/* =============================================
   GLOBAL.CSS — Portfolio Dierickx Simon
   Dark tech / terminal aesthetic
   ============================================= */

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

:root {
  --bg:        #0a0c0f;
  --bg-1:      #0f1218;
  --bg-2:      #141820;
  --bg-3:      #1c2330;
  --accent:    #00e5a0;
  --accent-2:  #00b8d4;
  --accent-dim:#00e5a030;
  --text:      #e8edf5;
  --text-muted:#8896a8;
  --text-dim:  #4a5568;
  --border:    #1e2a38;
  --border-2:  #2d3e52;
  --card:      #111620;
  --card-hover:#161d2a;
  --red:       #ff4d6d;
  --yellow:    #ffd166;
  --radius:    8px;
  --radius-lg: 16px;
  --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
  --font-mono: 'JetBrains Mono', monospace;
  --font-body: 'Sora', sans-serif;
}

body.light-mode {
  --bg:        #f6f8fc;
  --bg-1:      #eef2f8;
  --bg-2:      #e5ebf3;
  --bg-3:      #dbe4ef;
  --accent:    #0a7f63;
  --accent-2:  #0b6a86;
  --accent-dim:#0a7f6315;
  --text:      #101828;
  --text-muted:#5b6778;
  --text-dim:  #7d8796;
  --border:    #d5deea;
  --border-2:  #c3cfdd;
  --card:      #ffffff;
  --card-hover:#f9fbfe;
  --red:       #c81e4a;
  --yellow:    #b7791f;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Grid background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.3;
  pointer-events: none;
  z-index: 0;
}

body.light-mode::before {
  opacity: 0.18;
}

/* -------- HEADER -------- */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 64px;
  background: rgba(10, 12, 15, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  gap: 1rem;
}

body.light-mode header {
  background: rgba(246, 248, 252, 0.9);
}

.logo {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.logo span {
  color: var(--text-muted);
}

nav {
  display: flex;
  gap: 0.25rem;
  flex: 1;
}

nav a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius);
  transition: var(--transition);
  letter-spacing: 0.05em;
}

nav a:hover,
nav a.active {
  color: var(--accent);
  background: var(--accent-dim);
}

#theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-muted);
  font-size: 0.85rem;
  text-decoration: none;
  flex-shrink: 0;
}

#theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}

body.light-mode #theme-toggle {
  background: var(--bg-1);
}

/* -------- HAMBURGER MENU (MOBILE) -------- */
.hamburger-btn {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  gap: 4px;
  padding: 0;
  flex-shrink: 0;
}

.hamburger-btn span {
  width: 20px;
  height: 2px;
  background: var(--text-muted);
  border-radius: 1px;
  transition: var(--transition);
}

.hamburger-btn:hover {
  border-color: var(--accent);
  background: var(--bg-2);
}

.hamburger-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.hamburger-btn.active span:nth-child(2) {
  opacity: 0;
}

.hamburger-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

body.light-mode .hamburger-btn {
  background: var(--bg-1);
}

/* -------- RESPONSIVE NAV -------- */
@media (max-width: 768px) {
  header {
    padding: 0 1rem;
    justify-content: space-between;
  }

  header .logo {
    flex: 1;
  }

  nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(10, 12, 15, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
    z-index: 99;
  }

  body.light-mode nav {
    background: rgba(246, 248, 252, 0.95);
  }

  nav.active {
    max-height: 300px;
  }

  nav a {
    padding: 1rem 1.5rem;
    border-radius: 0;
    border-bottom: 1px solid var(--border-2);
    font-size: 0.9rem;
  }

  nav a:last-child {
    border-bottom: none;
  }

  .hamburger-btn {
    display: flex;
  }

  #theme-toggle {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
  }
}

/* -------- PAGE WRAPPER -------- */
main {
  position: relative;
  z-index: 1;
  padding-top: 64px;
}

/* -------- SECTION HELPERS -------- */
.section {
  padding: 6rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-label::before {
  content: '//';
  opacity: 0.5;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
  margin-bottom: 1rem;
}

.section-title em {
  font-style: normal;
  color: var(--accent);
}

/* -------- CARDS -------- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: var(--transition);
}

.card:hover {
  border-color: var(--border-2);
  background: var(--card-hover);
  transform: translateY(-2px);
}

.card:hover::before {
  opacity: 1;
}

/* -------- BADGE -------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
  border: 1px solid var(--border-2);
  background: var(--bg-3);
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.badge.green  { border-color: #00e5a040; color: var(--accent); background: #00e5a010; }
.badge.blue   { border-color: #00b8d440; color: var(--accent-2); background: #00b8d410; }
.badge.yellow { border-color: #ffd16640; color: var(--yellow); background: #ffd16610; }

/* -------- BUTTON -------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius);
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  letter-spacing: 0.05em;
}

.btn-primary {
  background: var(--accent);
  color: #000;
  font-weight: 600;
}

.btn-primary:hover {
  background: #00ffc0;
  transform: translateY(-1px);
  box-shadow: 0 8px 25px #00e5a030;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-2);
  color: var(--text-muted);
}

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

/* -------- FOOTER -------- */
footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding: 3rem 2rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

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

.footer-brand .logo {
  display: block;
  margin-bottom: 0.75rem;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.footer-col a {
  display: block;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--text);
}

.footer-social {
  display: flex;
  gap: 0.5rem;
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  color: var(--text-muted) !important;
  font-size: 0.85rem;
  transition: var(--transition);
  text-decoration: none;
  margin-bottom: 0 !important;
}

.footer-social a:hover {
  border-color: var(--accent);
  color: var(--accent) !important;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* -------- ANIMATIONS -------- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.animate {
  opacity: 0;
  animation: fadeUp 0.6s ease forwards;
}

/* -------- RESPONSIVE -------- */
@media (max-width: 768px) {
  nav a span { display: none; }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  header { padding: 0 1rem; }
  .logo { font-size: 0.85rem; }
  .footer-grid { grid-template-columns: 1fr; }
}