/* eCelium GIS Website - main stylesheet */

/* ============================================================
   CSS Custom Properties (Design Tokens)
   ============================================================ */
:root {
  --color-bg: #c0e3ff;          /* light blue-grey background */
  --color-bg-alt: #f0f4f8;      /* slightly lighter alt background */
  --color-navy: #1a2a4a;        /* dark navy text */
  --color-blue: #253c69;
  --color-teal: #0f68b8;        /* teal accent */
  --color-teal-dark: #2676bb;   /* darker teal for hover */
  --color-accent: #C82909;      /* warm accent (map pin) */
  --color-white: #ffffff;
  --color-grey-light: #d0dce8;
  --color-grey-mid: #8a9bb0;
  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --navbar-height: 64px;
  --section-padding: 4rem 2rem;
  --border-radius: 8px;
  --shadow: 0 2px 12px rgba(26, 42, 74, 0.1);
}

/* ============================================================
   Global Reset & Base Styles
   ============================================================ */
html, body {
  overflow-x: hidden;
  max-width: 100%;
}

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

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

/* ============================================================
   NavBar
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  background: var(--color-white);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  z-index: 1000;
}

.navbar-logo {
  height: 120px;
  width: auto;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  color: var(--color-navy);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--color-teal);
}

.hamburger-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-navy);
}

/* ============================================================
   HeroSection
   ============================================================ */
.hero-section {
  height: calc(100vh - var(--navbar-height));
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
}

.hero-content {
  flex: 0 0 40%;
  max-width: 40%;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-headline {
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--color-navy);
  line-height: 1.2;
  margin-bottom: 1rem;
}

.hero-subheadline {
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--color-blue);
  line-height: 1.2;
  margin-bottom: 1rem;
}

.hero-subtext {
  font-size: 1.0rem;
  color: var(--color-grey-mid);
  margin-bottom: 2rem;
}

.cta-btn {
  display: inline-block;
  background: var(--color-teal);
  color: var(--color-white);
  padding: 0.875rem 2rem;
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 600;
  letter-spacing: 0.05em;
  transition: background 0.2s;    
  width: 40%;
  align-items: center;
  text-align: center;
}

.cta-btn:hover {
  background: var(--color-teal-dark);
}

.hero-graphic {
  flex: 0 0 60%;
  max-width: 60%;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}

.hero-graphic img,
.hero-graphic video {
  width: 100%;
  height: 100%;
  max-height: calc(100vh - var(--navbar-height));
  object-fit: contain;
  display: block;
}

.hero-svg {
  max-width: 100%;
  height: auto;
}

/* ============================================================
   Section Common Styles
   ============================================================ */
.section-title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 3rem;
  color: var(--color-navy);
}

/* ============================================================
   ServicesSection  (Task 11.2 — responsive grid)
   Desktop: 4-col  |  Tablet: 2-col  |  Mobile: 1-col
   ============================================================ */
.services-section {
  padding: var(--section-padding);
  background: var(--color-white);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.service-card {
  background: var(--color-bg);
  border-radius: var(--border-radius);
  padding: 2rem 1.5rem;
  box-shadow: var(--shadow);
  transition: transform 0.2s;
}

.service-card:hover {
  transform: translateY(-4px);
}

.service-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.service-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--color-navy);
}

.service-description {
  color: #525151;
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  padding-left: 1.25rem;
  list-style: disc;
}

.service-subtitle {
  color: var(--color-grey-mid);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  list-style: disc;
}

.service-description li {
  margin-bottom: 0.4rem;
}

.learn-more-link {
  color: var(--color-teal);
  font-weight: 500;
  text-decoration: none;
}

.learn-more-link:hover {
  text-decoration: underline;
}

/* ============================================================
   ProjectsSection  (Task 11.3 — responsive grid)
   Desktop: 3-col  |  Mobile: 1-col
   ============================================================ */
.projects-section {
  padding: var(--section-padding);
  background: var(--color-bg-alt);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.project-card {
  background: var(--color-white);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.project-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: var(--color-grey-light);
}

.project-info {
  padding: 1.5rem;
}

.project-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.project-description {
  color: var(--color-grey-mid);
  font-size: 0.95rem;
}

/* ============================================================
   ContactSection  (Task 11.4 — side-by-side → stacked)
   Desktop: 2-col side-by-side  |  Mobile: 1-col stacked
   ============================================================ */
.contact-section {
  padding: var(--section-padding);
  background: var(--color-white);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.form-field label {
  font-weight: 500;
  font-size: 0.9rem;
}

.form-field input,
.form-field select,
.form-field textarea {
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-grey-light);
  border-radius: var(--border-radius);
  font-family: inherit;
  font-size: 1rem;
  color: var(--color-navy);
  background: var(--color-bg);
}

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

.field-error {
  color: #c0392b;
  font-size: 0.85rem;
}

.submit-button {
  background: var(--color-teal);
  color: var(--color-white);
  border: none;
  padding: 0.875rem 2rem;
  border-radius: var(--border-radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.submit-button:hover:not(:disabled) {
  background: var(--color-teal-dark);
}

.submit-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.success-message {
  background: #d4edda;
  color: #155724;
  padding: 1rem;
  border-radius: var(--border-radius);
}

.error-banner {
  background: #f8d7da;
  color: #721c24;
  padding: 1rem;
  border-radius: var(--border-radius);
  margin-bottom: 1rem;
}

.office-info {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.office-heading {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-teal);
}

.office-address,
.office-phone,
.office-email {
  color: var(--color-navy);
}

.map-thumbnail {
  width: 100%;
  border-radius: var(--border-radius);
  margin-top: 1rem;
}

.globe-animation { 
  width: 100%;
  max-width: 500px; 
  height: auto;
  border-radius: 50%; 
  box-shadow: 0 0 40px rgba(18, 90, 170, 0.2); 
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background: var(--color-navy);
  color: var(--color-white);
  text-align: center;
  padding: 1.5rem 2rem;
}

/* Service detail panel — appears below the grid on "Learn More" click */
.service-detail-panel {
  width: 100%;
  min-height: 100px;
  margin-top: 1.5rem;
  background: #93bbdb;
  border: 1px solid var(--color-grey-light);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 1.5rem 2rem;
  font-size: 1rem;
  color: var(--color-navy);
  box-sizing: border-box;
}

/* Leaflet office map */
.office-map {
  width: 100%;
  height: 395px;
  margin-top: 1rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--color-grey-light);
}

/* Project card media row: image with icon overlaid top-left */
.project-media {
  position: relative;
  display: block;
}

.project-icon {
  position: absolute;
  top: 30%;
  right: 1.1rem;
  font-size: 3rem;
  line-height: 1;
  padding: 0.3rem 0.4rem;
  z-index: 1;
}

.project-media .project-image {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-radius: var(--border-radius);
  display: block;
}

/* Sub-projects list */
.subproject-list {
  list-style: none;
  padding: 0;
  margin: 0.75rem 0 0;
}

.subproject-item {
  display: flex;
  flex-direction: column;
  padding: 0.5rem 0;
  border-top: 1px solid var(--color-grey-light);
}

.subproject-item:first-child {
  border-top: none;
}

.subproject-title {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-navy);
}

.subproject-desc {
  font-size: 0.875rem;
  color: var(--color-grey-mid);
  margin-top: 0.2rem;
}


/* ============================================================
   Responsive Breakpoints
   ============================================================ */

/* --- Tablet (≤ 1024px): ServicesSection → 2-col --- */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .project-icon {
    right: 0.95rem;
  }
}

/* --- Mobile (≤ 768px) --- */
@media (max-width: 768px) {
  /* NavBar: show hamburger, hide inline links */
  .hamburger-btn {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--navbar-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: 1rem 2rem;
    box-shadow: var(--shadow);
  }

  .nav-links.open {
    display: flex;
  }

  /* HeroSection: full width text, hide graphic */
  .hero-section {
    flex-direction: column;
    text-align: center;
  }

  .hero-content {
    flex: 0 0 100%;
    max-width: 100%;
  }

  .hero-graphic {
    display: none;
  }

  /* ServicesSection: 1-col */
  .services-grid {
    grid-template-columns: 1fr;
  }

  /* ProjectsSection: 1-col */
  .projects-grid {
    grid-template-columns: 1fr;
  }

  /* ContactSection: stack form + office info */
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .cta-btn{
    width: 100%;
  }

  .project-icon {
    font-size: 2rem;
    right: 0.8rem;
  }
}