/* 
 * styles.css
 * Premium Plumbing Website Design
 */

/* =========================================
   VARIABLES & DESIGN SYSTEM
========================================= */
:root {
    /* Color Palette - Dark Premium */
    --bg-primary: #0a0f1a;
    --bg-secondary: #121929;
    --bg-glass: rgba(18, 25, 41, 0.7);
    --border-glass: rgba(255, 255, 255, 0.1);

    /* Accents - Silver/Blue Premium */
    --accent-blue: #0088ff;
    --accent-silver: #e0e6ed;
    --accent-gradient: linear-gradient(135deg, #0088ff, #00d2ff);
    --accent-gradient-silver: linear-gradient(135deg, #e0e6ed, #9aa2oaf);

    /* Typography */
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --font-primary: 'Outfit', sans-serif;
    --font-heading: 'Playfair Display', serif;

    /* Transitions & Shadows */
    --transition-fast: 0.2s ease-in-out;
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --shadow-glow: 0 0 20px rgba(0, 136, 255, 0.3);
    --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.5);
    
    /* Layout */
    --section-padding: 100px 0;
    --container-width: 1200px;
}

/* =========================================
   RESET & BASE STYLES
========================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

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

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

p {
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
}

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

ul {
    list-style: none;
}

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

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

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

.text-gradient {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.bg-pattern {
    background-image: radial-gradient(rgba(255,255,255,0.05) 1px, transparent 1px);
    background-size: 20px 20px;
}

/* =========================================
   UTILITIES & COMPONENTS
========================================= */
/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: none;
    outline: none;
}

.btn-primary {
    background: var(--accent-gradient);
    color: #fff;
    box-shadow: 0 4px 15px rgba(0, 136, 255, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 136, 255, 0.6);
    color: #fff;
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid rgba(255,255,255,0.2);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.05);
    border-color: rgba(255,255,255,0.5);
    transform: translateY(-3px);
}

.btn-primary-outline {
    background: transparent;
    color: var(--accent-blue);
    border: 2px solid var(--accent-blue);
    padding: 0.75rem 1.75rem;
    border-radius: 50px;
    font-weight: 600;
}

.btn-primary-outline:hover {
    background: var(--accent-gradient);
    color: #fff;
    border-color: transparent;
    box-shadow: var(--shadow-glow);
}

.btn-block {
    width: 100%;
}

/* Glassmorphism Cards */
.glass-card {
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    box-shadow: var(--shadow-soft);
    position: relative;
    overflow: hidden;
}

/* Section Headers */
.section-subtitle {
    display: block;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--accent-blue);
    margin-bottom: 1rem;
    font-weight: 600;
}

.section-title {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.title-underline {
    height: 4px;
    width: 60px;
    background: var(--accent-gradient);
    margin: 0 auto 3rem;
    border-radius: 2px;
}

/* =========================================
   HEADER & NAVIGATION
========================================= */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition-smooth);
    padding: 1.5rem 0;
}

.header.scrolled {
    background: rgba(10, 15, 26, 0.9);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo img {
    height: 50px;
    transition: var(--transition-smooth);
}

.header.scrolled .logo img {
    height: 40px;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.logo-subtitle {
    font-size: 0.75rem;
    color: var(--accent-blue);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-link {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 1rem;
    position: relative;
}

.nav-link:not(.btn-primary-outline)::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    transition: var(--transition-fast);
}

.nav-link:not(.btn-primary-outline):hover::after,
.nav-link:not(.btn-primary-outline).active::after {
    width: 100%;
}

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

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    cursor: pointer;
}

/* =========================================
   HERO SECTION
========================================= */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transform: scale(1.05); /* Slight scale for potential parallax/animation */
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(10, 15, 26, 0.95) 0%, rgba(10, 15, 26, 0.7) 50%, rgba(10, 15, 26, 0.3) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-title {
    font-size: 4.5rem;
    margin-bottom: 1.5rem;
}

.hero-description {
    font-size: 1.25rem;
    max-width: 600px;
    margin-bottom: 2.5rem;
    color: var(--text-silver);
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 4rem;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-blue);
    line-height: 1.1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-divider {
    height: 50px;
    width: 1px;
    background: rgba(255,255,255,0.1);
}

/* =========================================
   SERVICES SECTION
========================================= */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.service-card {
    transition: var(--transition-smooth);
    padding: 0;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.6);
    border-color: rgba(0, 136, 255, 0.3);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, transparent 100%);
    z-index: 0;
    pointer-events: none;
}

.service-img-wrapper {
    position: relative;
    height: 250px;
    overflow: hidden;
}

.service-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
}

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

.service-img-placeholder {
    width: 100%;
    height: 100%;
    background-color: var(--bg-secondary);
}

.service-icon {
    position: absolute;
    bottom: -25px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: var(--accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #fff;
    box-shadow: var(--shadow-glow);
    z-index: 2;
}

.service-content {
    padding: 2.5rem 2rem 2rem;
    position: relative;
    z-index: 1;
}

.service-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 1rem;
}

.service-link i {
    transition: var(--transition-fast);
}

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

/* =========================================
   ABOUT SECTION
========================================= */
.about {
    background-color: var(--bg-secondary);
    position: relative;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-content {
    padding-right: 2rem;
}

.about-content .section-title {
    margin-bottom: 2rem;
}

.about-text {
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

.features-list {
    margin-bottom: 2rem;
}

.features-list li {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 1.125rem;
    font-weight: 500;
}

.about-visual {
    position: relative;
    height: 500px;
    border-radius: 20px;
    overflow: hidden;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-glass);
}

.about-visual-bg {
    width: 100%;
    height: 100%;
    opacity: 0.5;
}

.experience-badge {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 3rem;
    text-align: center;
    border-radius: 50%;
    width: 250px;
    height: 250px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 2;
}

.experience-badge .exp-number {
    font-family: var(--font-heading);
    font-size: 4rem;
    line-height: 1;
    color: var(--accent-blue);
    font-weight: 700;
}

.experience-badge .exp-text {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-top: 0.5rem;
}

/* =========================================
   CONTACT SECTION
========================================= */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    padding: 4rem;
    gap: 4rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.contact-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-details {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
}

.contact-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(0, 136, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-blue);
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contact-text h4 {
    margin-bottom: 0.25rem;
    font-size: 1.125rem;
    font-weight: 600;
}

.contact-text p, .contact-text a {
    color: var(--text-secondary);
    font-size: 1rem;
}

.contact-text a:hover {
    color: var(--accent-blue);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 1px;
    color: var(--text-secondary);
}

.form-control {
    width: 100%;
    padding: 1rem 1.5rem;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 10px;
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-blue);
    background: rgba(255,255,255,0.05);
    box-shadow: 0 0 0 4px rgba(0, 136, 255, 0.1);
}

/* =========================================
   FOOTER
========================================= */
.footer {
    background-color: var(--bg-primary);
    border-top: 1px solid rgba(255,255,255,0.05);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-logo {
    height: 60px;
    margin-bottom: 1.5rem;
}

.footer-links h4, .footer-social h4 {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icons a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.social-icons a:hover {
    background: var(--accent-blue);
    color: #fff;
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.05);
    color: var(--text-muted);
    font-size: 0.875rem;
}

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

.reveal-fade {
    opacity: 0;
    animation: fadeInUp 1s ease-out forwards;
}

.demo-delay-1 { animation-delay: 0.3s; }
.demo-delay-2 { animation-delay: 0.6s; }

/* Media Queries */
@media (max-width: 1024px) {
    .hero-title { font-size: 3.5rem; }
    .about-grid { gap: 2rem; }
    .contact-wrapper {
        grid-template-columns: 1fr;
        padding: 3rem;
    }
}

@media (max-width: 768px) {
    .nav-list {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--bg-secondary);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        border-bottom: 1px solid var(--border-glass);
    }

    .nav-list.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero-title { font-size: 2.5rem; }
    .hero-actions { flex-direction: column; width: 100%; }
    .btn { width: 100%; }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-wrapper {
        padding: 2rem 1.5rem;
    }
}