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

:root {
  --bg-base:    #080808;
  --bg-s1:      #111111;
  --bg-s2:      #1a1a1a;
  --bg-s3:      #242424;
  --border:     #2a2a2a;
  --border-hi:  #3d3d3d;
  --border-gl:  rgba(255,255,255,0.07);
  --fg1:        #f5f5f5;
  --fg2:        #a0a0a0;
  --fg3:        #5a5a5a;
  --accent:     #ff5500;
  --accent-hv:  #ff6a1f;
  --accent-gl:  rgba(255,85,0,0.15);
  --success:    #22c55e;
  --error:      #ef4444;
  --font-d:     'Inter Tight', system-ui, sans-serif;
  --font-b:     'Inter', system-ui, sans-serif;
  --font-m:     'JetBrains Mono', monospace;
  --r-sm:       6px;
  --r-md:       10px;
  --r-lg:       16px;
  --r-xl:       24px;
  --ease:       cubic-bezier(0.16, 1, 0.3, 1);
}

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

html, body {
  background: var(--bg-base);
  color: var(--fg1);
  font-family: var(--font-b);
  font-size: 15px;
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Animated background canvas ─────────────────────────── */
#bg-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

/* ── Top Nav ─────────────────────────────────────────────── */
.top-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 52px;
  background: rgba(8,8,8,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  z-index: 200;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}
.nav-logo-text {
  font-family: var(--font-d);
  font-size: 15px;
  font-weight: 700;
  color: var(--fg1);
  letter-spacing: -0.03em;
}
.nav-links { display: flex; gap: 4px; align-items: center; }
.nav-btn {
  height: 32px;
  padding: 0 12px;
  border-radius: 8px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--fg2);
  font-family: var(--font-b);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 150ms ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.nav-btn:hover { color: var(--fg1); text-decoration: none; }
.nav-btn.active {
  background: var(--bg-s2);
  border-color: var(--border);
  color: var(--fg1);
}

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 40px;
  padding: 0 18px;
  border-radius: var(--r-md);
  font-family: var(--font-b);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: all 150ms ease;
  white-space: nowrap;
  border: none;
  text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: scale(0.97); }
.btn-lg { height: 48px; padding: 0 24px; font-size: 17px; }
.btn-sm { height: 32px; padding: 0 12px; font-size: 13px; border-radius: 8px; }
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-hv);
  box-shadow: 0 0 24px rgba(255,85,0,0.25);
  color: #fff;
}
.btn-primary:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
}
.btn-secondary {
  background: var(--bg-s2);
  color: var(--fg1);
  border: 1px solid var(--border);
}
.btn-secondary:hover { border-color: var(--border-hi); color: var(--fg1); }
.btn-ghost {
  background: transparent;
  color: var(--fg2);
  border: none;
}
.btn-ghost:hover { color: var(--fg1); }
.btn-danger {
  background: rgba(239,68,68,0.1);
  color: var(--error);
  border: 1px solid rgba(239,68,68,0.2);
}
.btn-danger:hover { background: rgba(239,68,68,0.18); }
.btn-full { width: 100%; }

/* ── Inputs ──────────────────────────────────────────────── */
.input {
  width: 100%;
  height: 42px;
  padding: 0 14px;
  background: var(--bg-s2);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  color: var(--fg1);
  font-family: var(--font-b);
  font-size: 15px;
  outline: none;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}
.input:focus {
  border-color: rgba(255,85,0,0.6);
  box-shadow: 0 0 0 3px rgba(255,85,0,0.1);
}
.input::placeholder { color: var(--fg3); }
.input.error { border-color: var(--error); }
.input.success { border-color: var(--success); }
textarea.input { height: auto; padding: 12px 14px; resize: vertical; line-height: 1.5; }

.label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--fg3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}
.field { margin-bottom: 16px; }
.field-hint { font-size: 12px; color: var(--fg3); margin-top: 4px; }
.field-error { font-size: 12px; color: var(--error); margin-top: 4px; }

/* ── Cards ───────────────────────────────────────────────── */
.card {
  background: var(--bg-s1);
  border: 1px solid var(--border-gl);
  border-radius: var(--r-lg);
  box-shadow: 0 4px 16px rgba(0,0,0,0.5);
}
.card-body { padding: 24px; }

/* ── Badges ──────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  height: 22px;
  padding: 0 8px;
  border-radius: 9999px;
  font-size: 11px;
  font-weight: 500;
  white-space: nowrap;
  border: 1px solid;
}
.badge::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
  display: inline-block;
}
.badge-active  { background: rgba(34,197,94,0.12); color: var(--success); border-color: rgba(34,197,94,0.25); }
.badge-default { background: var(--bg-s2); color: var(--fg2); border-color: var(--border); }
.badge-accent  { background: rgba(255,85,0,0.12); color: var(--accent); border-color: rgba(255,85,0,0.25); }
.badge-error   { background: rgba(239,68,68,0.1); color: var(--error); border-color: rgba(239,68,68,0.25); }

/* ── Page wrapper ────────────────────────────────────────── */
.page { position: relative; z-index: 1; min-height: 100vh; padding-top: 52px; }
.page-inner { max-width: 800px; margin: 0 auto; padding: 32px 24px; }
.page-inner-sm { max-width: 520px; margin: 0 auto; padding: 40px 24px; }

/* ── Alert ───────────────────────────────────────────────── */
.alert {
  padding: 12px 16px;
  border-radius: var(--r-md);
  font-size: 13px;
  margin-bottom: 16px;
}
.alert-error { background: rgba(239,68,68,0.1); border: 1px solid rgba(239,68,68,0.25); color: #fca5a5; }
.alert-success { background: rgba(34,197,94,0.1); border: 1px solid rgba(34,197,94,0.25); color: #86efac; }
.alert-info { background: rgba(255,85,0,0.07); border: 1px solid rgba(255,85,0,0.2); color: var(--fg2); }

/* ── Checkbox ────────────────────────────────────────────── */
.checkbox-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
}
.checkbox-wrap input[type="checkbox"] {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  border: 1px solid var(--border-hi);
  background: var(--bg-s2);
  accent-color: var(--accent);
  cursor: pointer;
  flex-shrink: 0;
}
.checkbox-label { font-size: 13px; color: var(--fg2); }

/* ── Animations ──────────────────────────────────────────── */
@keyframes fadeup {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.4} }
@keyframes shimmer {
  0%   { background-position: 200% center; }
  100% { background-position: -200% center; }
}

.fadeup { animation: fadeup 0.4s var(--ease) forwards; }

/* ── Spinner ─────────────────────────────────────────────── */
.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}
.spinner-lg { width: 40px; height: 40px; border-width: 3px; }

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

/* ── Gate-specific ───────────────────────────────────────── */
.gate-step-card {
  background: var(--bg-s2);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 16px;
  transition: border-color 150ms ease;
}
.gate-step-card.completed {
  border-color: rgba(34,197,94,0.3);
  background: rgba(34,197,94,0.04);
}
.gate-step-card.pending { border-color: rgba(255,85,0,0.3); background: rgba(255,85,0,0.04); }

/* ── Progress bar ────────────────────────────────────────── */
.progress-bar {
  height: 2px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 300ms ease;
}

/* ── Tag/chip ────────────────────────────────────────────── */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 24px;
  padding: 0 10px;
  border-radius: 9999px;
  background: var(--bg-s2);
  border: 1px solid var(--border);
  font-size: 12px;
  color: var(--fg2);
}

/* ── Tabs ────────────────────────────────────────────────── */
.tabs {
  display: flex;
  gap: 2px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}
.tab-btn {
  height: 36px;
  padding: 0 16px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--fg3);
  font-family: var(--font-b);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 150ms ease;
  margin-bottom: -1px;
}
.tab-btn:hover { color: var(--fg2); }
.tab-btn.active { color: var(--fg1); border-bottom-color: var(--accent); }