/* Basic, clean, responsive styling */
:root {
  --bg: #0f172a; /* slate-900 */
  --panel: #111827; /* gray-900 */
  --text: #e5e7eb; /* gray-200 */
  --muted: #9ca3af; /* gray-400 */
  --primary: #60a5fa; /* blue-400 */
  --primary-strong: #3b82f6; /* blue-500 */
  --danger: #ef4444; /* red-500 */
  --success: #22c55e; /* green-500 */
  --shadow: rgba(0,0,0,.3);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: radial-gradient(80vw 80vh at 10% 10%, #0b1225, var(--bg));
}

.container { width: min(1100px, 92%); margin: 0 auto; }

.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(17,24,39,0.7);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between; padding: 14px 0;
}
.brand { color: #fff; text-decoration: none; font-weight: 600; letter-spacing: .2px; }
nav a { color: var(--muted); text-decoration: none; margin-left: 18px; }
nav a:hover { color: var(--text); }

.hero {
  padding: 56px 0 24px;
}
.hero h1 { font-size: clamp(2rem, 4vw, 3rem); margin: 0 0 10px; }
.lead { color: var(--muted); font-size: 1.1rem; }

.btn {
  display: inline-block; margin-top: 18px; padding: 10px 16px; border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  color: #fff; text-decoration: none; font-weight: 600; box-shadow: 0 10px 20px -10px var(--primary);
  transition: transform .1s ease, box-shadow .2s ease, filter .2s ease;
}
.btn:hover { transform: translateY(-1px); filter: brightness(1.05); }
.btn:active { transform: translateY(0); }

.section { padding: 24px 0; }

.site-footer { margin-top: 64px; border-top: 1px solid rgba(255,255,255,0.06); }
.site-footer .container { padding: 18px 0; color: var(--muted); font-size: .95rem; }

/* Card/panel styles */
.card {
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02));
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 16px; padding: 20px; box-shadow: 0 10px 30px -20px var(--shadow);
}

/* Messages */
.messages { margin: 16px 0; }
.message { padding: 12px 14px; border-radius: 10px; margin-bottom: 10px; border: 1px solid rgba(255,255,255,0.06); }
.message.info { background: rgba(59,130,246,0.1); }
.message.success { background: rgba(34,197,94,0.12); border-color: rgba(34,197,94,0.25); }
.message.warning { background: rgba(234,179,8,0.12); border-color: rgba(234,179,8,0.25); }
.message.error { background: rgba(239,68,68,0.12); border-color: rgba(239,68,68,0.25); }

/* Forms */
.contact-form { margin-top: 8px; }
.form-row { margin-bottom: 14px; }
label { display: block; margin-bottom: 6px; color: var(--muted); font-weight: 600; }
input[type="text"], input[type="email"], textarea {
  width: 100%; padding: 12px 12px; border-radius: 12px; outline: none; border: 1px solid rgba(255,255,255,0.08);
  background: rgba(2,6,23,0.6); color: var(--text); box-shadow: inset 0 1px 0 rgba(255,255,255,0.03);
}
input:focus, textarea:focus { border-color: rgba(96,165,250,0.6); box-shadow: 0 0 0 2px rgba(59,130,246,0.25); }
.error { color: #fecaca; font-size: .95rem; margin-top: 6px; }
.form-actions { margin-top: 18px; }

/* Sections */
.about { margin-top: 22px; }

@media (min-width: 800px) {
  .two-col { display: grid; grid-template-columns: 1.2fr 1fr; gap: 28px; align-items: start; }
}