/* ============================================================
   MarvarferDev — Global Styles
   ============================================================ */

:root {
  --color-bg: #0d0f14;
  --color-surface: #161b27;
  --color-surface-2: #1e2535;
  --color-border: #2a3347;
  --color-accent: #4f8ef7;
  --color-accent-hover: #7aaeff;
  --color-accent-2: #8b5cf6;
  --color-text: #e4e9f2;
  --color-text-muted: #8994aa;
  --color-success: #22c55e;
  --color-error: #ef4444;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --radius: 10px;
  --radius-lg: 18px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --transition: 0.2s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.65;
  min-height: 100vh;
}

/* ---- Typography ---- */
h1, h2, h3, h4 { line-height: 1.2; font-weight: 700; }
h1 { font-size: clamp(2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); }
h3 { font-size: 1.2rem; }
p { color: var(--color-text-muted); }
a { color: var(--color-accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent-hover); }

strong { color: var(--color-text); font-weight: 600; }

.highlight { color: var(--color-accent); }
.highlight-2 { color: var(--color-accent-2); }

/* ---- Layout ---- */
.container {
  width: 100%;
  max-width: 1100px;
  margin-inline: auto;
  padding-inline: 1.5rem;
}

section { padding-block: 5rem; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-decoration: none;
}
.btn-primary {
  background: var(--color-accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(79,142,247,0.35);
}
.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
}
.btn-outline:hover {
  background: rgba(79,142,247,0.1);
  color: var(--color-accent-hover);
  transform: translateY(-2px);
}
.btn-ghost {
  background: var(--color-surface-2);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover {
  background: var(--color-border);
  color: var(--color-text);
  transform: translateY(-2px);
}
.btn-sm { padding: 0.5rem 1.1rem; font-size: 0.85rem; }

/* ---- Cards ---- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

/* ---- Badge ---- */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  background: rgba(79,142,247,0.15);
  color: var(--color-accent);
  border: 1px solid rgba(79,142,247,0.3);
}
.badge-purple {
  background: rgba(139,92,246,0.15);
  color: var(--color-accent-2);
  border-color: rgba(139,92,246,0.3);
}
.badge-green {
  background: rgba(34,197,94,0.15);
  color: var(--color-success);
  border-color: rgba(34,197,94,0.3);
}

/* ---- Section header ---- */
.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}
.section-header p {
  max-width: 560px;
  margin-inline: auto;
  margin-top: 0.75rem;
  font-size: 1.05rem;
}

/* ---- Grid layouts ---- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

/* ---- Navbar ---- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13,15,20,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.navbar-logo {
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--color-text);
  letter-spacing: -0.5px;
}
.navbar-logo span { color: var(--color-accent); }
.navbar-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.navbar-links a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
}
.navbar-links a:hover,
.navbar-links a.active { color: var(--color-text); }

/* ---- Footer ---- */
.footer {
  border-top: 1px solid var(--color-border);
  padding-block: 2.5rem;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}
.footer a { color: var(--color-text-muted); }
.footer a:hover { color: var(--color-accent); }

/* ---- Forms ---- */
.form-group { display: flex; flex-direction: column; gap: 0.4rem; margin-bottom: 1.25rem; }
.form-group label { font-size: 0.9rem; font-weight: 500; color: var(--color-text); }
.form-control {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  color: var(--color-text);
  font-size: 0.95rem;
  font-family: var(--font-sans);
  transition: border-color var(--transition);
  width: 100%;
}
.form-control:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(79,142,247,0.15);
}
.form-control::placeholder { color: var(--color-text-muted); }
textarea.form-control { resize: vertical; min-height: 120px; }

/* ---- Divider ---- */
.divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin-block: 3rem;
}

/* ---- Code tag ---- */
code {
  font-family: var(--font-mono);
  background: var(--color-surface-2);
  padding: 0.15em 0.45em;
  border-radius: 5px;
  font-size: 0.88em;
  color: var(--color-accent-2);
}

/* ---- Responsive nav ---- */
@media (max-width: 700px) {
  .navbar-links { gap: 1rem; }
  .navbar-links a { font-size: 0.82rem; }
}
@media (max-width: 500px) {
  .navbar-links { display: none; }
}