/* 
=======================================
Coolservix - Premium AC Service Website
CSS Stylesheet
=======================================
*/

/* --- CSS Variables & Tokens --- */
:root {
    /* Color Palette */
    --primary-color: #013567;    /* Deep Blue */
    --primary-light: #004d99;
    --primary-dark: #012242;
    --secondary-color: #00d2ff;  /* Cyan/Light Blue */
    --secondary-dark: #00a8cc;
    --accent-color: #00c853;     /* WhatsApp Green */
    
    --text-main: #333333;
    --text-muted: #666666;
    --text-light: #ffffff;
    --white: #ffffff;
    --black: #000000;
    
    --bg-main: #ffffff;
    --bg-light: #f8fafc;
    --bg-dark: #1e293b;
    --bg-gradient: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    
    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Effects */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 24px rgba(0,0,0,0.12);
    --transition-fast: all 0.2s ease-in-out;
    --transition-normal: all 0.3s ease-in-out;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-body);
    color: var(--text-main);
    background-color: var(--bg-main);
    line-height: 1.6;
    overflow-x: hidden;
}

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

p {
    margin-bottom: 1rem;
    color: var(--text-muted);
}

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

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-padding {
    padding: 80px 0;
}

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

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

.mt-4 {
    margin-top: 2rem;
}

/* --- Typography Utilities --- */
.section-subtitle {
    display: inline-block;
    color: var(--secondary-color);
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.section-description {
    max-width: 700px;
    margin: 0 auto 3rem;
    font-size: 1.1rem;
}

/* --- Buttons --- */
.btn-primary, .btn-secondary, .btn-white {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: var(--transition-normal);
    font-family: var(--font-heading);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
}

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

.btn-primary:hover {
    background-color: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: var(--white);
}

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

.btn-secondary:hover {
    background-color: var(--secondary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: var(--white);
}

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

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

/* --- Top Bar --- */
.top-bar {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 8px 0;
    font-size: 0.9rem;
}

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

.contact-info a {
    color: var(--white);
    margin-right: 20px;
    opacity: 0.9;
}

.contact-info a:hover {
    opacity: 1;
    color: var(--secondary-color);
}

.contact-info i {
    margin-right: 5px;
    color: var(--secondary-color);
}

.social-links a {
    color: var(--white);
    margin-left: 15px;
    opacity: 0.8;
}

.social-links a:hover {
    opacity: 1;
    color: var(--secondary-color);
}

/* --- Header / Navigation --- */
#header {
    background-color: var(--white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition-normal);
}

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

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo-img {
    height: 50px;
    width: auto;
    object-fit: contain;
}

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

.nav-links {
    display: flex;
    margin-right: 30px;
}

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    color: var(--text-main);
    font-weight: 600;
    position: relative;
    padding: 5px 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary-color);
    transition: var(--transition-normal);
}

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

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

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

/* --- Hero Section --- */
.hero {
    position: relative;
    height: 600px;
    min-height: 80vh;
    display: flex;
    align-items: center;
    color: var(--white);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(1,53,103,0.9) 0%, rgba(1,53,103,0.6) 50%, rgba(0,0,0,0.3) 100%);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    max-width: 800px;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 1rem;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: rgba(255,255,255,0.9);
    margin-bottom: 2.5rem;
    max-width: 600px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

/* --- Stats Strip --- */
.stats-section {
    background-color: var(--primary-light);
    color: var(--white);
    padding: 40px 0;
    margin-top: -30px;
    position: relative;
    z-index: 10;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    width: calc(100% - 40px);
    max-width: 1160px;
    margin-left: auto;
    margin-right: auto;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    text-align: center;
}

.stat-item {
    padding: 10px;
}

.stat-icon {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

.stat-number {
    font-size: 2.5rem;
    color: var(--white);
    margin-bottom: 5px;
}

.stat-text {
    color: rgba(255,255,255,0.8);
    margin: 0;
    font-weight: 500;
}

/* --- About Section --- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image-wrapper::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    border: 10px solid var(--white);
    border-radius: var(--radius-lg);
    z-index: 1;
    pointer-events: none;
}

.about-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.about-image-wrapper:hover .about-image {
    transform: scale(1.05);
}

.experience-badge {
    position: absolute;
    bottom: -20px;
    right: 30px;
    background: var(--primary-color);
    color: var(--white);
    padding: 30px;
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow-md);
    z-index: 2;
    border: 5px solid var(--white);
}

.exp-years {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
    color: var(--secondary-color);
}

.exp-text {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-top: 20px;
}

.about-features li {
    display: flex;
    align-items: center;
    font-weight: 500;
    color: var(--primary-color);
}

.about-features i {
    color: var(--secondary-color);
    margin-right: 10px;
    font-size: 1.2rem;
}

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

.service-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0,0,0,0.05);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--bg-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

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

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: var(--bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--primary-color);
    margin: 0 auto 20px;
    transition: var(--transition-normal);
}

.service-card:hover .service-icon {
    background: var(--primary-color);
    color: var(--white);
}

.service-title {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.service-link {
    display: inline-flex;
    align-items: center;
    font-weight: 600;
    color: var(--secondary-color);
    margin-top: 15px;
}

.service-link i {
    margin-left: 8px;
    transition: transform 0.3s ease;
}

.service-link:hover {
    color: var(--primary-color);
}

.service-link:hover i {
    transform: translateX(5px);
}

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

.testimonial-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    text-align: left;
    position: relative;
}

.quote-icon {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 3rem;
    color: rgba(0,210,255,0.1);
}

.testimonial-text {
    font-style: italic;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

.client-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.client-avatar {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.client-name {
    margin-bottom: 2px;
    font-size: 1.1rem;
}

.stars {
    color: #ffc107;
    font-size: 0.9rem;
}

/* --- Call to Action --- */
.cta-section {
    background: var(--bg-gradient);
    padding: 60px 0;
    color: var(--white);
}

.cta-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cta-content h2 {
    color: var(--white);
    margin-bottom: 10px;
}

.cta-content p {
    color: rgba(255,255,255,0.9);
    margin-bottom: 0;
}

/* --- Footer --- */
.footer {
    background-color: var(--bg-dark);
    color: var(--white);
    padding-top: 80px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-logo {
    max-width: 180px;
    margin-bottom: 20px;
}

.footer-about {
    color: var(--white);
}

.widget-title {
    color: var(--white);
    font-size: 1.3rem;
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 10px;
}

.widget-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: var(--secondary-color);
}

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

.footer-links a {
    color: var(--white);
    display: inline-flex;
    align-items: center;
}

.footer-links a i {
    margin-right: 8px;
    font-size: 0.8rem;
    color: var(--secondary-color);
}

.footer-links a:hover {
    color: var(--secondary-color);
    padding-left: 5px;
}

.contact-list li {
    display: flex;
    margin-bottom: 15px;
    align-items: flex-start;
}

.contact-list i {
    color: var(--secondary-color);
    margin-right: 15px;
    margin-top: 5px;
}

.contact-list a {
    color: var(--white);
}

.contact-list a:hover {
    color: var(--secondary-color);
}

.footer-socials a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    color: var(--white);
    border-radius: 50%;
    margin-right: 10px;
}

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

.footer-bottom {
    background-color: #151e2b;
    padding: 20px 0;
    font-size: 0.9rem;
    color: var(--white);
}

.footer-bottom p {
    margin: 0;
}

/* --- Floating Actions --- */
.floating-whatsapp {
    position: fixed;
    bottom: 30px;
    left: 30px;
    background-color: var(--accent-color);
    color: var(--white);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    transition: var(--transition-normal);
}

.floating-whatsapp:hover {
    background-color: #00b34a;
    transform: scale(1.1);
    color: var(--white);
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: var(--primary-color);
    color: var(--white);
    width: 50px;
    height: 50px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: var(--shadow-md);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--secondary-color);
    color: var(--white);
    transform: translateY(-3px);
}

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

.animate-up {
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

/* --- Responsive Design --- */
@media (max-width: 1024px) {
    .stats-section {
        width: 90%;
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    .about-grid {
        gap: 40px;
    }
    .services-grid, .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .top-bar {
        display: none; /* Hide top bar on mobile for cleaner look */
    }
    
    .mobile-toggle {
        display: block;
    }
    
    .main-nav {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-md);
        clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
        transition: clip-path 0.4s ease-in-out;
        z-index: 1001;
    }
    
    .main-nav.active {
        clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
    }
    
    .nav-links {
        flex-direction: column;
        width: 100%;
        margin: 0 0 20px 0;
    }
    
    .nav-links li {
        margin: 15px 0;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .experience-badge {
        right: 10px;
        padding: 20px;
    }
    
    .services-grid, .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-inner {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}