/* ===================================
   CSS Variables & Reset
   =================================== */
:root {
    /* Pittsburgh-inspired Color Palette */
    --primary-black: #000000;
    --primary-gold: #FFB81C;
    --gold-dark: #E6A517;
    --gold-light: #FFC845;
    
    /* Neutral Colors */
    --white: #FFFFFF;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* Accent Colors */
    --blue: #3B82F6;
    --blue-dark: #2563EB;
    --green: #10B981;
    --red: #EF4444;
    
    /* Spacing */
    --container-width: 1200px;
    --section-padding: 120px;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

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

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

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    overflow-x: hidden;
}

/* ===================================
   Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--gray-900);
}

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

/* ===================================
   Utility Classes
   =================================== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-gold) 0%, var(--gold-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===================================
   Navigation
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    transition: all var(--transition-base);
}

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

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.logo-text {
    font-size: 24px;
    font-weight: 800;
    color: var(--primary-black);
    letter-spacing: -0.5px;
}

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

.logo-tagline {
    font-size: 11px;
    font-weight: 500;
    color: var(--gray-500);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--gray-600);
    transition: color var(--transition-base);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gold);
    transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--gray-900);
}

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

.nav-cta {
    padding: 10px 24px;
    background: var(--primary-gold);
    color: var(--primary-black);
    font-weight: 600;
    border-radius: 8px;
    transition: all var(--transition-base);
}

.nav-cta:hover {
    background: var(--gold-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 8px;
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--gray-900);
    transition: all var(--transition-base);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 184, 28, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 196, 69, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 90%, rgba(255, 184, 28, 0.08) 0%, transparent 50%),
        linear-gradient(180deg, var(--primary-black) 0%, #0f0f0f 100%);
}

.hero-background::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(255, 184, 28, 0.03) 2px, rgba(255, 184, 28, 0.03) 4px);
    animation: scanline 8s linear infinite;
}

.pittsburgh-skyline {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: 200px;
    opacity: 0.6;
    pointer-events: none;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(10, 10, 10, 0.5) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 100px;
    color: var(--white);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 32px;
    animation: fadeInUp 0.6s ease;
}

.badge-icon {
    width: 20px;
    height: 20px;
    stroke: var(--primary-gold);
}

.hero-title {
    font-size: clamp(40px, 6vw, 72px);
    font-weight: 800;
    color: var(--white);
    line-height: 1.1;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease 0.1s both;
}

.hero-subtitle {
    font-size: clamp(18px, 2vw, 22px);
    color: var(--gray-300);
    line-height: 1.6;
    margin-bottom: 48px;
    max-width: 700px;
    animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 80px;
    animation: fadeInUp 0.6s ease 0.3s both;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 32px;
    padding-top: 48px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    animation: fadeInUp 0.6s ease 0.4s both;
}

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

.stat-number {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary-gold);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--gray-400);
    font-weight: 500;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--gray-400);
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    animation: bounce 2s infinite;
}

.scroll-indicator svg {
    width: 20px;
    height: 20px;
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    text-align: center;
}

.btn-icon {
    width: 20px;
    height: 20px;
}

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

.btn-primary:hover {
    background: var(--gold-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(255, 184, 28, 0.3);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--gray-700);
    border: 2px solid var(--gray-300);
}

.btn-outline:hover {
    border-color: var(--primary-gold);
    color: var(--primary-black);
    background: var(--gray-50);
}

/* ===================================
   Section Headers
   =================================== */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 80px;
}

.section-badge {
    display: inline-block;
    padding: 8px 16px;
    background: var(--gray-100);
    color: var(--primary-gold);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 6px;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--gray-600);
    line-height: 1.7;
}

/* ===================================
   Services Section
   =================================== */
.services {
    padding: var(--section-padding) 0;
    background: var(--gray-50);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 32px;
    margin-bottom: 80px;
}

.service-card {
    background: var(--white);
    padding: 40px;
    border-radius: 16px;
    border: 1px solid var(--gray-200);
    transition: all var(--transition-base);
    position: relative;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-gold);
}

.service-card.featured {
    border: 2px solid var(--primary-gold);
    background: linear-gradient(135deg, var(--white) 0%, var(--gray-50) 100%);
}

.featured-badge {
    position: absolute;
    top: -12px;
    right: 40px;
    padding: 6px 16px;
    background: var(--primary-gold);
    color: var(--primary-black);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: 100px;
}

.service-icon {
    width: 56px;
    height: 56px;
    padding: 14px;
    background: var(--gray-100);
    border-radius: 12px;
    margin-bottom: 24px;
    transition: all var(--transition-base);
}

.service-card:hover .service-icon {
    background: var(--primary-gold);
    transform: scale(1.1);
}

.service-icon svg {
    width: 100%;
    height: 100%;
    stroke: var(--gray-700);
}

.service-card:hover .service-icon svg {
    stroke: var(--primary-black);
}

.service-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}

.service-description {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: 24px;
}

.service-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.service-features li {
    font-size: 14px;
    color: var(--gray-700);
    padding-left: 24px;
    position: relative;
}

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

.services-cta {
    text-align: center;
    padding: 60px 40px;
    background: linear-gradient(135deg, var(--primary-black) 0%, var(--gray-900) 100%);
    border-radius: 16px;
    color: var(--white);
}

.services-cta h3 {
    font-size: 32px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 16px;
}

.services-cta p {
    font-size: 18px;
    color: var(--gray-300);
    margin-bottom: 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ===================================
   About Section
   =================================== */
.about {
    padding: var(--section-padding) 0;
    background: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-text {
    font-size: 17px;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 24px;
}

.about-values {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin: 48px 0;
}

.value-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    padding: 28px 32px;
    background: var(--gray-50);
    border-radius: 16px;
    transition: all var(--transition-base);
    border: 1px solid var(--gray-100);
}

.value-item:hover {
    background: var(--white);
    border-color: var(--primary-gold);
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.value-item h4 {
    font-size: 19px;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.value-item p {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.6;
}

.about-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.about-image {
    position: relative;
}

.image-card {
    position: relative;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-200) 100%);
    border-radius: 16px;
    padding: 48px;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-decoration {
    position: absolute;
    inset: 20px;
    border: 2px solid var(--primary-gold);
    border-radius: 12px;
    opacity: 0.3;
}

.expertise-badges {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    position: relative;
    z-index: 1;
}

.expertise-badges .badge {
    background: var(--white);
    padding: 16px 24px;
    border-radius: 8px;
    text-align: center;
    font-weight: 700;
    color: var(--gray-900);
    box-shadow: var(--shadow-md);
}

.pittsburgh-pride {
    margin-top: 48px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    padding: 32px;
    background: linear-gradient(135deg, rgba(255, 184, 28, 0.05) 0%, rgba(255, 184, 28, 0.02) 100%);
    border-radius: 16px;
    border: 1px solid rgba(255, 184, 28, 0.1);
}

.three-bridges {
    position: relative;
}

.bridge-icon {
    width: 150px;
    height: 60px;
    stroke: var(--primary-gold);
    filter: drop-shadow(0 2px 8px rgba(255, 184, 28, 0.3));
}

.pride-text {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.pride-text strong {
    font-size: 18px;
    font-weight: 800;
    color: var(--gray-900);
    letter-spacing: 0.5px;
}

.pride-text span {
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-600);
    font-style: italic;
}

/* ===================================
   Contact Section
   =================================== */
.contact {
    padding: var(--section-padding) 0;
    background: var(--gray-50);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 80px;
}

.contact-description {
    font-size: 17px;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 48px;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 32px;
    margin-bottom: 48px;
}

.contact-method {
    display: flex;
    gap: 20px;
}

.method-icon {
    width: 48px;
    height: 48px;
    padding: 12px;
    background: var(--primary-gold);
    border-radius: 10px;
    flex-shrink: 0;
}

.method-icon svg {
    width: 100%;
    height: 100%;
    stroke: var(--primary-black);
}

.contact-method h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 4px;
}

.contact-method a {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-black);
    margin-bottom: 4px;
    display: block;
}

.contact-method a:hover {
    color: var(--gold-dark);
}

.contact-method p {
    font-size: 14px;
    color: var(--gray-500);
}

.response-time {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--white);
    border-radius: 8px;
    border: 1px solid var(--gray-200);
    font-size: 14px;
    color: var(--gray-600);
}

.status-indicator {
    width: 10px;
    height: 10px;
    background: var(--green);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

/* ===================================
   Contact Form
   =================================== */
.contact-form-container {
    background: var(--white);
    padding: 48px;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

.contact-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-700);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 16px;
    font-size: 15px;
    font-family: inherit;
    color: var(--gray-900);
    background: var(--white);
    border: 2px solid var(--gray-300);
    border-radius: 8px;
    transition: all var(--transition-base);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-gold);
    box-shadow: 0 0 0 3px rgba(255, 184, 28, 0.1);
}

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

.btn-submit {
    grid-column: 1 / -1;
    position: relative;
}

.btn-loading {
    display: none;
}

.btn-submit.loading .btn-text {
    display: none;
}

.btn-submit.loading .btn-loading {
    display: inline;
}

.form-message {
    grid-column: 1 / -1;
    display: none;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
}

.form-message.show {
    display: flex;
}

.form-message svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.form-message.success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--green);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.form-message.error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--red);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: 80px 0 32px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 80px;
    margin-bottom: 48px;
}

.footer-brand {
    max-width: 400px;
}

.footer-logo {
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin-bottom: 24px;
}

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

.footer-description {
    font-size: 15px;
    line-height: 1.7;
    color: var(--gray-400);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px;
}

.footer-column {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-column h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
}

.footer-column a,
.footer-column span {
    font-size: 14px;
    color: var(--gray-400);
    transition: color var(--transition-base);
}

.footer-column a:hover {
    color: var(--primary-gold);
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--gray-800);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-bottom p {
    font-size: 14px;
    color: var(--gray-500);
}

.footer-badges {
    display: flex;
    gap: 12px;
    font-size: 13px;
    color: var(--gray-500);
}

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

@keyframes bounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    50% {
        transform: translateX(-50%) translateY(-10px);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1024px) {
    :root {
        --section-padding: 80px;
    }
    
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .services-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 32px 24px;
        gap: 24px;
        box-shadow: var(--shadow-lg);
        transform: translateX(-100%);
        transition: transform var(--transition-base);
    }
    
    .nav-menu.active {
        transform: translateX(0);
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        grid-template-columns: 1fr;
    }
    
    .contact-form-container {
        padding: 32px 24px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        grid-template-columns: 1fr;
    }
    
    .stat-item {
        text-align: left;
    }
    
    .expertise-badges {
        grid-template-columns: 1fr;
    }
}