/* CSS Variables */
:root {
  --primary-dark: #1e3a8a;
  --primary-bright: #3b82f6;
  --text-dark: #1f2937;
  --text-gray: #6b7280;
  --bg-light: #f9fafb;
  --bg-white: #ffffff;
  --success: #10b981;
  --error: #ef4444;
  --border-gray: #e5e7eb;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--bg-white);
}

h1, h2, h3 {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-dark);
}

h1 {
  font-size: 32px;
  font-weight: 700;
}

h2 {
  font-size: 28px;
  margin-bottom: 1.5rem;
}

h3 {
  font-size: 20px;
  margin-bottom: 1rem;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
}

section {
  padding: 4rem 0;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 14px 28px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  border-radius: 8px;
  transition: all 0.3s ease;
  cursor: pointer;
  border: 2px solid transparent;
  text-align: center;
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

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

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

.btn-large {
  padding: 16px 40px;
  font-size: 18px;
}

/* HERO SECTION */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background-image: url('images/mast.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  color: var(--bg-white);
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1000px;
  padding: 0 20px;
}

.hero h1 {
  font-size: 48px;
  margin-bottom: 1rem;
  color: var(--bg-white);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-subheadline {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--bg-white);
}

.hero-supporting {
  font-size: 18px;
  margin-bottom: 2rem;
  color: var(--bg-white);
  opacity: 0.95;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* KEY STATISTICS BAR */
.stats {
  background-color: var(--bg-white);
  padding: 3rem 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

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

.stat-item {
  padding: 1.5rem;
}

.stat-number {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary-bright);
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 16px;
  color: var(--text-gray);
}

/* LOCATION SECTION */
.location {
  background-color: var(--bg-light);
}

.location h2 {
  text-align: center;
  margin-bottom: 2rem;
}

.map-container {
  margin: 2rem 0;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.map-container iframe {
  display: block;
}

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

.location-card {
  background: var(--bg-white);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.location-card h3 {
  color: var(--primary-dark);
  margin-bottom: 1rem;
}

.location-card ul {
  list-style: none;
}

.location-card li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-gray);
}

.location-card li:last-child {
  border-bottom: none;
}

/* SPECIFICATIONS SECTION */
.specifications {
  background-color: var(--bg-white);
}

.specifications h2 {
  text-align: center;
  margin-bottom: 3rem;
}

.specs-layout {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 3rem;
  margin-top: 2rem;
}

.specs-image img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.specs-content h3 {
  color: var(--primary-dark);
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.specs-content h3:first-child {
  margin-top: 0;
}

.specs-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 2rem;
  font-family: 'SF Mono', Monaco, 'Courier New', monospace;
  font-size: 14px;
  line-height: 1.8;
}

.specs-table tr {
  border-bottom: 1px solid var(--border-gray);
}

.specs-table td {
  padding: 0.75rem;
  vertical-align: top;
}

.specs-table td:first-child {
  width: 35%;
  color: var(--text-gray);
}

.advantages-list {
  list-style: none;
  margin-top: 1rem;
}

.advantages-list li {
  padding: 0.75rem 0;
  display: flex;
  align-items: flex-start;
}

.advantages-list .check {
  color: var(--success);
  font-size: 20px;
  margin-right: 0.75rem;
  flex-shrink: 0;
}

/* GALLERY SECTION */
.gallery {
  background-color: var(--bg-light);
}

.gallery h2 {
  text-align: center;
  margin-bottom: 3rem;
}

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

.gallery-item {
  background: var(--bg-white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.gallery-item img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  display: block;
}

.gallery-caption {
  padding: 1rem;
  font-size: 14px;
  color: var(--text-gray);
  text-align: center;
}

.gallery-note {
  text-align: center;
  font-style: italic;
  color: var(--text-gray);
  margin-top: 2rem;
}

/* MULTI-TENANT SECTION */
.multi-tenant {
  background-color: var(--bg-white);
}

.multi-tenant h2 {
  text-align: center;
}

.section-subheading {
  text-align: center;
  font-size: 18px;
  color: var(--text-gray);
  margin-bottom: 3rem;
}

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

.benefit-card {
  background: var(--bg-light);
  padding: 2rem;
  border-radius: 12px;
  border: 1px solid var(--border-gray);
}

.benefit-card h3 {
  color: var(--primary-dark);
  margin-bottom: 1rem;
}

.benefit-card ul {
  list-style: none;
}

.benefit-card li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
}

.benefit-card li:before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--primary-bright);
  font-weight: bold;
}

.callout-box {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-bright));
  color: var(--bg-white);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(30, 58, 138, 0.2);
}

.callout-box p {
  font-size: 18px;
  line-height: 1.7;
  margin: 0;
}

/* MARKET SECTION */
.market {
  background-color: var(--bg-light);
}

.market h2 {
  text-align: center;
  margin-bottom: 3rem;
}

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

.timeline-item {
  background: var(--bg-white);
  padding: 2rem;
  border-radius: 12px;
  border-left: 4px solid var(--primary-bright);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.timeline-year {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary-bright);
  margin-bottom: 0.5rem;
}

.timeline-content h3 {
  font-size: 18px;
  color: var(--primary-dark);
  margin-bottom: 0.5rem;
}

.timeline-content p {
  color: var(--text-gray);
}

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

.advantage-card {
  background: var(--bg-white);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  text-align: center;
}

.advantage-icon {
  font-size: 48px;
  margin-bottom: 1rem;
}

.advantage-card h3 {
  color: var(--primary-dark);
  margin-bottom: 1rem;
}

.advantage-card p {
  color: var(--text-gray);
}

/* TENANT PROFILE SECTION */
.tenant-profile {
  background-color: var(--bg-white);
}

.tenant-profile h2 {
  text-align: center;
}

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

.tenant-category {
  background: var(--bg-light);
  padding: 2rem;
  border-radius: 12px;
}

.tenant-category h3 {
  color: var(--primary-dark);
  margin-bottom: 1rem;
  text-align: center;
}

.tenant-category ul {
  list-style: none;
}

.tenant-category li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-gray);
}

.tenant-category li:last-child {
  border-bottom: none;
}

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

.requirements-col {
  background: var(--bg-light);
  padding: 2rem;
  border-radius: 12px;
}

.requirements-col h3 {
  color: var(--primary-dark);
  margin-bottom: 1rem;
}

.requirements-col ul {
  list-style: none;
}

.requirements-col li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
}

.requirements-col li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: bold;
}

/* CONTACT FORM SECTION */
.contact {
  background-color: var(--bg-light);
}

.contact h2 {
  text-align: center;
}

.contact-form {
  max-width: 800px;
  margin: 0 auto;
  background: var(--bg-white);
  padding: 3rem;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.form-field {
  margin-bottom: 1.5rem;
}

.form-field label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text-dark);
}

.required {
  color: var(--error);
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 12px;
  border: 2px solid var(--border-gray);
  border-radius: 6px;
  font-size: 16px;
  font-family: inherit;
  transition: border-color 0.3s ease;
}

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

.form-field.error input,
.form-field.error select,
.form-field.error textarea {
  border-color: var(--error);
}

.form-field.success input,
.form-field.success select,
.form-field.success textarea {
  border-color: var(--success);
}

.radio-group {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.radio-label {
  display: flex;
  align-items: center;
  cursor: pointer;
}

.radio-label input[type="radio"] {
  width: auto;
  margin-right: 0.5rem;
}

.form-disclaimer {
  font-size: 14px;
  color: var(--text-gray);
  text-align: center;
  margin-top: 1.5rem;
}

.form-message {
  padding: 1rem;
  border-radius: 8px;
  margin-bottom: 1rem;
  font-weight: 600;
}

.form-message.success {
  background: #d1fae5;
  color: #065f46;
  border: 1px solid var(--success);
}

.form-message.error {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid var(--error);
}

/* FOOTER */
.footer {
  background-color: var(--primary-dark);
  color: var(--bg-white);
  padding: 3rem 0 1rem;
}

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

.footer-col h3 {
  color: var(--bg-white);
  margin-bottom: 1rem;
  font-size: 18px;
}

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

.footer-col li {
  padding: 0.25rem 0;
  font-size: 14px;
  opacity: 0.9;
}

.footer-col p {
  font-size: 14px;
  margin-bottom: 0.5rem;
}

.footer-copyright {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 14px;
  opacity: 0.8;
}

.footer-copyright p {
  margin: 0.25rem 0;
}

/* BACK TO TOP BUTTON */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background-color: var(--primary-bright);
  color: var(--bg-white);
  border: none;
  border-radius: 50%;
  font-size: 24px;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
  transition: all 0.3s ease;
  z-index: 1000;
}

.back-to-top:hover {
  background-color: var(--primary-dark);
  transform: translateY(-3px);
}

/* RESPONSIVE DESIGN - TABLET (768px - 1023px) */
@media (max-width: 1023px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .location-cards {
    grid-template-columns: 1fr;
  }

  .specs-layout {
    grid-template-columns: 1fr;
  }

  .benefit-cards,
  .advantage-cards,
  .tenant-categories {
    grid-template-columns: 1fr;
  }

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

  .requirements-section {
    grid-template-columns: 1fr;
  }

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

/* RESPONSIVE DESIGN - MOBILE (320px - 767px) */
@media (max-width: 767px) {
  h1 {
    font-size: 28px;
  }

  h2 {
    font-size: 24px;
  }

  h3 {
    font-size: 18px;
  }

  section {
    padding: 3rem 0;
  }

  .hero {
    min-height: 500px;
    background-attachment: scroll;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero-subheadline {
    font-size: 16px;
  }

  .hero-supporting {
    font-size: 16px;
  }

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

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

  .stats-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

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

  .map-container iframe {
    height: 300px;
  }

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

  .gallery-item img {
    height: 250px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .contact-form {
    padding: 2rem 1.5rem;
  }

  .radio-group {
    flex-direction: column;
    gap: 0.75rem;
  }

  .back-to-top {
    width: 45px;
    height: 45px;
    bottom: 20px;
    right: 20px;
    font-size: 20px;
  }

  .timeline-year {
    font-size: 20px;
  }

  .timeline-content h3 {
    font-size: 16px;
  }

  .advantage-icon {
    font-size: 36px;
  }

  .callout-box p {
    font-size: 16px;
  }
}

/* DESKTOP LARGE (1440px+) */
@media (min-width: 1440px) {
  .hero h1 {
    font-size: 56px;
  }

  .hero-subheadline {
    font-size: 22px;
  }

  .hero-supporting {
    font-size: 20px;
  }
}