/* ========================================
   Premier Invisible Grills - Main Stylesheet
   Modern, Responsive, SEO-Optimized Design
   ======================================== */

:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #3b82f6;
    --dark-color: #1e293b;
    --light-color: #f8fafc;
    --text-color: #334155;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --gradient-1: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
    --gradient-2: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #ffffff;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

/* ========================================
   HEADER & NAVIGATION
   ======================================== */

header {
    background: #ffffff;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

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

.header-top {
    background: var(--gradient-1);
    color: #ffffff;
    padding: 10px 0;
    font-size: 0.9rem;
}

.header-top-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.contact-info {
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
}

.contact-info a {
    color: #ffffff;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}

.contact-info a:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

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

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 60px;
    width: auto;
    transition: var(--transition);
}

.logo img:hover {
    transform: scale(1.05);
}

nav ul {
    display: flex;
    gap: 5px;
    align-items: center;
}

nav ul li {
    position: relative;
}

nav ul li a {
    padding: 10px 20px;
    display: block;
    color: var(--dark-color);
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: 8px;
    transition: var(--transition);
}

nav ul li a:hover {
    background: var(--primary-color);
    color: #ffffff;
    transform: translateY(-2px);
}

/* Dropdown Menu */
.dropdown {
    position: relative;
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: #ffffff;
    min-width: 250px;
    box-shadow: var(--shadow-xl);
    border-radius: 8px;
    overflow: hidden;
    z-index: 1000;
    margin-top: 0;
    padding-top: 10px;
    animation: fadeInDown 0.3s ease;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown:hover .dropdown-content {
    display: block;
}

.dropdown-content a {
    padding: 12px 20px;
    display: block;
    color: var(--text-color);
    border-radius: 0;
    border-bottom: 1px solid var(--border-color);
}

.dropdown-content a:last-child {
    border-bottom: none;
}

.dropdown-content a:hover {
    background: var(--light-color);
    color: var(--primary-color);
    padding-left: 25px;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
}

.mobile-menu-toggle span {
    width: 30px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
    transition: var(--transition);
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero-section {
    position: relative;
    height: 600px;
    overflow: hidden;
}

.hero-slider {
    position: relative;
    width: 100%;
    height: 100%;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.hero-slide.active {
    opacity: 1;
    z-index: 1;
}

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

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    max-width: 800px;
    text-align: center;
    color: #ffffff;
    padding: 20px;
    animation: fadeInUp 1s ease;
}

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

.hero-content h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 30px;
    font-weight: 400;
}

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

.btn {
    padding: 15px 35px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-primary {
    background: #ffffff;
    color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.btn-outline {
    background: transparent;
    color: #ffffff;
    border: 2px solid #ffffff;
}

.btn-outline:hover {
    background: #ffffff;
    color: var(--primary-color);
    transform: translateY(-3px);
}

.slider-controls {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: var(--transition);
}

.slider-dot.active {
    background: #ffffff;
    width: 30px;
    border-radius: 6px;
}

/* ========================================
   SERVICE/PAGE HERO SECTION
   ======================================== */

.service-hero {
    background: var(--gradient-1);
    padding: 80px 0;
    text-align: center;
    color: #ffffff;
    position: relative;
    overflow: hidden;
}

.service-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;
}

.service-hero .container {
    position: relative;
    z-index: 1;
}

.service-hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 15px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    animation: fadeInUp 0.8s ease;
}

.service-hero p {
    font-size: 1.3rem;
    opacity: 0.95;
    max-width: 600px;
    margin: 0 auto;
    animation: fadeInUp 1s ease;
}

/* ========================================
   SECTIONS
   ======================================== */

.section {
    padding: 80px 0;
}

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

.section-header {
    text-align: center;
    margin-bottom: 5px;
    animation: fadeInUp 0.8s ease;
}

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

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-1);
    border-radius: 2px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-color);
    margin-top: 25px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Background Variations */
.section-light {
    background: var(--light-color);
}

.section-gradient {
    background: var(--gradient-1);
    color: #ffffff;
}

.section-gradient .section-header h2,
.section-gradient .section-header p {
    color: #ffffff;
}

/* ========================================
   QUICK CONTACT FORM
   ======================================== */

.quick-contact-form {
    background: #ffffff;
    border-radius: 15px;
    padding: 40px;
    box-shadow: var(--shadow-xl);
    max-width: 600px;
    margin: 0 auto;
    animation: fadeInUp 0.8s ease;
}

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

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.btn-submit {
    background: var(--gradient-1);
    color: #ffffff;
    width: 100%;
    padding: 15px;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ========================================
   GRID LAYOUTS
   ======================================== */

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

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

/* ========================================
   CARDS
   ======================================== */

.card {
    background: #ffffff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.card-img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: var(--transition);
}

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

.card-img-wrapper {
    overflow: hidden;
    position: relative;
}

.card-body {
    padding: 25px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.card-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.card-text {
    color: var(--text-color);
    margin-bottom: 20px;
    flex-grow: 1;
}

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

.card-link:hover {
    gap: 15px;
}

/* ========================================
   HIGHLIGHTS / FEATURES
   ======================================== */

.highlight-box {
    background: #ffffff;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 2px solid transparent;
}

.highlight-box:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.highlight-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
    color: #ffffff;
}

.highlight-box h3 {
    font-size: 1.3rem;
    color: var(--dark-color);
    margin-bottom: 15px;
    font-weight: 700;
}

.highlight-box p {
    color: var(--text-color);
}

/* ========================================
   REVIEWS
   ======================================== */

.review-card {
    background: #ffffff;
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border-left: 4px solid var(--primary-color);
}

.review-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.review-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.review-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 1.5rem;
    font-weight: 700;
}

.review-info h4 {
    font-size: 1.2rem;
    color: var(--dark-color);
    margin-bottom: 5px;
}

.review-stars {
    color: #fbbf24;
    font-size: 1.1rem;
}

.review-text {
    color: var(--text-color);
    line-height: 1.8;
    font-style: italic;
}

/* ========================================
   FOOTER
   ======================================== */

footer {
    background: var(--dark-color);
    color: #ffffff;
    padding: 60px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 1.4rem;
    margin-bottom: 20px;
    color: #ffffff;
    font-weight: 700;
}

.footer-logo img {
    height: 180px;
    margin-bottom: 20px;
}

.footer-section p {
    color: #cbd5e1;
    line-height: 1.8;
    margin-bottom: 15px;
}

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

.footer-section ul li a {
    color: #cbd5e1;
    transition: var(--transition);
    display: inline-block;
}

.footer-section ul li a:hover {
    color: #ffffff;
    padding-left: 5px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 25px 0;
    text-align: center;
    color: #cbd5e1;
}

.footer-bottom a {
    color: var(--accent-color);
    font-weight: 600;
}

.footer-bottom a:hover {
    text-decoration: underline;
}

/* ========================================
   FLOATING CONTACT WIDGET
   ======================================== */

.floating-contact {
    position: fixed;
    right: 20px;
    bottom: 20px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.floating-btn {
    width: 65px;
    height: 65px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
    animation: pulse 2s infinite;
    border: 3px solid rgba(255, 255, 255, 0.3);
    text-decoration: none;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    }
    50% {
        transform: scale(1.08);
        box-shadow: 0 6px 30px rgba(0, 0, 0, 0.4);
    }
}

.floating-btn:hover {
    transform: scale(1.15);
    animation: none;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
}

.floating-btn.call-btn {
    background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
}

.floating-btn.call-btn:hover {
    background: linear-gradient(135deg, #1e40af 0%, #1e3a8a 100%);
}

.floating-btn.whatsapp-btn {
    background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
}

.floating-btn.whatsapp-btn:hover {
    background: linear-gradient(135deg, #128c7e 0%, #075e54 100%);
}

/* Icon styling */
.floating-btn svg {
    width: 32px;
    height: 32px;
    fill: currentColor;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-top-content {
        justify-content: center;
        text-align: center;
    }
    
    .contact-info {
        justify-content: center;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    nav ul {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        gap: 0;
        box-shadow: var(--shadow-lg);
        padding: 20px;
        max-height: calc(100vh - 180px);
        overflow-y: auto;
        overflow-x: hidden;
        z-index: 999;
        -webkit-overflow-scrolling: touch;
        scroll-behavior: smooth;
        align-items: flex-start;
    }
    
    /* Smooth scroll for mobile menu */
    nav ul::-webkit-scrollbar {
        width: 6px;
    }
    
    nav ul::-webkit-scrollbar-track {
        background: var(--light-color);
    }
    
    nav ul::-webkit-scrollbar-thumb {
        background: var(--primary-color);
        border-radius: 3px;
    }
    
    nav ul::-webkit-scrollbar-thumb:hover {
        background: var(--dark-color);
    }
    
    nav ul.active {
        display: flex;
    }
    
    nav ul li {
        width: 100%;
        text-align: left;
    }
    
    nav ul li a {
        padding: 15px;
        justify-content: flex-start;
        text-align: left;
        width: 100%;
        display: block;
    }
    
    /* Disable hover on mobile - Services dropdown */
    .dropdown:hover .dropdown-content {
        display: none;
    }
    
    .dropdown-content {
        position: static;
        box-shadow: none;
        margin-top: 0;
        padding-top: 0;
        display: none;
        background: var(--light-color);
        border-radius: 0;
    }
    
    .dropdown.active .dropdown-content {
        display: block;
    }
    
    .dropdown-content a {
        padding: 12px 20px 12px 30px;
        font-size: 0.95rem;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-content p {
        font-size: 1.1rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero-section {
        height: 500px;
    }
    
    .hero-content h1 {
        font-size: 1.6rem;
    }
    
    .section {
        padding: 10px 0;
    }
    
    .quick-contact-form {
        padding: 25px;
    }
    
    .floating-btn {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

.text-center {
    text-align: center;
}

.text-bold {
    font-weight: 700;
}

.text-primary {
    color: var(--primary-color);
}

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

.mb-30 {
    margin-bottom: 30px;
}

.mt-30 {
    margin-top: 30px;
}

.highlight-text {
    color: var(--primary-color);
    font-weight: 700;
}