/* 
   Project: London Clean Pro - Office Cleaning Services
   Description: Custom CSS for single-page landing site
   Author: Antigravity
*/

/* --------------------------------------------------
   1. Variables & Global Reset
-------------------------------------------------- */
:root {
    --primary-color: #0a192f;   /* Deep Navy */
    --secondary-color: #112240; /* Lighter Navy for cards/sections */
    --accent-color: #d4af37;    /* Gold */
    --text-color: #333333;
    --text-light: #ffffff;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;

    --transition: all 0.3s ease;
    --shadow: 0 5px 15px rgba(0,0,0,0.1);
    --shadow-hover: 0 8px 25px rgba(0,0,0,0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--bg-white);
}

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

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

ul {
    list-style: none;
}

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

/* --------------------------------------------------
   2. Utility Classes
-------------------------------------------------- */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.section {
    padding: 80px 0;
}

.text-center { text-align: center; }
.bg-light { background-color: var(--bg-light); }
.bg-dark { background-color: var(--primary-color); }
.text-white { color: var(--text-light); }
.text-white-opacity { color: rgba(255, 255, 255, 0.8); }

.section-title {
    font-size: 2.2rem;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.title-underline {
    width: 60px;
    height: 4px;
    background-color: var(--accent-color);
    margin-bottom: 30px;
}

.center-underline {
    margin: 0 auto 40px auto;
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 30px;
    font-family: var(--font-heading);
    font-weight: 600;
    text-transform: uppercase;
    border-radius: 4px;
    cursor: pointer;
    letter-spacing: 0.5px;
}

.btn-primary {
    background-color: var(--accent-color);
    color: var(--primary-color);
    border: 2px solid var(--accent-color);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--accent-color);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-light);
    border: 2px solid var(--text-light);
    margin-left: 15px;
}

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

.btn-primary-outline {
    background-color: transparent;
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
    padding: 10px 20px;
}

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

.btn-large {
    font-size: 1.1rem;
    padding: 16px 40px;
}

/* --------------------------------------------------
   3. Header & Navigation
-------------------------------------------------- */
.header {
    background-color: var(--primary-color);
    color: var(--text-light);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

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

.logo a {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-light);
}

.logo span {
    color: var(--accent-color);
}

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

.nav-list li a {
    font-size: 0.95rem;
    font-weight: 500;
    color: #e6f1ff;
    position: relative;
}

.nav-list li a:not(.btn):hover {
    color: var(--accent-color);
}

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

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-light);
}

/* --------------------------------------------------
   4. Hero Section
-------------------------------------------------- */
.hero {
    position: relative;
    height: 85vh;
    min-height: 500px;
    background: linear-gradient(rgba(10, 25, 47, 0.85), rgba(10, 25, 47, 0.7)), url('https://images.unsplash.com/photo-1497366216548-37526070297c?auto=format&fit=crop&q=80');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    text-align: center;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero h1 {
    font-size: 3.5rem;
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #cbd5e1;
    margin-bottom: 40px;
    font-weight: 400;
}

.hero-buttons {
    display: flex;
    justify-content: center;
}

/* --------------------------------------------------
   5. About Section
-------------------------------------------------- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-text p {
    margin-bottom: 20px;
    font-size: 1.05rem;
    color: #555;
}

.stats-grid {
    display: flex;
    gap: 40px;
    margin-top: 30px;
}

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

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

.stat-label {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--primary-color);
}

.about-image-placeholder {
    width: 100%;
    height: 400px;
    background-color: #ddd;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    font-weight: 600;
    background-image: url('https://images.unsplash.com/photo-1497215728101-856f4ea42174?auto=format&fit=crop&q=80');
    background-size: cover;
    background-position: center;
    position: relative;
}

.about-image-placeholder::after {
    content: '';
    position: absolute;
    top: 20px;
    left: 20px;
    right: -20px;
    bottom: -20px;
    border: 4px solid var(--accent-color);
    z-index: -1;
}

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

.service-card {
    background-color: var(--bg-white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-bottom: 4px solid transparent;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-bottom: 4px solid var(--accent-color);
}

.icon-box {
    font-size: 3rem;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.35rem;
    margin-bottom: 15px;
}

.service-card p {
    font-size: 0.95rem;
    color: #666;
    margin-bottom: 20px;
}

.service-benefits {
    border-top: 1px solid #eee;
    padding-top: 15px;
}

.service-benefits li {
    font-size: 0.9rem;
    color: #444;
    margin-bottom: 8px;
    position: relative;
    padding-left: 20px;
}

.service-benefits li::before {
    content: '•';
    color: var(--accent-color);
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* --------------------------------------------------
   7. Why Choose Us Section
-------------------------------------------------- */
.why-us-content {
    max-width: 800px;
    margin: 0 auto;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

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

.check-icon {
    font-size: 1.5rem;
    color: var(--accent-color);
    font-weight: 900;
    line-height: 1;
    margin-top: 2px;
}

.feature-text strong {
    display: block;
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.feature-text p {
    color: #666;
    font-size: 0.95rem;
}

/* --------------------------------------------------
   8. Coverage Section
-------------------------------------------------- */
.coverage-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
}

.tag {
    /* background-color: rgba(255, 255, 255, 0.1); */
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    padding: 10px 20px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

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

.testimonial-card {
    background-color: var(--bg-light);
    padding: 30px;
    border-radius: 8px;
    position: relative;
}

.testimonial-card::before {
    content: '"';
    font-family: serif;
    font-size: 4rem;
    color: #e0e0e0;
    position: absolute;
    top: -10px;
    left: 20px;
    z-index: 0;
}

.quote {
    font-style: italic;
    color: #444;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

.author strong {
    display: block;
    color: var(--primary-color);
    font-size: 1rem;
}

.author span {
    font-size: 0.85rem;
    color: #888;
}

/* --------------------------------------------------
   10. CTA Section
-------------------------------------------------- */
.cta-section {
    background: linear-gradient(rgba(10, 25, 47, 0.9), rgba(10, 25, 47, 0.9)), url('https://images.unsplash.com/photo-1497366811353-6870744d04b2?auto=format&fit=crop&q=80');
    background-size: cover;
    background-attachment: fixed;
    padding: 100px 0;
    color: var(--text-light);
}

.cta-section h2 {
    color: var(--text-light);
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.cta-section p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: #cbd5e1;
}

/* --------------------------------------------------
   11. Footer
-------------------------------------------------- */
.footer {
    background-color: var(--primary-color);
    color: #8892b0;
    padding: 60px 0 0;
    font-size: 0.9rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-col h3 {
    color: var(--text-light);
    margin-bottom: 15px;
}

.footer-col h4 {
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 20px;
}

.footer-col ul li {
    margin-bottom: 10px;
}

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

.contact-info li {
    display: flex;
    gap: 10px;
}

.footer-bottom {
    padding: 20px 0;
    background-color: #020c1b;
}

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

.legal-links {
    display: flex;
    gap: 20px;
}

/* --------------------------------------------------
   12. Responsive Media Queries
-------------------------------------------------- */
@media (max-width: 900px) {
    .hero h1 { font-size: 2.8rem; }
    .about-grid { grid-template-columns: 1fr; }
    .about-image-placeholder { margin-top: 30px; height: 300px; }
}

@media (max-width: 768px) {
    .nav-list { display: none; } /* Simplified mobile menu hiding for this static demo */
    .mobile-menu-toggle { display: flex; }
    
    .hero { height: auto; padding: 100px 0; }
    .hero h1 { font-size: 2.2rem; }
    .hero-subtitle { font-size: 1rem; }
    .hero-buttons { flex-direction: column; gap: 15px; }
    .btn-secondary { margin-left: 0; }
    
    .footer-bottom .container {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
}