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

/* ── Palette ────────────────────────────────────────────── */
:root {
  --bg:         #060e06;
  --green:      #00ff41;
  --green-dim:  #4dff91;
  --green-mute: #2a7a2a;
  --green-hi:   #afffcf;
  --border:     #1a3d1a;
}

/* ── Base ───────────────────────────────────────────────── */
body {
  background: var(--bg);
  color: var(--green);
  font-family: 'Courier New', Courier, monospace;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── Matrix rain canvas ─────────────────────────────────── */
#matrix-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100vw; height: 100vh;
  z-index: 0;
  opacity: 0.22;
  pointer-events: none;
}

/* ── Layout wrapper ─────────────────────────────────────── */
.m-wrap {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ── Nav ────────────────────────────────────────────────── */
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 2rem;
  background: rgba(6,14,6,0.85);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(4px);
}
nav .nav-brand {
  font-size: 1.1rem;
  letter-spacing: 0.15em;
  color: var(--green);
  text-decoration: none;
  text-shadow: 0 0 10px var(--green);
}
nav .nav-links { display: flex; gap: 1.5rem; }
nav .nav-links a {
  color: var(--green-dim);
  text-decoration: none;
  letter-spacing: 0.1em;
  font-size: 0.9rem;
  transition: color 0.2s, text-shadow 0.2s;
}
nav .nav-links a:hover {
  color: var(--green);
  text-shadow: 0 0 8px var(--green);
}

/* ── Hero / main content ────────────────────────────────── */
main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 3rem 2rem;
}

h1 {
  font-size: clamp(1.8rem, 5vw, 3rem);
  letter-spacing: 0.04em;
  text-shadow: 0 0 24px var(--green), 0 0 6px var(--green-dim);
  margin-bottom: 0.6rem;
}

/* Subtitle with blinking cursor */
.m-sub {
  font-size: 0.95rem;
  color: var(--green-dim);
  opacity: 0.75;
  letter-spacing: 0.22em;
  margin-bottom: 2.5rem;
}
.m-sub::before { content: '> '; opacity: 0.5; }
.m-sub::after  { content: ' _'; animation: blink 1.1s step-end infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

/* ── Button ─────────────────────────────────────────────── */
.m-btn {
  display: block;
  width: 100%;
  padding: 0.5rem 0.5rem;
  border: 2px solid var(--green);
  color: var(--green);
  background: transparent;
  font-family: inherit;
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
  white-space: nowrap;
  text-align: center;
  box-sizing: border-box;
}
.m-btn:hover {
  background: var(--green);
  color: var(--bg);
  box-shadow: 0 0 28px var(--green), 0 0 8px var(--green-dim);
}
.m-btn + .m-btn { margin-left: 1rem; }
.m-btn.secondary {
  border-color: var(--green-mute);
  color: var(--green-mute);
}
.m-btn.secondary:hover {
  background: var(--green-mute);
  color: var(--bg);
  box-shadow: 0 0 18px var(--green-mute);
}


/* ── Card grid ──────────────────────────────────────────── */
.m-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  width: 100%;
  max-width: 900px;
  margin-top: 3rem;
}
.m-card {
  border: 1px solid var(--border);
  padding: 1.5rem;
  background: rgba(6,14,6,0.6);
  text-align: left;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.m-card:hover {
  border-color: var(--green-mute);
  box-shadow: 0 0 12px rgba(0,255,65,0.1);
}
.m-card h3 {
  font-size: 0.9rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  color: var(--green);
}
.m-card p {
  font-size: 0.82rem;
  color: var(--green-dim);
  opacity: 0.7;
  line-height: 1.6;
  letter-spacing: 0.05em;
}

/* ── Divider ────────────────────────────────────────────── */
.m-divider {
  width: 100%;
  max-width: 600px;
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.5rem auto;
}

/* ── Footer ─────────────────────────────────────────────── */
footer {
  padding: 0.75rem 2rem;
  background: rgba(6,14,6,0.85);
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.78rem;
  color: var(--green-mute);
  letter-spacing: 0.1em;
}

/* ── Mobile responsive ──────────────────────────────────── */
@media (max-width: 600px) {
  nav {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
  }
  nav .nav-links {
    gap: 1rem;
    flex-wrap: wrap;
  }

  main {
    padding: 2rem 1rem;
  }

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

/* ── Form inputs ────────────────────────────────────────── */
input[type="text"],
input[type="password"],
input[type="number"],
input[type="file"] {
  background: rgba(6,14,6,0.6);
  border: 1px solid var(--border);
  color: var(--green);
  padding: 0.5rem;
  font-family: inherit;
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
input[type="file"]:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 8px rgba(0,255,65,0.3);
}

code {
  background: rgba(0,0,0,0.3);
  padding: 0.2rem 0.4rem;
  border-radius: 2px;
  color: var(--green-hi);
}