/* TSF.KR — Tracking Signal Feed shared styles */
@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.min.css');
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&display=swap');

:root {
  /* Surface */
  --bg-0: #05080d;          /* page */
  --bg-1: #0a0f17;          /* card */
  --bg-2: #0f1620;          /* raised */
  --bg-3: #161e2b;          /* inset */
  --line: #1c2433;
  --line-soft: #141b27;
  --line-strong: #2a3548;

  /* Text */
  --text-0: #e8eef7;
  --text-1: #b8c3d6;
  --text-2: #7a869c;
  --text-3: #4d5874;
  --text-mono: #c9d4e8;

  /* Signal */
  --ok: #10b981;
  --ok-soft: rgba(16, 185, 129, 0.12);
  --ok-glow: rgba(16, 185, 129, 0.45);
  --warn: #f59e0b;
  --warn-soft: rgba(245, 158, 11, 0.13);
  --crit: #f43f5e;
  --crit-soft: rgba(244, 63, 94, 0.13);
  --info: #38bdf8;
  --info-soft: rgba(56, 189, 248, 0.13);

  /* Brand accent — switchable by tweaks */
  --accent: #10b981;
  --accent-soft: rgba(16, 185, 129, 0.14);
  --accent-glow: rgba(16, 185, 129, 0.4);

  /* Type */
  --font-sans: 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Radius */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 14px;
  --r-xl: 20px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg-0);
  color: var(--text-0);
  font-family: var(--font-sans);
  font-feature-settings: 'ss01', 'ss02';
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.mono { font-family: var(--font-mono); font-feature-settings: 'zero', 'ss02'; }

::selection { background: var(--accent); color: var(--bg-0); }

/* —— Logo mark —— */
.tsf-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--text-0);
}
.tsf-mark__dot {
  position: relative;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft), 0 0 24px var(--accent-glow);
}
.tsf-mark__dot::after {
  content: ''; position: absolute; inset: -4px;
  border-radius: 50%;
  border: 1.5px solid var(--accent);
  animation: tsf-pulse 2.4s ease-out infinite;
  opacity: 0;
}

@keyframes tsf-pulse {
  0% { transform: scale(0.85); opacity: 0.9; }
  80%, 100% { transform: scale(2.6); opacity: 0; }
}

/* —— Pulse dot (status) —— */
.pulse {
  position: relative;
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 0 var(--ok-glow);
}
.pulse--warn { background: var(--warn); box-shadow: 0 0 0 0 rgba(245,158,11,0.5); }
.pulse--crit { background: var(--crit); box-shadow: 0 0 0 0 rgba(244,63,94,0.5); }
.pulse--idle { background: var(--text-3); box-shadow: none; }
.pulse::after {
  content: ''; position: absolute; inset: -3px;
  border-radius: 50%;
  border: 1.5px solid currentColor;
  color: var(--ok);
  animation: tsf-pulse 1.8s ease-out infinite;
  opacity: 0;
}
.pulse--warn::after { color: var(--warn); }
.pulse--crit::after { color: var(--crit); animation-duration: 1.1s; }
.pulse--idle::after { display: none; }

/* —— Buttons —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 40px;
  padding: 0 16px;
  border-radius: var(--r-md);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 80ms ease, background 120ms ease, border-color 120ms ease, color 120ms ease;
  white-space: nowrap;
  text-decoration: none;
  user-select: none;
}
.btn:active { transform: translateY(1px); }
.btn--primary {
  background: var(--accent);
  color: #04130c;
  box-shadow: 0 1px 0 rgba(255,255,255,0.15) inset, 0 8px 24px -8px var(--accent-glow);
}
.btn--primary:hover { background: color-mix(in oklab, var(--accent) 90%, white 10%); }
.btn--ghost {
  background: transparent;
  color: var(--text-0);
  border-color: var(--line-strong);
}
.btn--ghost:hover { border-color: var(--text-2); background: var(--bg-2); }
.btn--quiet {
  background: var(--bg-2);
  color: var(--text-1);
  border-color: var(--line);
}
.btn--quiet:hover { color: var(--text-0); border-color: var(--line-strong); }
.btn--danger {
  background: transparent;
  color: var(--crit);
  border-color: rgba(244,63,94,0.35);
}
.btn--danger:hover { background: var(--crit-soft); }
.btn--sm { height: 32px; padding: 0 12px; font-size: 13px; }
.btn--lg { height: 48px; padding: 0 22px; font-size: 15px; }

/* —— Cards —— */
.card {
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
}

/* —— Inputs —— */
.tsf-input, .input, .select, .textarea {
  width: 100%;
  height: 40px;
  padding: 0 12px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  color: var(--text-0);
  font-family: var(--font-sans);
  font-size: 14px;
  transition: border-color 120ms, background 120ms;
  outline: none;
}
.tsf-input:focus, .input:focus, .select:focus, .textarea:focus {
  border-color: var(--accent);
  background: var(--bg-1);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.tsf-input::placeholder, .input::placeholder, .textarea::placeholder { color: var(--text-3); }
select.tsf-input {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 14 14' fill='none'><path d='M3.5 5.25L7 8.75L10.5 5.25' stroke='%237a869c' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round'/></svg>");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
  cursor: pointer;
}
.textarea { height: auto; padding: 12px; resize: vertical; min-height: 80px; font-family: var(--font-mono); font-size: 13px; }

/* Custom select chevron */
.select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 14 14' fill='none'><path d='M3.5 5.25L7 8.75L10.5 5.25' stroke='%237a869c' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round'/></svg>");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
  cursor: pointer;
}
.select:hover { border-color: var(--line-strong); }

.label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-2);
  letter-spacing: 0.01em;
  margin-bottom: 6px;
}

/* —— Badges —— */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 22px;
  padding: 0 8px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.02em;
  border: 1px solid var(--line);
  background: var(--bg-2);
  color: var(--text-1);
}
.badge--ok { color: var(--ok); border-color: rgba(16,185,129,0.3); background: var(--ok-soft); }
.badge--warn { color: var(--warn); border-color: rgba(245,158,11,0.3); background: var(--warn-soft); }
.badge--crit { color: var(--crit); border-color: rgba(244,63,94,0.3); background: var(--crit-soft); }
.badge--info { color: var(--info); border-color: rgba(56,189,248,0.3); background: var(--info-soft); }

/* —— Section —— */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

/* —— Grid background —— */
.grid-bg {
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
}

.radial-glow {
  background: radial-gradient(ellipse 800px 400px at 50% 0%, var(--accent-soft), transparent 60%);
}

/* —— Animations —— */
@keyframes signal-sweep {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
@keyframes signal-bar {
  0%, 100% { transform: scaleY(0.4); opacity: 0.5; }
  50% { transform: scaleY(1); opacity: 1; }
}
@keyframes ticker {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0.2; }
}
@keyframes value-flash {
  0% { color: var(--accent); }
  100% { color: inherit; }
}
@keyframes scan-line {
  0% { transform: translateY(-100%); }
  100% { transform: translateY(2000%); }
}

.scrollbar-thin::-webkit-scrollbar { width: 8px; height: 8px; }
.scrollbar-thin::-webkit-scrollbar-track { background: transparent; }
.scrollbar-thin::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 4px; }
.scrollbar-thin::-webkit-scrollbar-thumb:hover { background: var(--text-3); }