@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@300;400;500&family=Syne:wght@400;500;600;700;800&display=swap');

:root {
  --bg: #0a0a0f;
  --surface: #111118;
  --surface2: #1a1a24;
  --border: #232330;
  --accent: #6c63ff;
  --accent2: #00d4aa;
  --accent3: #ff6b6b;
  --text: #e8e8f0;
  --text-muted: #6b6b80;
  --text-dim: #3a3a50;
  --mono: 'DM Mono', monospace;
  --sans: 'Syne', sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* NAV */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10,10,15,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 0;
  height: 60px;
}

.nav-logo {
  font-family: var(--sans);
  font-weight: 800;
  font-size: 18px;
  color: var(--text);
  text-decoration: none;
  margin-right: auto;
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: -0.5px;
}

.nav-logo span {
  color: var(--accent);
}

.nav-logo .dot {
  width: 8px;
  height: 8px;
  background: var(--accent2);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.nav-links {
  display: flex;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 6px;
  transition: all 0.2s;
  white-space: nowrap;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--text);
  background: var(--surface2);
}

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

/* HAMBURGER */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  border: none;
  background: none;
  margin-left: 12px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text-muted);
  border-radius: 2px;
  transition: all 0.3s;
}

/* PAGE CONTAINER */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 48px 24px;
}

.page-header {
  margin-bottom: 40px;
}

.page-header h1 {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 8px;
}

.page-header h1 .icon {
  display: inline-block;
  margin-right: 12px;
  font-size: 28px;
}

.page-header p {
  color: var(--text-muted);
  font-size: 15px;
}

/* CARDS */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
}

.card-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 12px;
}

/* INPUTS */
textarea, input[type="text"], input[type="number"], input[type="email"], select {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--mono);
  font-size: 13px;
  padding: 12px 16px;
  outline: none;
  transition: border-color 0.2s;
  resize: vertical;
}

textarea:focus, input:focus, select:focus {
  border-color: var(--accent);
}

textarea { min-height: 160px; }

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
  cursor: pointer;
}

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: #7c75ff; transform: translateY(-1px); }

.btn-secondary {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

.btn-success {
  background: var(--accent2);
  color: #000;
}
.btn-success:hover { background: #00e8bb; }

.btn-danger {
  background: var(--accent3);
  color: #fff;
}

.btn-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
}

/* OUTPUT */
.output-box {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  font-family: var(--mono);
  font-size: 13px;
  min-height: 120px;
  word-break: break-all;
  white-space: pre-wrap;
  color: var(--text);
  position: relative;
}

.output-box.success { border-color: var(--accent2); }
.output-box.error { border-color: var(--accent3); color: var(--accent3); }

/* STATUS BADGE */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.badge-green { background: rgba(0,212,170,0.15); color: var(--accent2); }
.badge-red { background: rgba(255,107,107,0.15); color: var(--accent3); }
.badge-blue { background: rgba(108,99,255,0.15); color: var(--accent); }

/* TOAST */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.3s;
  z-index: 1000;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.toast.success { border-color: var(--accent2); color: var(--accent2); }
.toast.error { border-color: var(--accent3); color: var(--accent3); }

/* GRID */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* TAGS */
.tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

/* DIVIDER */
.divider {
  height: 1px;
  background: var(--border);
  margin: 20px 0;
}

/* RANGE LABEL */
.range-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.range-row label { font-size: 13px; color: var(--text-muted); flex: 1; }
.range-row .val {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  min-width: 32px;
  text-align: right;
}

/* MOBILE */
@media (max-width: 700px) {
  .nav-links { display: none; flex-direction: column; position: fixed; top: 60px; left: 0; right: 0; background: var(--bg); border-bottom: 1px solid var(--border); padding: 12px; }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 10px 16px; }
  .nav-toggle { display: flex; }
  .grid-2 { grid-template-columns: 1fr; }
  .container { padding: 32px 16px; }
  .page-header h1 { font-size: 24px; }
}