/* ========================================
   Chicago Comfort HVAC Services - Main Styles
   ======================================== */

/* ========== CSS Reset & Base Styles ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Primary Colors */
    --primary-blue: #1e3a8a;
    --primary-dark: #0f172a;
    --accent-orange: #f97316;
    --accent-red: #dc2626;
    
    /* Secondary Colors */
    --light-blue: #3b82f6;
    --sky-blue: #0ea5e9;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-600: #4b5563;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Fonts */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Poppins', sans-serif;
    
    /* Spacing */
    --container-width: 1200px;
    --section-padding: 80px 20px;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--gray-800);
    background: #ffffff;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--primary-dark);
    margin-bottom: 1rem;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
    color: var(--gray-600);
    font-size: 1.1rem;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

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

/* ========== Container ========== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: var(--section-padding);
}

/* ========== Header & Navigation ========== */
.header {
    background: #ffffff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.top-bar {
    background: var(--primary-blue);
    color: #ffffff;
    padding: 10px 0;
    font-size: 0.9rem;
}

.top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.top-bar-info {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

.top-bar-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.top-bar-item i {
    color: var(--accent-orange);
}

.top-bar-social {
    display: flex;
    gap: 15px;
}

.top-bar-social a {
    color: #ffffff;
    font-size: 1rem;
    transition: color 0.3s ease;
}

.top-bar-social a:hover {
    color: var(--accent-orange);
}

.navbar {
    padding: 15px 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 60px;
    width: auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 35px;
    align-items: center;
}

.nav-menu li a {
    color: var(--gray-800);
    font-weight: 500;
    font-size: 1rem;
    padding: 5px 0;
    position: relative;
}

.nav-menu li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-orange);
    transition: width 0.3s ease;
}

.nav-menu li a:hover::after,
.nav-menu li a.active::after {
    width: 100%;
}

.nav-menu li a:hover,
.nav-menu li a.active {
    color: var(--primary-blue);
}

/* Services Dropdown */
.nav-menu .dropdown {
    position: relative;
}

.nav-menu .dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: #ffffff;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    min-width: 280px;
    padding: 15px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    border-radius: 8px;
    z-index: 100;
}

.nav-menu .dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    padding: 0;
}

.dropdown-menu li a {
    display: block;
    padding: 12px 25px;
    color: var(--gray-800);
    font-size: 0.95rem;
}

.dropdown-menu li a::after {
    display: none;
}

.dropdown-menu li a:hover {
    background: var(--gray-100);
    color: var(--primary-blue);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.8rem;
    color: var(--primary-blue);
    cursor: pointer;
}

/* ========== Buttons ========== */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background: #ea580c;
    border-color: #ea580c;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-blue);
    border-color: var(--primary-blue);
}

.btn-secondary:hover {
    background: var(--primary-blue);
    color: #ffffff;
}

.btn-white {
    background: #ffffff;
    color: var(--primary-blue);
}

.btn-white:hover {
    background: var(--gray-100);
}

.btn-large {
    padding: 18px 40px;
    font-size: 1.1rem;
}

/* ========== Hero Section ========== */
.hero {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-dark) 100%);
    color: #ffffff;
    padding: 100px 20px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero .container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content h1 {
    color: #ffffff;
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.hero-content p {
    color: rgba(255,255,255,0.9);
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.hero-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 12px;
}

.hero-feature i {
    font-size: 1.5rem;
    color: var(--accent-orange);
}

.hero-feature span {
    font-size: 1rem;
    color: rgba(255,255,255,0.95);
}

.hero-image {
    position: relative;
}

.hero-image img {
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

/* Emergency Badge */
.emergency-badge {
    background: var(--accent-red);
    color: #ffffff;
    padding: 8px 20px;
    border-radius: 50px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    font-weight: 600;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* ========== Services Section ========== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.service-card {
    background: #ffffff;
    padding: 40px 30px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    text-align: center;
    border: 2px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 40px rgba(0,0,0,0.15);
    border-color: var(--accent-orange);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--light-blue), var(--sky-blue));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 2.5rem;
    color: #ffffff;
}

.service-card h3 {
    margin-bottom: 15px;
    font-size: 1.5rem;
}

.service-card p {
    color: var(--gray-600);
    margin-bottom: 20px;
}

/* ========== Why Choose Us Section ========== */
.why-choose {
    background: var(--gray-100);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.feature-item {
    background: #ffffff;
    padding: 35px 25px;
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
}

.feature-icon {
    font-size: 3rem;
    color: var(--accent-orange);
    margin-bottom: 20px;
}

.feature-item h4 {
    margin-bottom: 12px;
    font-size: 1.3rem;
}

/* ========== CTA Section ========== */
.cta-section {
    background: linear-gradient(135deg, var(--accent-orange) 0%, var(--accent-red) 100%);
    color: #ffffff;
    text-align: center;
    padding: 80px 20px;
}

.cta-section h2 {
    color: #ffffff;
    font-size: 2.8rem;
    margin-bottom: 20px;
}

.cta-section p {
    color: rgba(255,255,255,0.95);
    font-size: 1.2rem;
    margin-bottom: 30px;
}

.cta-phone {
    font-size: 2.5rem;
    font-weight: 700;
    color: #ffffff;
    margin: 20px 0;
    display: block;
}

/* ========== Testimonials Section ========== */
.testimonials {
    background: #ffffff;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.testimonial-card {
    background: var(--gray-100);
    padding: 35px;
    border-radius: 12px;
    position: relative;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: 20px;
    left: 30px;
    font-size: 5rem;
    color: var(--accent-orange);
    opacity: 0.2;
    font-family: Georgia, serif;
}

.testimonial-content {
    position: relative;
    z-index: 1;
}

.testimonial-text {
    font-style: italic;
    margin-bottom: 20px;
    color: var(--gray-800);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: var(--primary-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-weight: 700;
    font-size: 1.2rem;
}

.author-info h5 {
    margin-bottom: 3px;
    font-size: 1rem;
}

.author-info p {
    font-size: 0.9rem;
    margin: 0;
}

.testimonial-stars {
    color: #fbbf24;
    font-size: 1rem;
    margin-bottom: 15px;
}

/* ========== Section Title ========== */
.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.section-title p {
    font-size: 1.1rem;
    color: var(--gray-600);
    max-width: 700px;
    margin: 0 auto;
}

.section-title-left {
    text-align: left;
}

/* ========== Footer ========== */
.footer {
    background: var(--gray-900);
    color: rgba(255,255,255,0.8);
    padding: 60px 20px 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    color: #ffffff;
    margin-bottom: 20px;
    font-size: 1.3rem;
}

.footer-section p {
    color: rgba(255,255,255,0.7);
    line-height: 1.8;
}

.footer-logo img {
    height: 60px;
    margin-bottom: 20px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
    transition: color 0.3s ease;
}

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

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 15px;
}

.footer-contact-item i {
    color: var(--accent-orange);
    margin-top: 3px;
}

.business-hours-list {
    list-style: none;
}

.business-hours-list li {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-social {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    transition: all 0.3s ease;
}

.footer-social a:hover {
    background: var(--accent-orange);
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 25px;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255,255,255,0.6);
    font-size: 0.9rem;
}

/* ========== Contact Page ========== */
.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.contact-info-card {
    background: var(--gray-100);
    padding: 35px 25px;
    border-radius: 10px;
    text-align: center;
}

.contact-info-icon {
    font-size: 2.5rem;
    color: var(--accent-orange);
    margin-bottom: 15px;
}

.contact-info-card h4 {
    margin-bottom: 10px;
}

.contact-form-wrapper {
    background: #ffffff;
    padding: 50px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    margin-bottom: 50px;
}

.contact-form {
    display: grid;
    gap: 25px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--gray-800);
}

.form-group input,
.form-group textarea,
.form-group select {
    padding: 14px 18px;
    border: 2px solid var(--gray-300);
    border-radius: 6px;
    font-size: 1rem;
    font-family: var(--font-primary);
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-blue);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
}

.map-container {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.map-container iframe {
    width: 100%;
    height: 450px;
    border: 0;
}

/* ========== About Page ========== */
.about-hero {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-dark) 100%);
    color: #ffffff;
    padding: 80px 20px;
    text-align: center;
}

.about-hero h1 {
    color: #ffffff;
    font-size: 3rem;
    margin-bottom: 20px;
}

.about-hero p {
    color: rgba(255,255,255,0.9);
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin: 80px 0;
}

.about-text h2 {
    margin-bottom: 25px;
}

.about-text p {
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-image img {
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.15);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin: 50px 0;
}

.stat-item {
    text-align: center;
    padding: 30px 20px;
    background: var(--gray-100);
    border-radius: 10px;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-orange);
    margin-bottom: 10px;
}

.stat-label {
    font-size: 1.1rem;
    color: var(--gray-700);
}

/* ========== Blog Page ========== */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.blog-card {
    background: #ffffff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.blog-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 40px rgba(0,0,0,0.15);
}

.blog-image {
    height: 250px;
    background: var(--gray-300);
    position: relative;
    overflow: hidden;
}

.blog-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.blog-card:hover .blog-image img {
    transform: scale(1.1);
}

.blog-category {
    position: absolute;
    top: 15px;
    left: 15px;
    background: var(--accent-orange);
    color: #ffffff;
    padding: 6px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.blog-content {
    padding: 30px;
}

.blog-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 15px;
    font-size: 0.9rem;
    color: var(--gray-600);
}

.blog-meta i {
    color: var(--accent-orange);
}

.blog-content h3 {
    margin-bottom: 15px;
    font-size: 1.5rem;
}

.blog-content h3 a {
    color: var(--primary-dark);
    transition: color 0.3s ease;
}

.blog-content h3 a:hover {
    color: var(--accent-orange);
}

.blog-excerpt {
    color: var(--gray-600);
    margin-bottom: 20px;
    line-height: 1.7;
}

.read-more {
    color: var(--primary-blue);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.read-more:hover {
    color: var(--accent-orange);
}

/* ========== Service Page ========== */
.service-hero {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-dark) 100%);
    color: #ffffff;
    padding: 80px 20px;
    text-align: center;
}

.service-hero h1 {
    color: #ffffff;
    font-size: 3rem;
    margin-bottom: 20px;
}

.service-hero p {
    color: rgba(255,255,255,0.9);
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto;
}

.service-content {
    padding: 80px 20px;
}

.service-main {
    max-width: 900px;
    margin: 0 auto;
}

.service-main h2 {
    margin-top: 40px;
    margin-bottom: 20px;
    color: var(--primary-blue);
}

.service-main h3 {
    margin-top: 30px;
    margin-bottom: 15px;
    font-size: 1.5rem;
}

.service-main p {
    margin-bottom: 20px;
    line-height: 1.8;
    font-size: 1.05rem;
}

.service-main ul, .service-main ol {
    margin: 20px 0;
    padding-left: 30px;
}

.service-main li {
    margin-bottom: 12px;
    line-height: 1.7;
    color: var(--gray-600);
}

.service-highlight {
    background: var(--gray-100);
    padding: 35px;
    border-radius: 10px;
    margin: 40px 0;
    border-left: 4px solid var(--accent-orange);
}

.service-highlight h3 {
    color: var(--accent-orange);
    margin-top: 0;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.process-step {
    background: #ffffff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    text-align: center;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--accent-orange);
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 20px;
}

.process-step h4 {
    margin-bottom: 12px;
}

/* ========== Responsive Design ========== */
@media (max-width: 968px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }
    
    .hero .container {
        grid-template-columns: 1fr;
    }
    
    .hero-content h1 {
        font-size: 2.8rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 4px 20px rgba(0,0,0,0.1);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-20px);
        transition: all 0.3s ease;
    }
    
    .nav-menu.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .nav-menu .dropdown-menu {
        position: static;
        box-shadow: none;
        transform: none;
        opacity: 1;
        visibility: visible;
        display: none;
        padding: 10px 0 10px 20px;
    }
    
    .nav-menu .dropdown.active .dropdown-menu {
        display: block;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .contact-form-wrapper {
        padding: 30px 20px;
    }
}

@media (max-width: 640px) {
    :root {
        --section-padding: 50px 20px;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    
    .hero {
        padding: 60px 20px;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-features {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .top-bar .container {
        justify-content: center;
        text-align: center;
    }
    
    .top-bar-info {
        flex-direction: column;
        gap: 10px;
    }
    
    .top-bar-social {
        margin-top: 10px;
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-phone {
        font-size: 1.8rem;
    }
}

/* ========== Utility Classes ========== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }

.bg-light { background: var(--gray-100); }
.bg-white { background: #ffffff; }

/* ========== Animations ========== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}