/* ============================================
   DESIGN SYSTEM: Assets Surveyors Redesign
   ============================================
   
   Color Palette:
   - Deep Navy: #1a3d52 (trust, professionalism)
   - Gold Accent: #c9a961 (premium, precision)
   - Clean White: #ffffff
   - Light Grey: #f5f5f5
   - Dark Grey: #333333
   
   Typography:
   - Display: System fonts with careful weighting
   - Body: Clean, readable sans-serif
   - Weights: 400 (regular), 500 (medium), 600 (semibold), 700 (bold)
*/

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

:root {
    --primary: #1a3d52;
    --accent: #c9a961;
    --white: #ffffff;
    --light-grey: #f5f5f5;
    --grey: #777777;
    --dark-grey: #333333;
    --border-light: #e8e8e8;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    --font-mono: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.15);
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--dark-grey);
    background: var(--white);
    line-height: 1.6;
    font-size: 16px;
}

/* ============================================
   CONTAINER & LAYOUT
   ============================================ */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ============================================
   NAVIGATION
   ============================================ */

.navbar {
    position: sticky;
    top: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border-light);
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    cursor: pointer;
}

.logo-icon {
    color: var(--accent);
    font-size: 24px;
}

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

.nav-menu a {
    color: var(--dark-grey);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-menu a:hover {
    color: var(--accent);
}

.nav-cta {
    background: var(--primary);
    color: var(--white) !important;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 6px;
    transition: var(--transition);
}

.nav-cta:hover {
    background: #122b3d;
    color: var(--white) !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: 6px;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

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

.hero {
    background: linear-gradient(135deg, var(--primary) 0%, #2a5578 100%);
    color: var(--white);
    padding: var(--spacing-2xl) var(--spacing-lg);
    min-height: 600px;
    display: flex;
    align-items: center;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.hero-text h1 {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -1px;
}

.hero-text p {
    font-size: 18px;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.hero-stats {
    display: grid;
    gap: var(--spacing-lg);
}

.stat {
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 14px;
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    transition: var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
    text-align: center;
}

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

.btn-primary:hover {
    background: #b39452;
    border-color: #b39452;
}

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

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

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

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

section {
    padding: var(--spacing-2xl) var(--spacing-lg);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--primary);
}

.section-header p {
    font-size: 18px;
    color: var(--grey);
}

/* ============================================
   SERVICES SECTION
   ============================================ */

.services {
    background: var(--light-grey);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: var(--spacing-lg);
}

.service-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border-top: 4px solid transparent;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
    border-top-color: var(--accent);
}

.service-icon {
    font-size: 36px;
    margin-bottom: var(--spacing-md);
    display: block;
}

.service-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--primary);
}

.service-card p {
    color: var(--grey);
    line-height: 1.8;
}

/* ============================================
   ABOUT SECTION
   ============================================ */

.about {
    background: var(--white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.about-text h2 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--primary);
}

.about-text p {
    margin-bottom: var(--spacing-md);
    font-size: 16px;
    line-height: 1.8;
    color: var(--grey);
}

.about-locations {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.location {
    padding: var(--spacing-lg);
    background: var(--light-grey);
    border-radius: 8px;
    border-left: 4px solid var(--accent);
}

.location h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--primary);
}

.location p {
    font-size: 14px;
    color: var(--grey);
}

.about-highlights {
    display: grid;
    gap: var(--spacing-lg);
}

.highlight-item {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--light-grey);
    border-radius: 8px;
    align-items: center;
}

.highlight-number {
    font-size: 32px;
    font-weight: 700;
    color: var(--accent);
    min-width: 80px;
}

.highlight-text {
    font-size: 15px;
    color: var(--dark-grey);
    font-weight: 500;
}

/* ============================================
   WHY US SECTION
   ============================================ */

.why-us {
    background: linear-gradient(135deg, var(--primary) 0%, #2a5578 100%);
    color: var(--white);
}

.why-us .section-header h2,
.why-us .section-header p {
    color: var(--white);
}

.why-us .section-header p {
    opacity: 0.9;
}

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

.reason {
    text-align: center;
    padding: var(--spacing-lg);
}

.reason-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
    display: block;
}

.reason h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.reason p {
    font-size: 15px;
    opacity: 0.9;
    line-height: 1.8;
}

/* ============================================
   TESTIMONIALS SECTION
   ============================================ */

.testimonials {
    background: var(--light-grey);
}

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

.testimonial {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--accent);
}

.testimonial .stars {
    color: var(--accent);
    font-size: 16px;
    margin-bottom: var(--spacing-md);
    display: block;
    letter-spacing: 2px;
}

.testimonial p {
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
    color: var(--grey);
    font-style: italic;
}

.testimonial-author {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
}

/* ============================================
   CTA SECTION
   ============================================ */

.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, #2a5578 100%);
    color: var(--white);
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-lg);
}

.cta-section h2 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.cta-section p {
    font-size: 18px;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

/* ============================================
   CONTACT SECTION
   ============================================ */

.contact {
    background: var(--white);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
}

.contact-info h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--primary);
}

.contact-item {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--border-light);
}

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

.contact-item h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.contact-item p {
    font-size: 15px;
    color: var(--grey);
    line-height: 1.8;
}

/* ============================================
   FORM STYLES
   ============================================ */

.contact-form {
    background: var(--light-grey);
    padding: var(--spacing-xl);
    border-radius: 12px;
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-light);
    border-radius: 6px;
    font-family: var(--font-family);
    font-size: 15px;
    color: var(--dark-grey);
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(201, 169, 97, 0.1);
}

.form-group textarea {
    resize: vertical;
}

.form-note {
    font-size: 14px;
    margin-top: var(--spacing-md);
    text-align: center;
}

.form-note.success {
    color: #28a745;
}

.form-note.error {
    color: #dc3545;
}

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

.footer {
    background: var(--primary);
    color: var(--white);
    padding: var(--spacing-2xl) var(--spacing-lg);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto var(--spacing-xl);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.footer-section h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--accent);
}

.footer-section p {
    font-size: 14px;
    line-height: 1.8;
    opacity: 0.9;
}

.footer-section ul {
    list-style: none;
}

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

.footer-section a {
    color: var(--white);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
    opacity: 0.9;
}

.footer-section a:hover {
    opacity: 1;
    color: var(--accent);
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 14px;
    opacity: 0.8;
}

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

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-md);
        gap: var(--spacing-md);
    }

    .hero-content {
        grid-template-columns: 1fr;
    }

    .hero-text h1 {
        font-size: 36px;
    }

    .hero-text p {
        font-size: 16px;
    }

    .hero-stats {
        grid-template-columns: 1fr 1fr 1fr;
        gap: var(--spacing-md);
    }

    .stat {
        padding: var(--spacing-md);
    }

    .stat-number {
        font-size: 28px;
    }

    .section-header h2 {
        font-size: 32px;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .about-locations {
        grid-template-columns: 1fr;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-buttons .btn {
        width: 100%;
    }

    .cta-section h2 {
        font-size: 32px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .nav-container {
        padding: 0 var(--spacing-md);
    }

    .hero {
        padding: var(--spacing-xl) var(--spacing-md);
        min-height: auto;
    }

    .hero-text h1 {
        font-size: 28px;
    }

    .hero-text p {
        font-size: 15px;
    }

    section {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .section-header h2 {
        font-size: 26px;
    }

    .section-header p {
        font-size: 16px;
    }

    .hero-stats {
        grid-template-columns: 1fr;
    }

    .stat-number {
        font-size: 24px;
    }

    .cta-section h2 {
        font-size: 24px;
    }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

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

/* Focus visible for keyboard navigation */
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}