;
    margin-left: auto;
    margin-right: auto;
}

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

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 700;
    color: #ffffff;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.8);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 500;
}

.stat-divider {
    width: 1px;
    height: 48px;
    background: rgba(255, 255, 255, 0.25);
    align-self: center;
}

/* ============================================
   Section Shared
   ============================================ */
.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 64px;
}

.section-tag {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--emerald-600);
    margin-bottom: 12px;
}

.section-header h2 {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    color: var(--neutral-900);
    line-height: 1.2;
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.0625rem;
    color: var(--neutral-600);
    line-height: 1.7;
}

section {
    padding: 100px 0;
}

/* ============================================
   Services Section
   ============================================ */
.services {
    background: var(--cream-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(--cream-700);
    transition: all 0.3s ease;
}

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

.service-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--emerald-50);
    border-radius: var(--radius-md);
    color: var(--emerald-600);
    margin-bottom: 20px;
}

.service-card h3 {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--neutral-900);
    margin-bottom: 12px;
}

.service-card p {
    font-size: 0.9375rem;
    color: var(--neutral-600);
    line-height: 1.7;
}

/* ============================================
   About Section
   ============================================ */
.about {
    background: #ffffff;
}

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

.about-image {
    position: relative;
}

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

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

.about-content .section-tag {
    margin-bottom: 12px;
}

.about-content h2 {
    font-family: var(--font-serif);
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 700;
    color: var(--neutral-900);
    line-height: 1.25;
    margin-bottom: 20px;
}

.about-content > p {
    font-size: 1rem;
    color: var(--neutral-600);
    line-height: 1.8;
    margin-bottom: 16px;
}

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

.about-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
    color: var(--neutral-700);
    font-size: 0.9375rem;
}

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

/* ============================================
   Why Us Section
   ============================================ */
.why-us {
    background: var(--neutral-950);
    color: #ffffff;
}

.why-us .section-tag {
    color: var(--emerald-400);
}

.why-us .section-header h2 {
    color: #ffffff;
}

.why-us .section-header p {
    color: var(--neutral-400);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.feature-block {
    background: var(--neutral-900);
    border: 1px solid var(--neutral-800);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    transition: all 0.3s ease;
}

.feature-block:hover {
    border-color: var(--emerald-700);
    transform: translateY(-2px);
}

.feature-number {
    font-family: var(--font-serif);
    font-size: 3rem;
    font-weight: 700;
    color: var(--emerald-600);
    line-height: 1;
    margin-bottom: 16px;
}

.feature-block h3 {
    font-family: var(--font-serif);
    font-size: 1.375rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 12px;
}

.feature-block p {
    font-size: 0.9375rem;
    color: var(--neutral-400);
    line-height: 1.7;
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
    background: linear-gradient(135deg, var(--emerald-700) 0%, var(--emerald-600) 50%, var(--emerald-500) 100%);
    padding: 80px 0;
    text-align: center;
}

.cta-content h2 {
    font-family: var(--font-serif);
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 1.0625rem;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.7;
    max-width: 560px;
    margin: 0 auto 32px;
}

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

/* ============================================
   Contact Section
   ============================================ */
.contact {
    background: var(--cream-50);
}

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

.contact-info .section-tag {
    margin-bottom: 12px;
}

.contact-info h2 {
    font-family: var(--font-serif);
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 700;
    color: var(--neutral-900);
    line-height: 1.25;
    margin-bottom: 16px;
}

.contact-info > p {
    font-size: 1rem;
    color: var(--neutral-600);
    line-height: 1.7;
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.contact-item {
    display: flex;
    gap: 20px;
}

.contact-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--emerald-50);
    border-radius: var(--radius-md);
    color: var(--emerald-600);
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--neutral-500);
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 1rem;
    color: var(--neutral-800);
    line-height: 1.6;
}

.contact-item a {
    color: var(--emerald-700);
    font-weight: 600;
}

.contact-item a:hover {
    color: var(--emerald-800);
}

/* Contact Form */
.contact-form-wrapper {
    background: #ffffff;
    border-radius: var(--radius-lg);
    padding: 40px;
    border: 1px solid var(--cream-700);
    box-shadow: var(--shadow-lg);
}

.contact-form h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--neutral-900);
    margin-bottom: 28px;
}

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

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--neutral-700);
    margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--neutral-200);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    color: var(--neutral-800);
    background: var(--cream-50);
    transition: border-color 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(--emerald-500);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

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

.form-success {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px 20px;
    color: var(--emerald-700);
}

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

.form-success p {
    font-size: 1rem;
    color: var(--neutral-700);
    line-height: 1.6;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
    background: var(--neutral-950);
    color: var(--neutral-400);
    padding: 64px 0 32px;
}

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

.logo-light {
    color: #ffffff;
}

.footer-brand p {
    margin-top: 16px;
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--neutral-500);
}

.footer-links h4,
.footer-contact h4 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--neutral-300);
    margin-bottom: 20px;
}

.footer-links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: var(--neutral-500);
    font-size: 0.9375rem;
    text-decoration: none;
    transition: color 0.2s ease;
}

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

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

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

.footer-bottom {
    border-top: 1px solid var(--neutral-800);
    padding-top: 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--neutral-500);
}

/* ============================================
   Animations (Progressive Enhancement)
   ============================================ */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.6s ease, transform 0.6s ease;
    }
    
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
    .services-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;
        align-items: center;
        justify-content: center;
    }
    
    .main-nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(254, 253, 248, 0.98);
        backdrop-filter: blur(10px);
        padding: 24px;
        border-bottom: 1px solid var(--cream-700);
        box-shadow: var(--shadow-lg);
        transform: translateY(-120%);
        transition: transform 0.3s ease;
    }
    
    .main-nav.open {
        transform: translateY(0);
    }
    
    .main-nav ul {
        flex-direction: column;
        gap: 20px;
        margin-bottom: 20px;
    }
    
    .main-nav .btn {
        width: 100%;
        justify-content: center;
    }
    
    .hero {
        padding: 100px 24px 60px;
        min-height: auto;
    }
    
    .hero-stats {
        gap: 24px;
    }
    
    .stat-divider {
        display: none;
    }
    
    .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-features {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-form-wrapper {
        padding: 28px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    section {
        padding: 64px 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-actions .btn {
        width: 100%;
        justify-content: center;
    }
    
    .cta-actions {
        flex-direction: column;
        width: 100%;
        max-width: 320px;
        margin: 0 auto;
    }
    
    .cta-actions .btn {
        width: 100%;
        justify-content: center;
    }
}