/* =================================
   AirDuctVet Website - Main Stylesheet
   ================================= */

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

:root {
    --primary-color: #1e3a8a;
    --secondary-color: #3b82f6;
    --accent-color: #fbbf24;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --white: #ffffff;
    --success: #10b981;
    --danger: #ef4444;
    --border-color: #e5e7eb;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
}

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

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

ul {
    list-style: none;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

.header-top {
    background: var(--primary-color);
    color: var(--white);
    padding: 10px 0;
    font-size: 0.9rem;
}

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

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

.header-info-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-info-item i {
    color: var(--accent-color);
}

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

.social-links a {
    color: var(--white);
    font-size: 1.1rem;
    transition: color 0.3s ease;
}

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

.header-main {
    padding: 15px 0;
}

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

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

nav ul {
    display: flex;
    gap: 30px;
    align-items: center;
}

nav ul li a {
    color: var(--text-dark);
    font-weight: 500;
    padding: 8px 0;
    position: relative;
}

nav ul li a:hover,
nav ul li a.active {
    color: var(--secondary-color);
}

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

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

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-dark);
    cursor: pointer;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.1" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,112C672,96,768,96,864,112C960,128,1056,160,1152,160C1248,160,1344,128,1392,112L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
    opacity: 0.3;
}

.hero .container {
    position: relative;
    z-index: 1;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    font-weight: 700;
    line-height: 1.2;
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 15px 35px;
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.3s ease;
    font-size: 1rem;
}

.btn-primary {
    background: var(--accent-color);
    color: var(--text-dark);
}

.btn-primary:hover {
    background: #f59e0b;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(251, 191, 36, 0.4);
}

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

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

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

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

/* Section Styles */
section {
    padding: 80px 0;
}

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

.section-header h2 {
    font-size: 2.5rem;
    color: var(--text-dark);
    margin-bottom: 15px;
    font-weight: 700;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
}

.section-alt {
    background: var(--bg-light);
}

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

.service-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid var(--border-color);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    border-color: var(--secondary-color);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-dark);
}

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

/* Features/Benefits Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--secondary-color);
    color: var(--white);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.feature-content h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.feature-content p {
    color: var(--text-light);
}

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

.step-item {
    text-align: center;
    position: relative;
}

.step-number {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0 auto 20px;
}

.step-item h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.step-item p {
    color: var(--text-light);
}

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

.testimonial-card {
    background: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.testimonial-rating {
    color: var(--accent-color);
    font-size: 1.2rem;
    margin-bottom: 15px;
}

.testimonial-text {
    color: var(--text-light);
    margin-bottom: 20px;
    font-style: italic;
    line-height: 1.8;
}

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

.testimonial-avatar {
    width: 50px;
    height: 50px;
    background: var(--secondary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.2rem;
}

.testimonial-info h4 {
    font-size: 1.1rem;
    color: var(--text-dark);
    margin-bottom: 5px;
}

.testimonial-info p {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    text-align: center;
    padding: 80px 0;
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.cta-section p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Contact Form */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-info-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.contact-info-icon {
    width: 50px;
    height: 50px;
    background: var(--secondary-color);
    color: var(--white);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.contact-info-text h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.contact-info-text p {
    color: var(--text-light);
}

.contact-form {
    background: var(--bg-light);
    padding: 40px;
    border-radius: 10px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-dark);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

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

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

.form-error {
    color: var(--danger);
    font-size: 0.9rem;
    margin-top: 5px;
    display: none;
}

.form-success {
    background: var(--success);
    color: var(--white);
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    display: none;
}

/* Map Section */
.map-container {
    margin-top: 50px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

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

/* Blog Grid */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.blog-card {
    background: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.blog-card:hover {
    transform: translateY(-5px);
}

.blog-image {
    height: 250px;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    position: relative;
    overflow: hidden;
}

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

.blog-category {
    position: absolute;
    top: 15px;
    left: 15px;
    background: var(--accent-color);
    color: var(--text-dark);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.blog-content {
    padding: 25px;
}

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

.blog-meta i {
    margin-right: 5px;
}

.blog-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.blog-card p {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.7;
}

/* Service Detail Page */
.service-hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 60px 0;
    text-align: center;
}

.service-hero h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.service-detail-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 50px;
    margin-top: 50px;
}

.service-main {
    line-height: 1.8;
}

.service-main h2 {
    font-size: 2rem;
    color: var(--text-dark);
    margin-top: 40px;
    margin-bottom: 20px;
}

.service-main h3 {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin-top: 30px;
    margin-bottom: 15px;
}

.service-main p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.service-main ul {
    list-style: none;
    margin: 20px 0;
}

.service-main ul li {
    padding: 10px 0 10px 30px;
    position: relative;
    color: var(--text-light);
}

.service-main ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: 700;
}

.service-sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.sidebar-widget {
    background: var(--bg-light);
    padding: 30px;
    border-radius: 10px;
    margin-bottom: 30px;
}

.sidebar-widget h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.sidebar-services {
    list-style: none;
}

.sidebar-services li {
    margin-bottom: 10px;
}

.sidebar-services a {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    background: var(--white);
    border-radius: 5px;
    color: var(--text-dark);
    transition: all 0.3s ease;
}

.sidebar-services a:hover {
    background: var(--secondary-color);
    color: var(--white);
    transform: translateX(5px);
}

.sidebar-services a i {
    margin-right: 10px;
}

/* FAQ Section */
.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    margin-bottom: 15px;
    border-radius: 10px;
    overflow: hidden;
    border: 2px solid var(--border-color);
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 20px 25px;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-dark);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s ease;
}

.faq-question:hover {
    background: var(--bg-light);
}

.faq-question i {
    color: var(--secondary-color);
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer-content {
    padding: 0 25px 20px;
    color: var(--text-light);
    line-height: 1.8;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

/* Footer */
footer {
    background: var(--text-dark);
    color: var(--white);
    padding-top: 60px;
}

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

.footer-widget h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: var(--white);
}

.footer-widget p {
    color: #9ca3af;
    line-height: 1.8;
    margin-bottom: 20px;
}

.footer-widget ul {
    list-style: none;
}

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

.footer-widget ul li a {
    color: #9ca3af;
    transition: color 0.3s ease;
    display: flex;
    align-items: center;
}

.footer-widget ul li a:hover {
    color: var(--accent-color);
}

.footer-widget ul li a i {
    margin-right: 8px;
    width: 20px;
}

.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: var(--white);
    transition: all 0.3s ease;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 25px 0;
    text-align: center;
    color: #9ca3af;
}

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

.mt-20 {
    margin-top: 20px;
}

.mt-40 {
    margin-top: 40px;
}

.mb-20 {
    margin-bottom: 20px;
}

.mb-40 {
    margin-bottom: 40px;
}

/* Responsive Design */
@media (max-width: 992px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .service-detail-content {
        grid-template-columns: 1fr;
    }

    .service-sidebar {
        position: static;
    }

    nav ul {
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .header-top .container {
        flex-direction: column;
        gap: 15px;
    }

    .header-info {
        flex-direction: column;
        gap: 10px;
    }

    .menu-toggle {
        display: block;
    }

    nav {
        position: fixed;
        top: 0;
        left: -100%;
        width: 280px;
        height: 100vh;
        background: var(--white);
        padding: 80px 30px 30px;
        box-shadow: 5px 0 20px rgba(0, 0, 0, 0.1);
        transition: left 0.3s ease;
        z-index: 999;
    }

    nav.active {
        left: 0;
    }

    nav ul {
        flex-direction: column;
        gap: 0;
    }

    nav ul li {
        width: 100%;
        border-bottom: 1px solid var(--border-color);
    }

    nav ul li a {
        display: block;
        padding: 15px 0;
    }

    .nav-close {
        position: absolute;
        top: 20px;
        right: 20px;
        background: none;
        border: none;
        font-size: 1.8rem;
        color: var(--text-dark);
        cursor: pointer;
    }

    .hero {
        padding: 60px 0;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-buttons .btn {
        width: 100%;
        max-width: 300px;
    }

    section {
        padding: 50px 0;
    }

    .section-header h2 {
        font-size: 1.8rem;
    }

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

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

    .footer-content {
        grid-template-columns: 1fr;
    }

    .service-hero h1 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.75rem;
    }

    .section-header h2 {
        font-size: 1.6rem;
    }

    .btn {
        padding: 12px 25px;
        font-size: 0.95rem;
    }

    .contact-form {
        padding: 25px;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Loading Spinner */
.spinner {
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--secondary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}