/* ------------------------------
   GLOBAL THEME
------------------------------ */

:root {
  --bg: #020617;
  --bg-alt: #0f172a;
  --card: #0b1220;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --accent2: #22c55e;
  --border: #1e293b;
  --radius: 12px;
  --font: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", sans-serif;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
}

/* ------------------------------
   NAVIGATION
------------------------------ */

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: rgba(2, 6, 23, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav a {
  color: var(--muted);
  margin-left: 1.2rem;
  text-decoration: none;
  font-weight: 500;
}

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

/* ------------------------------
   HERO SECTIONS
------------------------------ */

.hero {
  padding: 5rem 2rem;
  text-align: center;
  background: linear-gradient(135deg, #0f172a, #020617);
}

.hero h1 {
  font-size: 2.8rem;
  margin-bottom: 1rem;
}

.hero p {
  max-width: 600px;
  margin: 0 auto;
  color: var(--muted);
}

/* ------------------------------
   BUTTONS
------------------------------ */

.btn {
  display: inline-block;
  padding: 0.7rem 1.4rem;
  margin-top: 1.2rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #020617;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
}

.btn:hover {
  filter: brightness(1.1);
}

/* ------------------------------
   SECTIONS
------------------------------ */

.section {
  padding: 3rem 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

.section h2 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

/* ------------------------------
   CARDS
------------------------------ */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.2rem;
  margin-top: 1.5rem;
}

.card {
  padding: 1.4rem;
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  text-align: center;
  color: var(--text);
  text-decoration: none;
  transition: 0.2s ease;
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}

/* ------------------------------
   FORMS
------------------------------ */

input, button {
  font-family: var(--font);
}

input {
  width: 100%;
  padding: 0.7rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-alt);
  color: var(--text);
  margin-bottom: 1rem;
}

input:focus {
  outline: 2px solid var(--accent);
}