/* =============================================
   CSS Custom Properties
   ============================================= */
:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: #1a1a1a;
  --accent: #00cc66;
  --accent-dim: rgba(0, 204, 102, 0.1);
  --text-heading: #ffffff;
  --text-body: #cccccc;
  --text-muted: #888888;
  --border: #222222;
  --font-stack: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

/* =============================================
   Base
   ============================================= */
html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-body);
  font-family: var(--font-stack);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--text-heading);
  line-height: 1.2;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--text-heading);
}

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

/* =============================================
   Navbar
   ============================================= */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 0;
  background: transparent;
  transition: background 0.3s ease, box-shadow 0.3s ease, padding 0.3s ease;
}

#navbar.scrolled {
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 1px 0 var(--border);
  padding: 0.75rem 0;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.nav-logo img {
  border-radius: 50%;
  display: block;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 101;
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text-heading);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-body);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: color 0.2s ease;
}

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

/* =============================================
   Buttons
   ============================================= */
.btn {
  display: inline-block;
  padding: 0.625rem 1.5rem;
  border-radius: 4px;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
  border: 2px solid transparent;
  text-align: center;
  line-height: 1.4;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
}

.btn-primary:hover {
  background: #00e673;
  border-color: #00e673;
  color: #000;
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}

.btn-outline:hover {
  background: var(--accent-dim);
  color: var(--accent);
}

/* =============================================
   Section Title
   ============================================= */
.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 2.5rem;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  display: block;
  width: 3rem;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
  margin-top: 0.5rem;
}

/* =============================================
   Contact Section
   ============================================= */
.contact {
  padding: 5rem 1.5rem;
  background: var(--bg-secondary);
}

.contact-container {
  max-width: 1200px;
  margin: 0 auto;
}

.contact-intro {
  color: var(--text-muted);
  font-size: 1rem;
  margin-top: -1.5rem;
  margin-bottom: 2rem;
  max-width: 500px;
}

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

.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 1.5rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  text-decoration: none;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.contact-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  text-decoration: none;
}

.contact-card svg {
  color: var(--accent);
}

.contact-card-label {
  color: var(--text-heading);
  font-size: 0.95rem;
  font-weight: 600;
}

.contact-card-detail {
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* =============================================
   Footer
   ============================================= */
.footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem;
  text-align: center;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-bottom: 0.25rem;
}

.footer-powered {
  color: var(--text-muted);
  font-size: 0.75rem;
  opacity: 0.6;
}