/* ============================================================
   STAGE 00 · Brief Landing 전용 스타일
   ============================================================ */

.brief-app {
  min-height: 100vh;
  background: var(--bg-0);
  color: var(--text-1);
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: 0;
  position: relative;
}
.brief-app::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 900px 500px at 15% -5%, oklch(from var(--accent) l c h / 0.10), transparent 55%),
    radial-gradient(ellipse 800px 400px at 90% 100%, oklch(from var(--accent-3) l c h / 0.08), transparent 55%);
  pointer-events: none;
  z-index: 0;
}
.brief-app > * { position: relative; z-index: 1; }

/* ---------------- Topbar ---------------- */
.brief-topbar {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 18px 32px;
  border-bottom: 1px solid var(--line);
  background: oklch(from var(--bg-1) l c h / 0.6);
  backdrop-filter: blur(12px);
}
.brief-topbar-left {
  display: flex; align-items: center; gap: 12px;
}
.brief-topbar-crumb {
  display: flex; align-items: center; gap: 10px;
  font-size: 11px;
  letter-spacing: 0.15em;
}
.brief-crumb-active {
  color: var(--accent);
  padding: 4px 10px;
  border: 1px solid oklch(from var(--accent) l c h / 0.4);
  background: oklch(from var(--accent) l c h / 0.1);
  border-radius: 2px;
}
.brief-crumb-dim { color: var(--text-3); opacity: 0.5; }
.brief-crumb-sep { color: var(--text-3); opacity: 0.4; }
.brief-topbar-right { display: flex; justify-content: flex-end; }

/* ---------------- Hero ---------------- */
.brief-hero {
  padding: 40px 32px 20px;
  max-width: 1600px;
  margin: 0 auto;
  width: 100%;
}
.brief-hero-eyebrow {
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.22em;
  margin-bottom: 12px;
}
.brief-hero-title {
  font-family: "Pretendard Variable", sans-serif;
  font-size: 44px;
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--text-1);
  margin: 0 0 14px;
}
.brief-hero-em {
  color: var(--accent);
  font-weight: 500;
  font-style: normal;
  background: linear-gradient(180deg, transparent 60%, oklch(from var(--accent) l c h / 0.2) 60%);
  padding: 0 2px;
}
.brief-hero-desc {
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.6;
  max-width: 780px;
  margin-bottom: 22px;
}
.brief-hero-desc strong {
  color: var(--text-1);
  font-weight: 500;
}

/* ---------------- Presets ---------------- */
.brief-presets {
  display: flex;
  gap: 10px;
  align-items: stretch;
  flex-wrap: wrap;
  margin-top: 14px;
}
.brief-presets-label {
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--text-3);
  align-self: center;
  padding-right: 4px;
}
.brief-preset {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 3px;
  padding: 10px 14px;
  background: oklch(from var(--bg-1) l c h / 0.6);
  border: 1px solid var(--line);
  border-radius: 4px;
  cursor: pointer;
  text-align: left;
  transition: all 0.15s;
  color: var(--text-1);
  font-family: inherit;
}
.brief-preset:hover {
  border-color: oklch(from var(--accent) l c h / 0.5);
  background: oklch(from var(--accent) l c h / 0.06);
}
.brief-preset.active {
  border-color: var(--accent);
  background: oklch(from var(--accent) l c h / 0.1);
  box-shadow: 0 0 0 3px oklch(from var(--accent) l c h / 0.15);
}
.brief-preset-tag {
  font-size: 9px;
  letter-spacing: 0.15em;
  padding: 2px 6px;
  border-radius: 2px;
  margin-bottom: 2px;
  font-family: "Nanum Gothic Coding", monospace;
}
.brief-preset-tag-old { background: oklch(from var(--text-3) l c h / 0.15); color: var(--text-2); }
.brief-preset-tag-hot { background: oklch(from var(--accent) l c h / 0.2); color: var(--accent); }
.brief-preset-tag-new { background: oklch(from var(--accent-3) l c h / 0.2); color: var(--accent-3); }
.brief-preset-label { font-size: 13px; font-weight: 500; }
.brief-preset-sub { font-size: 10px; color: var(--text-3); }

/* ---------------- Workspace ---------------- */
.brief-workspace {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 24px;
  padding: 12px 32px 24px;
  max-width: 1600px;
  margin: 0 auto;
  width: 100%;
  align-items: start;
}

/* ---------------- Axes ---------------- */
.brief-axes-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.brief-axis {
  background: oklch(from var(--bg-1) l c h / 0.75);
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  transition: border-color 0.2s;
}
.brief-axis.has-value {
  border-color: oklch(from var(--accent) l c h / 0.35);
  background: oklch(from var(--bg-1) l c h / 0.9);
}
.brief-axis-head {
  display: grid;
  grid-template-columns: 40px 1fr auto 1.6fr 32px;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  cursor: pointer;
  transition: background 0.15s;
}
.brief-axis-head:hover { background: oklch(from var(--bg-2) l c h / 0.6); }
.brief-axis-marker {
  width: 32px; height: 32px;
  display: grid; place-items: center;
  background: oklch(from var(--ac) l c h / 0.15);
  color: var(--ac);
  border: 1px solid oklch(from var(--ac) l c h / 0.35);
  border-radius: 4px;
  font-size: 16px;
}
.brief-axis-titles { min-width: 0; }
.brief-axis-title-row {
  display: flex; align-items: center; gap: 8px; margin-bottom: 3px;
}
.brief-axis-label {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-1);
}
.brief-axis-req {
  font-size: 9px;
  letter-spacing: 0.15em;
  color: oklch(0.72 0.17 25);
  background: oklch(0.72 0.17 25 / 0.12);
  padding: 2px 6px;
  border-radius: 2px;
}
.brief-axis-multi {
  font-size: 9px;
  letter-spacing: 0.15em;
  color: var(--accent-2);
  background: oklch(from var(--accent-2) l c h / 0.15);
  padding: 2px 6px;
  border-radius: 2px;
}
.brief-axis-en {
  font-size: 10px;
  color: var(--text-3);
  letter-spacing: 0.08em;
}
.brief-axis-lead {
  display: flex; align-items: center; gap: 8px;
  padding: 4px 10px 4px 4px;
  background: oklch(from var(--ac) l c h / 0.08);
  border: 1px solid oklch(from var(--ac) l c h / 0.25);
  border-radius: 20px;
}
.brief-axis-lead-avatar {
  width: 20px; height: 20px;
  display: grid; place-items: center;
  background: var(--ac);
  color: var(--bg-0);
  font-size: 10px;
  font-weight: 700;
  border-radius: 50%;
}
.brief-axis-lead-name { font-size: 10px; color: var(--ac); }
.brief-axis-summary {
  display: flex; justify-content: flex-end; align-items: center;
  min-width: 0;
}
.brief-axis-chips {
  display: flex; gap: 4px; flex-wrap: wrap; justify-content: flex-end;
}
.brief-axis-chip {
  font-size: 11px;
  padding: 3px 8px;
  background: oklch(from var(--accent) l c h / 0.12);
  color: var(--accent);
  border-radius: 3px;
  border: 1px solid oklch(from var(--accent) l c h / 0.2);
}
.brief-axis-chip.more {
  background: var(--bg-3);
  color: var(--text-3);
  border-color: var(--line);
}
.brief-axis-empty { font-size: 11px; color: var(--text-3); opacity: 0.7; }
.brief-axis-toggle {
  width: 24px; height: 24px;
  display: grid; place-items: center;
  color: var(--text-3);
  font-size: 20px;
  font-weight: 300;
  border: 1px solid var(--line);
  border-radius: 3px;
  transition: all 0.15s;
}
.brief-axis.open .brief-axis-toggle {
  background: var(--bg-3);
  color: var(--text-1);
}

.brief-axis-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  padding: 4px 18px 18px;
  border-top: 1px dashed var(--line);
  padding-top: 14px;
  margin-top: 2px;
}
.brief-opt {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 14px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 4px;
  cursor: pointer;
  text-align: left;
  transition: all 0.15s;
  color: var(--text-1);
  font-family: inherit;
  min-height: 62px;
}
.brief-opt:hover {
  border-color: oklch(from var(--ac) l c h / 0.5);
  background: oklch(from var(--ac) l c h / 0.06);
}
.brief-opt.active {
  border-color: var(--ac);
  background: oklch(from var(--ac) l c h / 0.14);
  box-shadow: inset 0 0 0 1px oklch(from var(--ac) l c h / 0.4);
}
.brief-opt-head {
  display: flex; align-items: center; justify-content: space-between; gap: 6px;
}
.brief-opt-label { font-size: 13px; font-weight: 500; }
.brief-opt-sub {
  font-size: 10px;
  color: var(--text-3);
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.15s ease, opacity 0.15s ease;
}
.brief-opt:hover .brief-opt-sub,
.brief-opt.active .brief-opt-sub {
  max-height: 20px;
  opacity: 1;
}
.brief-opt-hot {
  font-size: 8px;
  letter-spacing: 0.12em;
  padding: 1px 5px;
  background: oklch(from var(--accent) l c h / 0.25);
  color: var(--accent);
  border-radius: 2px;
}
.brief-opt.active .brief-opt-hot {
  background: var(--bg-0);
  color: var(--ac);
}
.brief-opt-check {
  position: absolute;
  top: 8px; right: 8px;
  width: 16px; height: 16px;
  display: grid; place-items: center;
  background: var(--ac);
  color: var(--bg-0);
  border-radius: 50%;
  font-size: 10px;
  font-weight: 700;
}
.brief-opt.active .brief-opt-hot { display: none; }

/* ---------------- Agent Stream (우측) ---------------- */
.brief-agent-panel {
  display: flex;
  flex-direction: column;
  background: oklch(from var(--bg-1) l c h / 0.85);
  border: 1px solid var(--line);
  border-radius: 6px;
  position: sticky;
  top: 20px;
  height: calc(100vh - 180px);
  min-height: 520px;
  max-height: 780px;
  overflow: hidden;
}
.brief-agent-header {
  padding: 14px 16px 12px;
  border-bottom: 1px solid var(--line);
  background: var(--bg-1);
}
.brief-agent-title-row {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 10px;
}
.brief-agent-title {
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--text-1);
}
.brief-agent-sub {
  font-size: 10px; color: var(--text-3);
}
.brief-agent-roster {
  display: flex; gap: 6px; flex-wrap: wrap;
}
.brief-mini-agent {
  display: flex; align-items: center; gap: 5px;
  padding: 3px 8px 3px 5px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 20px;
  font-size: 10px;
  color: var(--text-3);
  transition: all 0.25s;
}
.brief-mini-agent.active {
  color: var(--ac);
  border-color: oklch(from var(--ac) l c h / 0.6);
  background: oklch(from var(--ac) l c h / 0.12);
  box-shadow: 0 0 12px oklch(from var(--ac) l c h / 0.3);
}
.brief-mini-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--text-3);
  transition: all 0.25s;
}
.brief-mini-agent.active .brief-mini-dot {
  background: var(--ac);
  box-shadow: 0 0 6px var(--ac);
  animation: pulse 1.2s ease-in-out infinite;
}

.brief-agent-stream {
  flex: 1;
  overflow-y: auto;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.brief-agent-stream::-webkit-scrollbar { width: 6px; }
.brief-agent-stream::-webkit-scrollbar-thumb {
  background: var(--bg-3); border-radius: 3px;
}
.brief-agent-empty {
  display: flex; flex-direction: column; align-items: center;
  gap: 14px;
  padding: 40px 20px;
  text-align: center;
  color: var(--text-3);
  border: 1px dashed var(--line);
  border-radius: 4px;
  margin: 20px 4px;
}
.brief-agent-empty-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}
.brief-agent-empty-txt {
  font-size: 12px; line-height: 1.6;
  display: flex; flex-direction: column; gap: 6px;
}
.brief-agent-empty-txt .mono {
  color: var(--accent);
  font-size: 10px;
  opacity: 0.75;
}

.brief-msg {
  padding: 10px 12px;
  background: var(--bg-2);
  border-left: 2px solid var(--ac);
  border-radius: 3px;
  animation: brief-msg-in 0.35s ease-out;
}
@keyframes brief-msg-in {
  from { opacity: 0; transform: translateX(8px); }
  to   { opacity: 1; transform: translateX(0); }
}
.brief-msg-flag {
  background: oklch(0.72 0.17 25 / 0.08);
  border-left-color: oklch(0.72 0.17 25);
}
.brief-msg-insight {
  background: oklch(from var(--ac) l c h / 0.08);
}
.brief-msg-head {
  display: flex; align-items: center; gap: 6px;
  margin-bottom: 5px;
  font-size: 10px;
}
.brief-msg-avatar {
  width: 16px; height: 16px;
  display: grid; place-items: center;
  color: var(--bg-0);
  font-size: 9px;
  font-weight: 700;
  border-radius: 50%;
}
.brief-msg-who { color: var(--ac); font-size: 10px; letter-spacing: 0.08em; }
.brief-msg-role { color: var(--text-3); font-size: 10px; }
.brief-msg-time { color: var(--text-3); font-size: 10px; margin-left: auto; opacity: 0.7; }
.brief-msg-badge {
  font-size: 8px;
  letter-spacing: 0.12em;
  padding: 1px 5px;
  border-radius: 2px;
  background: oklch(from var(--ac) l c h / 0.2);
  color: var(--ac);
  font-family: "Nanum Gothic Coding", monospace;
}
.brief-msg-flag .brief-msg-badge {
  background: oklch(0.72 0.17 25 / 0.2);
  color: oklch(0.78 0.17 25);
}
.brief-msg-body {
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--text-1);
}
.brief-msg-ref {
  margin-top: 6px;
  font-size: 9.5px;
  color: var(--text-3);
  opacity: 0.65;
  letter-spacing: 0.05em;
}

.brief-agent-input {
  border-top: 1px solid var(--line);
  padding: 10px 14px;
  background: var(--bg-1);
}

/* ---------------- Summary Bar (하단 sticky) ---------------- */
.brief-summary {
  position: sticky;
  bottom: 0;
  padding: 18px 32px 22px;
  background: oklch(from var(--bg-1) l c h / 0.95);
  backdrop-filter: blur(16px);
  border-top: 1px solid var(--line);
  z-index: 10;
}
.brief-summary-top {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  align-items: flex-end;
  margin-bottom: 14px;
  max-width: 1600px;
  margin-left: auto;
  margin-right: auto;
}
.brief-summary-left { min-width: 0; }
.brief-summary-eyebrow {
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 8px;
}
.brief-summary-headline {
  font-size: 16px;
  line-height: 1.5;
  color: var(--text-1);
  min-height: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.brief-summary-placeholder {
  color: var(--text-3);
  font-style: italic;
  font-size: 14px;
}
.brief-summary-chunk {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}
.brief-summary-key {
  font-size: 10px;
  color: var(--text-3);
  letter-spacing: 0.1em;
}
.brief-summary-val {
  font-size: 14px;
  color: var(--text-1);
  font-weight: 500;
}
.brief-summary-sep { color: var(--text-3); opacity: 0.4; margin: 0 4px; }

.brief-summary-actions {
  display: flex; gap: 10px;
}
.brief-btn-ghost, .brief-btn-primary {
  font-family: inherit;
  cursor: pointer;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 12px 20px;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.15s;
}
.brief-btn-ghost {
  background: transparent;
  color: var(--text-2);
}
.brief-btn-ghost:hover {
  color: var(--text-1);
  border-color: var(--line-strong);
  background: var(--bg-2);
}
.brief-btn-primary {
  background: var(--accent);
  color: var(--bg-0);
  border-color: var(--accent);
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 24px;
  box-shadow: 0 4px 20px oklch(from var(--accent) l c h / 0.35);
}
.brief-btn-primary:hover {
  background: oklch(from var(--accent) calc(l + 0.05) c h);
  transform: translateY(-1px);
  box-shadow: 0 6px 24px oklch(from var(--accent) l c h / 0.45);
}
.brief-btn-primary.disabled {
  background: var(--bg-3);
  color: var(--text-3);
  border-color: var(--line);
  cursor: not-allowed;
  box-shadow: none;
  opacity: 0.6;
}
.brief-btn-primary.disabled:hover { transform: none; }
.brief-btn-primary-arrow { font-family: "Nanum Gothic Coding", monospace; font-size: 15px; }

.brief-summary-scores {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 1600px;
  margin: 0 auto;
}
.brief-score {}
.brief-score-head {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 6px;
}
.brief-score-label {
  font-size: 11px;
  color: var(--text-2);
  letter-spacing: 0.05em;
}
.brief-score-val {
  font-size: 18px;
  color: var(--text-1);
  font-weight: 500;
}
.brief-score-unit { font-size: 10px; color: var(--text-3); margin-left: 2px; }
.brief-score-track {
  position: relative;
  height: 6px;
  background: var(--bg-3);
  border-radius: 3px;
  overflow: hidden;
}
.brief-score-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.45s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.brief-score-up .brief-score-fill {
  background: linear-gradient(90deg, oklch(from var(--accent) l c h / 0.4), var(--accent));
}
.brief-score-up .brief-score-val { color: var(--accent); }
.brief-score-warn .brief-score-fill {
  background: linear-gradient(90deg, oklch(0.75 0.15 65 / 0.4), oklch(0.75 0.15 65));
}
.brief-score-warn .brief-score-val { color: oklch(0.78 0.15 65); }
.brief-score-down .brief-score-fill {
  background: linear-gradient(90deg, oklch(0.72 0.17 25 / 0.4), oklch(0.72 0.17 25));
}
.brief-score-down .brief-score-val { color: oklch(0.72 0.17 25); }
.brief-score-ticks {
  position: absolute; inset: 0;
  pointer-events: none;
}
.brief-score-ticks span {
  position: absolute; top: 0; bottom: 0;
  width: 1px;
  background: oklch(from var(--bg-0) l c h / 0.4);
}
.brief-score-legend {
  margin-top: 0;
  font-size: 9.5px;
  color: var(--text-3);
  letter-spacing: 0.03em;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.15s ease, opacity 0.15s ease, margin-top 0.15s ease;
}
.brief-score:hover .brief-score-legend {
  max-height: 16px;
  opacity: 1;
  margin-top: 5px;
}

.brief-summary-missing {
  max-width: 1600px;
  margin: 12px auto 0;
  padding: 10px 14px;
  background: oklch(0.72 0.17 25 / 0.08);
  border: 1px solid oklch(0.72 0.17 25 / 0.25);
  border-radius: 4px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  color: oklch(0.85 0.12 25);
}
.brief-summary-missing .mono {
  font-size: 10px;
  letter-spacing: 0.12em;
}
.brief-summary-missing-chip {
  padding: 3px 8px;
  background: oklch(0.72 0.17 25 / 0.15);
  border-radius: 3px;
  font-size: 11px;
}

/* ---------------- Responsive ---------------- */
@media (max-width: 1200px) {
  .brief-workspace { grid-template-columns: 1fr; }
  .brief-agent-panel { position: static; height: 480px; }
  .brief-summary-scores { grid-template-columns: repeat(2, 1fr); }
  .brief-axis-head { grid-template-columns: 36px 1fr 32px; }
  .brief-axis-lead, .brief-axis-summary { display: none; }
  .brief-axis-grid { grid-template-columns: repeat(2, 1fr); }
}