/* THEME: THERMAL STEEL & BURNISHED BRASS */

:root {
  /* Updated Gradient: Cool Cyan to Metallic Brass */
  --thermal-grad: linear-gradient(90deg, #06b6d4 0%, #d4af37 100%);
  --thermal-text: linear-gradient(90deg, #22d3ee, #f0d686);

  /* Metals */
  --gunmetal: #1a1e23;
  --steel-dark: #23272e;
  --steel-light: #2f3640;
  --text-main: #e0e6ed;
  --text-muted: #94a3b8;

  /* Accent color: Burnished Brass */
  --accent-brass: #d4af37;

  --radius-lg: 24px;

  --font-head: "Rajdhani", sans-serif;
  --font-body: "Inter", sans-serif;
}

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

body {
  background-color: #0f1115;
  background-image: radial-gradient(circle at 50% 0%, #1e293b 0%, #0f1115 60%);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.6;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
}

/* Utilities */
.thermal-text {
  background: var(--thermal-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 800;
}

.thermal-line {
  height: 4px;
  width: 60px;
  background: var(--thermal-grad);
  margin: 1rem auto;
  border-radius: 4px;
}

/* Navigation */
.steel-nav {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 1rem 3rem;
  background: rgba(15, 17, 21, 0.95);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  backdrop-filter: blur(10px);
}

.brand-container {
  display: flex;
  align-items: center;
}

.gear-icon {
  width: 40px;
  height: 40px;
  animation: spin 10s linear infinite;
  filter: drop-shadow(0 0 5px rgba(212, 175, 55, 0.5));
}

@keyframes spin {
  100% {
    transform: rotate(360deg);
  }
}

.nav-links a {
  color: var(--text-main);
  text-decoration: none;
  margin-left: 2rem;
  font-size: 0.9rem;
  font-weight: 600;
  transition: 0.3s;
}

.nav-links a:hover {
  color: #22d3ee;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 8rem 2rem 4rem 2rem;
}

.steel-card {
  background: linear-gradient(160deg, var(--steel-dark), var(--gunmetal));
  border: 1px solid rgba(255, 255, 255, 0.05);
  padding: 4rem;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  max-width: 900px;
  position: relative;
  overflow: hidden;
}

.steel-card::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--thermal-grad);
}

.hero h1 {
  font-size: 3.5rem;
  line-height: 1.1;
  margin-bottom: 2rem;
}

.hero-desc {
  color: var(--text-muted);
  margin-bottom: 2rem;
  font-size: 1.1rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.signature-block {
  margin-bottom: 3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.sig-line {
  width: 40px;
  height: 1px;
  background: #444;
  margin-bottom: 1rem;
}

.sig-title {
  font-size: 0.8rem;
  letter-spacing: 2px;
  color: #64748b;
  font-weight: 600;
  text-transform: uppercase;
}

.btn-thermal {
  display: inline-block;
  padding: 1rem 3rem;
  background: var(--thermal-grad);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-family: var(--font-head);
  letter-spacing: 1px;
  transition: transform 0.2s;
  border-radius: 50px;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.btn-thermal:hover {
  transform: translateY(-2px);
}

/* Sections */
.container {
  padding: 6rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-size: 2.2rem;
  color: white;
}

/* Metal Panels */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.metal-panel {
  background: var(--steel-light);
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: 0.3s;
}

.metal-panel:hover {
  background: var(--steel-dark);
  transform: translateY(-5px);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.metal-panel h3 {
  font-size: 1.5rem;
}

.af-code {
  font-family: var(--font-head);
  font-size: 1.5rem;
  color: rgba(255, 255, 255, 0.1);
  font-weight: 700;
}

.quote {
  color: #22d3ee;
  font-style: italic;
  margin-bottom: 1rem;
  font-weight: 500;
}

/* Spec Grid */
.spec-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.spec-item {
  background: linear-gradient(145deg, #252b36, #1e232b);
  padding: 3rem 2rem;
  text-align: center;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.03);
  transition: 0.3s;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.spec-item:hover {
  border-color: var(--accent-brass);
}

.spec-item h4 {
  color: #fff;
  margin-bottom: 1rem;
  min-height: 2.5rem;
}
.spec-item p {
  color: var(--text-muted);
}

/* Footer / Contact */
.footer-section {
  padding-bottom: 4rem;
  text-align: center;
}
.contact-card {
  margin: 0 auto 3rem auto;
  max-width: 800px;
}

.contact-layout {
  display: flex;
  align-items: center;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 2rem;
  margin-top: 2rem;
  text-align: left;
}

.info-row {
  margin: 1rem 0;
  font-size: 1.1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding-bottom: 0.5rem;
}

.mail-link {
  color: #22d3ee;
  text-decoration: none;
  transition: color 0.2s;
}

.mail-link:hover {
  color: var(--accent-brass);
}

.profile-img {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--steel-light);
}

.cert-area {
  margin-top: 4rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.vosb-logo {
  height: 80px;
  width: auto;
  opacity: 0.8;
}

.vosb-text {
  font-size: 0.8rem;
  letter-spacing: 2px;
  color: #64748b;
  font-weight: 600;
}

.separator {
  color: var(--accent-brass);
  margin: 0 10px;
}
footer {
  color: #64748b;
  font-size: 0.8rem;
}

/* Mobile */
@media (max-width: 768px) {
  .steel-nav {
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
  }
  .nav-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-left: 0;
  }
  .hero h1 {
    font-size: 2.2rem;
  }
  .contact-layout {
    flex-direction: column-reverse;
    text-align: center;
  }
  .info-row {
    text-align: center;
  }
}