@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  /* Color Palette */
  --bg-primary: #0B0D10;
  --bg-secondary: #141821;
  --bg-card: rgba(255, 255, 255, 0.03);
  --border-card: rgba(255, 255, 255, 0.05);
  
  --accent-primary: #1D4ED8;
  --accent-primary-hover: #1e40af;
  --accent-secondary: #64748B;
  
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  
  /* Typography */
  --font-main: 'Inter', sans-serif;
  
  /* Layout & Spacing */
  --max-width: 1300px;
  --spacing-desktop: 100px;
  --spacing-tablet: 70px;
  --spacing-mobile: 50px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

ul {
  list-style: none;
}

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

/* Layout System */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: var(--spacing-desktop) 0;
}

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

/* Typography Classes */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }

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

.text-center { text-align: center; }
.section-header {
  max-width: 800px;
  margin: 0 auto 4rem auto;
  text-align: center;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  border-radius: 4px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
}

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

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

.btn-outline {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--text-primary);
}

.btn-outline:hover {
  background-color: var(--text-primary);
  color: var(--bg-primary);
  transform: translateY(-2px);
}

/* Header & Navigation */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(11, 13, 16, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-card);
  z-index: 1000;
  padding: 1rem 0;
  transition: all var(--transition-normal);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

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

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

.nav-links a {
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--accent-primary);
  transition: width var(--transition-fast);
}

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

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

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

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('assets/images/corporate-building-security-hero.jpg');
  background-size: cover;
  background-position: center;
  z-index: -2;
  animation: slowZoom 20s infinite alternate linear;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to right, rgba(11, 13, 16, 0.95) 0%, rgba(11, 13, 16, 0.7) 100%);
  z-index: -1;
}

.hero-content {
  max-width: 800px;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 2.5rem;
  max-width: 600px;
}

.hero-btns {
  display: flex;
  gap: 1rem;
}

@keyframes slowZoom {
  from { transform: scale(1); }
  to { transform: scale(1.1); }
}

/* Cards & Grids */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 8px;
  padding: 2.5rem 2rem;
  transition: transform var(--transition-normal), border-color var(--transition-normal);
}

.card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 255, 255, 0.15);
}

.card-icon {
  font-size: 2.5rem;
  color: var(--accent-primary);
  margin-bottom: 1.5rem;
}

.card h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.card p {
  margin-bottom: 0;
  font-size: 0.95rem;
}

/* Forms */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-primary);
}

.form-control {
  width: 100%;
  padding: 1rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 4px;
  color: var(--text-primary);
  font-family: var(--font-main);
  transition: border-color var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-primary);
}

textarea.form-control {
  min-height: 150px;
  resize: vertical;
}

/* Footer */
.site-footer {
  background-color: #050608;
  padding: 4rem 0 2rem 0;
  border-top: 1px solid var(--border-card);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-col h4 {
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--text-secondary);
}

.footer-links a:hover {
  color: var(--accent-primary);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border-card);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Inner Page Header */
.page-header {
  padding-top: 150px;
  padding-bottom: 80px;
  background-color: var(--bg-secondary);
  text-align: center;
  border-bottom: 1px solid var(--border-card);
}

/* Contact Section Grid */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
}

.contact-info .info-item {
  margin-bottom: 2rem;
}

.info-item h4 {
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.info-item p {
  margin-bottom: 0;
}

/* Content Blocks */
.content-block {
  max-width: 800px;
  margin: 0 auto;
}

.content-block h2 {
  margin-top: 3rem;
  margin-bottom: 1rem;
}

.content-block ul {
  list-style: disc;
  margin-left: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
}

.content-block li {
  margin-bottom: 0.5rem;
}

/* Media Queries */
@media (max-width: 1024px) {
  section { padding: var(--spacing-tablet) 0; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  section { padding: var(--spacing-mobile) 0; }
  .grid-3, .grid-2, .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  
  .mobile-menu-btn { display: block; }
  
  .nav-links {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background-color: var(--bg-primary);
    flex-direction: column;
    justify-content: center;
    transition: left var(--transition-normal);
  }
  
  .nav-links.active { left: 0; }
  .nav-links .btn { margin-top: 1rem; }
  
  .hero-btns {
    flex-direction: column;
  }
}

/* GSAP Utility Classes */
.gsap-fade-up { opacity: 0; visibility: hidden; }
.gsap-stagger { opacity: 0; visibility: hidden; }