/* ===== CSS Variables ===== */
:root {
    /* Color Palette - Professional Blue/Teal for Water/Plumbing */
    --primary-color: #006d77;
    --primary-dark: #004d55;
    --primary-light: #008f9a;
    --secondary-color: #83c5be;
    --accent-color: #edf6f9;
    --text-dark: #1a1a2e;
    --text-medium: #4a4a5a;
    --text-light: #6b6b7b;
    --bg-light: #ffffff;
    --bg-off-white: #f8f9fa;
    --bg-gray: #e9ecef;
    --border-color: #dee2e6;
    --success-color: #28a745;
    --warning-color: #ffc107;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-medium);
    background-color: var(--bg-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-dark);
    line-height: 1.2;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }

p {
    margin-bottom: var(--spacing-md);
}

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

a:hover {
    color: var(--primary-dark);
}

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-align: center;
    white-space: nowrap;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

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

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

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

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-lg);
}

.btn-full {
    width: 100%;
}

/* ===== Header & Navigation ===== */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--bg-light);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

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

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
    gap: var(--spacing-lg);
}

.nav-brand {
    flex-shrink: 0;
}

.logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-link {
    color: var(--text-medium);
    font-weight: 500;
    padding: var(--spacing-sm) 0;
    position: relative;
    transition: color var(--transition-fast);
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width var(--transition-base);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-cta {
    background-color: var(--primary-color);
    color: white !important;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
}

.nav-cta:hover {
    background-color: var(--primary-dark);
}

.phone-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-dark);
    font-weight: 600;
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--accent-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.phone-cta:hover {
    background-color: var(--secondary-color);
    color: var(--text-dark);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-dark);
    position: relative;
    transition: all var(--transition-base);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background-color: var(--text-dark);
    transition: all var(--transition-base);
}

.hamburger::before { top: -8px; }
.hamburger::after { bottom: -8px; }

/* Mobile Navigation */
@media (max-width: 968px) {
    .nav-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--bg-light);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }

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

    .phone-cta {
        display: none;
    }
}

/* Mobile Sticky CTA */
.mobile-sticky-cta {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--primary-color);
    color: white;
    padding: var(--spacing-lg);
    text-align: center;
    font-weight: 600;
    font-size: var(--font-size-lg);
    z-index: 999;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
}

.mobile-sticky-cta:hover {
    background-color: var(--primary-dark);
    color: white;
}

@media (max-width: 768px) {
    .mobile-sticky-cta {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: var(--spacing-sm);
    }

    body {
        padding-bottom: 60px;
    }
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--secondary-color) 100%);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('https://images.unsplash.com/photo-1585704032915-c3400ca199e7?w=1200&h=800&fit=crop');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding: var(--spacing-2xl) 0;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: var(--spacing-lg);
    color: var(--text-dark);
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-medium);
    margin-bottom: var(--spacing-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-2xl);
}

.hero-trust {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
    justify-content: center;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-dark);
    font-weight: 500;
}

.trust-item svg {
    color: var(--primary-color);
}

/* ===== Section Styles ===== */
section {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Services Section ===== */
.services {
    background-color: var(--bg-off-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.service-card {
    background-color: var(--bg-light);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    position: relative;
}

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

.service-card.featured {
    border: 2px solid var(--primary-color);
}

.service-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background-color: var(--primary-color);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.service-icon {
    width: 60px;
    height: 60px;
    background-color: var(--accent-color);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    color: var(--primary-color);
}

.service-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
}

.service-desc {
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
}

.service-benefits {
    list-style: none;
    padding: 0;
}

.service-benefits li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    color: var(--text-medium);
}

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

/* ===== Why Choose Us ===== */
.why-us {
    background-color: var(--bg-light);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.why-card {
    padding: var(--spacing-xl);
    text-align: center;
}

.why-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto var(--spacing-lg);
    background-color: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
}

.why-title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
}

.why-text {
    color: var(--text-light);
}

/* ===== Cost Section ===== */
.cost-section {
    background-color: var(--accent-color);
}

.cost-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.cost-intro {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
}

.cost-grid {
    display: grid;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.cost-card {
    background-color: var(--bg-light);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.cost-card.featured-cost {
    border: 2px solid var(--primary-color);
    position: relative;
}

.cost-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background-color: var(--primary-color);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.cost-type {
    font-size: var(--font-size-base);
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
}

.cost-range {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.cost-detail {
    color: var(--text-medium);
    font-size: var(--font-size-sm);
}

.cost-note {
    color: var(--text-light);
    font-size: var(--font-size-sm);
    font-style: italic;
}

.cost-image img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

@media (max-width: 968px) {
    .cost-content {
        grid-template-columns: 1fr;
    }

    .cost-image {
        order: -1;
    }
}

/* ===== Process Section ===== */
.process {
    background-color: var(--bg-off-white);
}

.process-timeline {
    max-width: 800px;
    margin: 0 auto;
}

.process-step {
    display: flex;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
    position: relative;
}

.process-step:last-child {
    margin-bottom: 0;
}

.step-number {
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    font-weight: 700;
    flex-shrink: 0;
}

.step-content {
    flex: 1;
}

.step-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

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

@media (max-width: 600px) {
    .process-step {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}

/* ===== Service Area Section ===== */
.service-area {
    background-color: var(--primary-color);
    color: white;
}

.service-area-content {
    text-align: center;
}

.service-area .section-title {
    color: white;
}

.service-area-text {
    font-size: var(--font-size-lg);
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
    opacity: 0.9;
}

.service-areas-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
}

.area-tag {
    background-color: rgba(255, 255, 255, 0.2);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 500;
}

/* ===== FAQ Section ===== */
.faq {
    background-color: var(--bg-light);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--border-color);
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg) 0;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-dark);
    transition: color var(--transition-fast);
}

.faq-question:hover {
    color: var(--primary-color);
}

.faq-icon {
    color: var(--primary-color);
    transition: transform var(--transition-base);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
}

.faq-answer p {
    padding-bottom: var(--spacing-lg);
    color: var(--text-light);
    line-height: 1.7;
}

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

/* ===== CTA Section ===== */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
}

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

.cta-title {
    color: white;
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--spacing-md);
}

.cta-text {
    font-size: var(--font-size-lg);
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
}

.cta-buttons .btn-secondary {
    border-color: white;
    color: white;
}

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

/* ===== Contact Section ===== */
.contact {
    background-color: var(--bg-off-white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

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

.contact-intro {
    color: var(--text-light);
    margin-bottom: var(--spacing-2xl);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.contact-item {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background-color: var(--accent-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    flex-shrink: 0;
}

.contact-text strong {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-dark);
}

.contact-text p {
    color: var(--text-light);
    margin: 0;
}

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

.contact-form-wrapper {
    background-color: var(--bg-light);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-group label {
    font-weight: 600;
    color: var(--text-dark);
    font-size: var(--font-size-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    transition: border-color var(--transition-fast);
}

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

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

@media (max-width: 968px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== Footer ===== */
.footer {
    background-color: var(--text-dark);
    color: white;
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-title {
    color: white;
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
}

.footer-desc {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
}

.footer-heading {
    color: white;
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-lg);
    font-weight: 600;
}

.footer-nav {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-nav li {
    margin-bottom: var(--spacing-sm);
}

.footer-nav a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.footer-nav a:hover {
    color: white;
}

.footer-address {
    font-style: normal;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
}

.footer-address a {
    color: white;
}

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

.copyright {
    color: rgba(255, 255, 255, 0.5);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
}

.footer-service-area {
    color: rgba(255, 255, 255, 0.5);
    font-size: var(--font-size-sm);
}

@media (max-width: 968px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 600px) {
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

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

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

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}

/* ===== Focus States ===== */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* ===== Print Styles ===== */
@media print {
    .header,
    .mobile-sticky-cta,
    .contact-form-wrapper,
    .footer {
        display: none;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
    }

    section {
        padding: 1cm 0;
    }
}