Create style.css

front_end/style.css

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+/* ══════════════════════════════════════════════
+   WHATREPO — style.css  v3
+   ══════════════════════════════════════════════ */
+
+/* ── Variables ── */
+:root {
+  --bg:           #08090c;
+  --surface:      #0f1117;
+  --surface2:     #141720;
+  --surface3:     #1a1f2e;
+  --border:       #1e2535;
+  --border2:      #252d40;
+  --accent:       #3b82f6;
+  --accent-glow:  rgba(59, 130, 246, 0.15);
+  --accent-soft:  rgba(59, 130, 246, 0.08);
+  --accent2:      #60a5fa;
+  --warn:         #f59e0b;
+  --warn-bg:      rgba(245, 158, 11, 0.08);
+  --red:          #f87171;
+  --green:        #34d399;
+  --text:         #e2e8f4;
+  --text-dim:     #94a3b8;
+  --muted:        #475569;
+  --font-mono:    'Space Mono', monospace;
+  --font-head:    'Syne', sans-serif;
+  --header-h:     58px;
+  --footer-h:     86px;
+  --max-chat:     800px;
+  --radius:       10px;
+  --radius-sm:    6px;
+}
+
+/* ── Reset ── */
+*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
+html { height: 100%; }
+
+body {
+  background: var(--bg);
+  color: var(--text);
+  font-family: var(--font-mono);
+  display: flex;
+  flex-direction: column;
+  min-height: 100vh;
+  overflow-x: hidden;
+  -webkit-font-smoothing: antialiased;
+}
+
+/* ══════════════ HEADER ══════════════ */
+#header {
+  position: fixed;
+  top: 0; left: 0; right: 0;
+  height: var(--header-h);
+  background: rgba(8, 9, 12, 0.8);
+  backdrop-filter: blur(20px);
+  -webkit-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;
+}
+
+.logo {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+}
+
+.logo-mark svg { display: block; }
+
+.logo-text {
+  font-family: var(--font-head);
+  font-weight: 800;
+  font-size: 0.95rem;
+  letter-spacing: 0.25em;
+  color: var(--text);
+}
+
+.status-pill {
+  display: flex;
+  align-items: center;
+  gap: 7px;
+  background: var(--surface);
+  border: 1px solid var(--border);
+  border-radius: 100px;
+  padding: 5px 12px 5px 9px;
+  font-size: 0.68rem;
+  letter-spacing: 0.08em;
+  text-transform: uppercase;
+  color: var(--text-dim);
+  transition: border-color 0.3s, background 0.3s;
+}
+
+.status-dot {
+  width: 6px; height: 6px;
+  border-radius: 50%;
+  background: var(--muted);
+  transition: background 0.4s, box-shadow 0.4s;
+  flex-shrink: 0;
+}
+
+.status-dot.active {
+  background: var(--accent);
+  box-shadow: 0 0 6px var(--accent);
+  animation: pulse 1.6s ease-in-out infinite;
+}
+
+.status-dot.done { background: var(--green); }
+.status-dot.chat { background: var(--accent); box-shadow: 0 0 6px var(--accent); }
+
+@keyframes pulse {
+  0%, 100% { opacity: 1; }
+  50%       { opacity: 0.35; }
+}
+
+/* ══════════════ WARNING BANNER ══════════════ */
+.warning-banner {
+  position: fixed;
+  top: var(--header-h);
+  left: 0; right: 0;
+  background: var(--warn-bg);
+  border-bottom: 1px solid rgba(245, 158, 11, 0.2);
+  color: var(--warn);
+  font-size: 0.75rem;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 9px;
+  padding: 9px 20px;
+  z-index: 190;
+  letter-spacing: 0.04em;
+  animation: bannerIn 0.35s cubic-bezier(0.4,0,0.2,1);
+}
+
+.warning-banner.hidden { display: none; }
+.warn-icon { font-size: 0.95rem; }
+
+#dismissWarning {
+  margin-left: auto;
+  background: none;
+  border: none;
+  color: var(--warn);
+  cursor: pointer;
+  font-size: 0.85rem;
+  opacity: 0.5;
+  transition: opacity 0.2s;
+  line-height: 1;
+  padding: 2px 4px;
+}
+#dismissWarning:hover { opacity: 1; }
+
+@keyframes bannerIn {
+  from { transform: translateY(-100%); opacity: 0; }
+  to   { transform: translateY(0);     opacity: 1; }
+}
+
+/* ══════════════ MAIN ══════════════ */
+main {
+  flex: 1;
+  margin-top: var(--header-h);
+  position: relative;
+}
+
+.page {
+  position: absolute;
+  inset: 0;
+  opacity: 0;
+  pointer-events: none;
+  transition: opacity 0.45s cubic-bezier(0.4, 0, 0.2, 1);
+  display: flex;
+  flex-direction: column;
+}
+
+.page.active {
+  opacity: 1;
+  pointer-events: all;
+  position: relative;
+  min-height: calc(100vh - var(--header-h));
+}
+
+/* ══════════════ PAGE 1: LANDING ══════════════ */
+#landingPage {
+  align-items: center;
+  justify-content: center;
+  overflow: hidden;
+}
+
+.noise-overlay {
+  position: absolute;
+  inset: 0;
+  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
+  background-size: 200px;
+  pointer-events: none;
+  z-index: 1;
+  opacity: 0.4;
+}
+
+.grid-bg {
+  position: absolute;
+  inset: 0;
+  background-image:
+    linear-gradient(var(--border) 1px, transparent 1px),
+    linear-gradient(90deg, var(--border) 1px, transparent 1px);
+  background-size: 56px 56px;
+  opacity: 0.25;
+  pointer-events: none;
+  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 30%, transparent 100%);
+  z-index: 1;
+}
+
+.glow-orb {
+  position: absolute;
+  border-radius: 50%;
+  pointer-events: none;
+  z-index: 1;
+  filter: blur(80px);
+  opacity: 0.35;
+}
+
+.orb-1 {
+  width: 500px; height: 500px;
+  background: radial-gradient(circle, rgba(59,130,246,0.4) 0%, transparent 70%);
+  top: -120px; left: -80px;
+  animation: orbDrift 12s ease-in-out infinite alternate;
+}
+
+.orb-2 {
+  width: 400px; height: 400px;
+  background: radial-gradient(circle, rgba(99,102,241,0.3) 0%, transparent 70%);
+  bottom: -80px; right: -60px;
+  animation: orbDrift 16s ease-in-out infinite alternate-reverse;
+}
+
+@keyframes orbDrift {
+  from { transform: translate(0, 0) scale(1); }
+  to   { transform: translate(30px, 20px) scale(1.08); }
+}
+
+.landing-inner {
+  position: relative;
+  z-index: 2;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 0;
+  padding: 60px 24px 80px;
+  text-align: center;
+  max-width: 720px;
+  width: 100%;
+}
+
+.hero-eyebrow {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  font-size: 0.7rem;
+  letter-spacing: 0.2em;
+  text-transform: uppercase;
+  color: var(--accent2);
+  margin-bottom: 28px;
+  animation: fadeUp 0.6s ease both;
+}
+
+.eyebrow-dot {
+  width: 5px; height: 5px;
+  border-radius: 50%;
+  background: var(--accent);
+  box-shadow: 0 0 8px var(--accent);
+}
+
+.hero-title {
+  font-family: var(--font-head);
+  font-weight: 800;
+  line-height: 1.02;
+  letter-spacing: -0.01em;
+  margin-bottom: 24px;
+  display: flex;
+  flex-direction: column;
+  gap: 0;
+}
+
+.title-line {
+  font-size: clamp(3rem, 8vw, 5.5rem);
+  color: var(--text);
+  display: block;
+  animation: fadeUp 0.6s ease both;
+}
+
+.title-line:nth-child(1) { animation-delay: 0.05s; }
+.title-line:nth-child(2) { animation-delay: 0.12s; }
+.title-line:nth-child(3) { animation-delay: 0.19s; }
+
+.accent-line {
+  color: var(--accent);
+  position: relative;
+  display: inline-block;
+}
+
+.hero-sub {
+  color: var(--text-dim);
+  font-size: 0.88rem;
+  line-height: 1.7;
+  max-width: 460px;
+  letter-spacing: 0.01em;
+  margin-bottom: 40px;
+  animation: fadeUp 0.6s ease 0.25s both;
+}
+
+.input-card {
+  width: min(620px, 90vw);
+  background: var(--surface);
+  border: 1px solid var(--border2);
+  border-radius: var(--radius);
+  padding: 6px 6px 6px 0;
+  display: flex;
+  align-items: center;
+  gap: 0;
+  transition: border-color 0.25s, box-shadow 0.25s;
+  animation: fadeUp 0.6s ease 0.32s both;
+  margin-bottom: 20px;
+}
+
+.input-card:focus-within {
+  border-color: var(--accent);
+  box-shadow: 0 0 0 3px var(--accent-glow), 0 8px 40px rgba(59,130,246,0.08);
+}
+
+.input-wrap {
+  flex: 1;
+  display: flex;
+  align-items: center;
+  gap: 0;
+}
+
+.input-icon {
+  padding: 0 12px 0 16px;
+  color: var(--accent);
+  display: flex;
+  align-items: center;
+  flex-shrink: 0;
+}
+
+input, textarea {
+  -webkit-user-select: auto;
+  user-select: auto;
+  cursor: text;
+}
+
+.input-wrap input {
+  flex: 1;
+  background: none;
+  border: none;
+  padding: 13px 12px 13px 0;
+  color: var(--text);
+  font-family: var(--font-mono);
+  font-size: 0.84rem;
+  outline: none;
+  letter-spacing: 0.01em;
+}
+
+.input-wrap input::placeholder { color: var(--muted); }
+
+.analyse-btn {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  background: var(--accent);
+  color: #fff;
+  border: none;
+  border-radius: 7px;
+  padding: 11px 20px;
+  font-family: var(--font-head);
+  font-weight: 700;
+  font-size: 0.82rem;
+  letter-spacing: 0.08em;
+  cursor: pointer;
+  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
+  flex-shrink: 0;
+  white-space: nowrap;
+}
+
+.analyse-btn:hover {
+  background: var(--accent2);
+  transform: translateY(-1px);
+  box-shadow: 0 6px 24px rgba(59,130,246,0.35);
+}
+
+.analyse-btn:active { transform: translateY(0); }
+
+.btn-arrow-icon {
+  transition: transform 0.2s;
+}
+
+.analyse-btn:hover .btn-arrow-icon { transform: translateX(2px); }
+
+.landing-hints {
+  display: flex;
+  flex-wrap: wrap;
+  justify-content: center;
+  gap: 8px;
+  animation: fadeUp 0.6s ease 0.4s both;
+}
+
+.hint-chip {
+  background: var(--surface);
+  border: 1px solid var(--border);
+  border-radius: 100px;
+  padding: 5px 13px;
+  font-size: 0.72rem;
+  color: var(--text-dim);
+  letter-spacing: 0.03em;
+  transition: border-color 0.2s, color 0.2s;
+  cursor: default;
+}
+
+.hint-chip:hover {
+  border-color: var(--border2);
+  color: var(--text);
+}
+
+@keyframes fadeUp {
+  from { opacity: 0; transform: translateY(18px); }
+  to   { opacity: 1; transform: translateY(0); }
+}
+
+/* ══════════════ PAGE 2: PROCESSING ══════════════ */
+#processingPage {
+  align-items: center;
+  justify-content: center;
+}
+
+.processing-inner {
+  display: flex;
+  flex-direction: column;
+  align-items: stretch;
+  gap: 24px;
+  padding: 48px 24px;
+  width: min(560px, 92vw);
+}
+
+.processing-header {
+  display: flex;
+  align-items: center;
+  gap: 18px;
+}
+
+.proc-spinner {
+  width: 44px;
+  height: 44px;
+  flex-shrink: 0;
+}
+
+.spinner-ring {
+  width: 100%;
+  height: 100%;
+  animation: spinRing 1.1s linear infinite;
+  transform-origin: center;
+}
+
+@keyframes spinRing {
+  to { transform: rotate(360deg); }
+}
+
+.proc-meta {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+}
+
+.proc-title {
+  font-family: var(--font-head);
+  font-weight: 700;
+  font-size: 1.05rem;
+  color: var(--text);
+  letter-spacing: 0.05em;
+}
+
+.proc-subtitle {
+  font-size: 0.73rem;
+  color: var(--muted);
+  letter-spacing: 0.06em;
+  text-transform: uppercase;
+  transition: opacity 0.3s;
+}
+
+/* ── Steps container ── */
+.steps-container {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+
+/* ── Step box ── */
+.step-box {
+  display: flex;
+  align-items: center;
+  background: var(--surface);
+  border: 1px solid var(--border);
+  border-radius: var(--radius);
+  padding: 14px 18px;
+  opacity: 0;
+  transform: translateY(8px);
+  animation: stepIn 0.3s cubic-bezier(0.4, 0, 0.2, 1) forwards;
+  /* Only transition the properties we animate manually via JS */
+  transition: height 0.38s cubic-bezier(0.4, 0, 0.2, 1),
+              padding-top 0.38s cubic-bezier(0.4, 0, 0.2, 1),
+              padding-bottom 0.38s cubic-bezier(0.4, 0, 0.2, 1),
+              background 0.3s ease,
+              border-color 0.3s ease;
+  overflow: hidden;
+}
+
+.step-box.done-green {
+  background: rgba(52, 211, 153, 0.04);
+  border-color: rgba(52, 211, 153, 0.18);
+}
+
+.step-box.warn-yellow {
+  background: var(--warn-bg);
+  border-color: rgba(245, 158, 11, 0.22);
+}
+
+.step-box.err-red {
+  background: rgba(248, 113, 113, 0.05);
+  border-color: rgba(248, 113, 113, 0.22);
+}
+
+/* ── Step title row ── */
+.step-title {
+  font-family: var(--font-head);
+  font-weight: 600;
+  font-size: 0.82rem;
+  letter-spacing: 0.05em;
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  height: 22px; /* fixed so collapsed height = padding*2 + 22 = ~46 */
+  /* margin-bottom: 10px; */
+}
+
+.step-box .sub-items {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+  transition: opacity 0.2s;
+}
+
+/* ── Step icon wrapper ── */
+.step-icon-wrap {
+  width: 16px;
+  height: 16px;
+  flex-shrink: 0;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+/* CSS ring spinner — replaces the old character spinner */
+.step-ring-spinner {
+  display: block;
+  width: 13px;
+  height: 13px;
+  border: 1.5px solid var(--border2);
+  border-top-color: var(--accent);
+  border-radius: 50%;
+  animation: spinRing 0.7s linear infinite;
+}
+
+/* Status icon that replaces spinner when done */
+.step-status-icon {
+  font-size: 11px;
+  line-height: 1;
+  font-weight: 700;
+  display: block;
+}
+.step-status-icon.green { color: var(--green); }
+.step-status-icon.warn  { color: var(--warn); }
+.step-status-icon.err   { color: var(--red); }
+
+/* Collapsed badge (Done / Warning / Error label) */
+.step-collapsed-badge {
+  font-size: 0.67rem;
+  letter-spacing: 0.04em;
+  margin-left: 4px;
+  opacity: 0;
+  transition: opacity 0.25s ease 0.25s;
+  font-family: var(--font-mono);
+}
+
+/* Badge becomes visible only when height has settled */
+.step-box.done-green  .step-collapsed-badge { color: var(--green); }
+.step-box.warn-yellow .step-collapsed-badge { color: var(--warn);  }
+.step-box.err-red     .step-collapsed-badge { color: var(--red);   }
+
+/* We reveal badge via JS after transition ends, not via .collapsed class */
+.step-collapsed-badge.visible { opacity: 1; }
+
+@keyframes stepIn {
+  to { opacity: 1; transform: translateY(0); }
+}
+
+.sub-item {
+  display: flex;
+  align-items: center;
+  gap: 9px;
+  font-size: 0.73rem;
+  color: var(--muted);
+}
+
+.sub-item.done { color: var(--green); }
+
+.sub-dot {
+  width: 5px; height: 5px;
+  border-radius: 50%;
+  background: var(--muted);
+  flex-shrink: 0;
+}
+
+.sub-item.done .sub-dot { background: var(--green); }
+
+/* ── Processing action card (error / warning gate) ── */
+.proc-action-card {
+  display: flex;
+  align-items: flex-start;
+  gap: 14px;
+  border-radius: var(--radius);
+  padding: 18px 20px;
+  opacity: 0;
+  transform: translateY(8px);
+  animation: stepIn 0.35s 0.1s cubic-bezier(0.4, 0, 0.2, 1) forwards;
+  margin-top: 4px;
+}
+
+.proc-action-card.proc-action-error {
+  background: rgba(248, 113, 113, 0.06);
+  border: 1px solid rgba(248, 113, 113, 0.25);
+}
+
+.proc-action-card.proc-action-warning {
+  background: var(--warn-bg);
+  border: 1px solid rgba(245, 158, 11, 0.25);
+}
+
+.proc-action-icon {
+  font-size: 1.1rem;
+  flex-shrink: 0;
+  margin-top: 2px;
+}
+
+.proc-action-card.proc-action-error   .proc-action-icon { color: var(--red);  }
+.proc-action-card.proc-action-warning .proc-action-icon { color: var(--warn); }
+
+.proc-action-body {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+}
+
+.proc-action-title {
+  font-family: var(--font-head);
+  font-weight: 700;
+  font-size: 0.88rem;
+  letter-spacing: 0.04em;
+}
+
+.proc-action-card.proc-action-error   .proc-action-title { color: var(--red);  }
+.proc-action-card.proc-action-warning .proc-action-title { color: var(--warn); }
+
+.proc-action-desc {
+  font-size: 0.75rem;
+  color: var(--text-dim);
+  line-height: 1.6;
+  letter-spacing: 0.01em;
+}
+
+.proc-action-btn {
+  margin-top: 10px;
+  align-self: flex-start;
+  border: none;
+  border-radius: var(--radius-sm);
+  padding: 9px 18px;
+  font-family: var(--font-head);
+  font-weight: 700;
+  font-size: 0.78rem;
+  letter-spacing: 0.06em;
+  cursor: pointer;
+  transition: opacity 0.2s, transform 0.15s, box-shadow 0.2s;
+}
+
+.proc-action-btn:hover { opacity: 0.88; transform: translateY(-1px); }
+.proc-action-btn:active { transform: translateY(0); }
+
+.proc-btn-error {
+  background: rgba(248, 113, 113, 0.15);
+  color: var(--red);
+  border: 1px solid rgba(248, 113, 113, 0.3);
+}
+
+.proc-btn-error:hover { box-shadow: 0 4px 16px rgba(248, 113, 113, 0.15); }
+
+.proc-btn-warning {
+  background: rgba(245, 158, 11, 0.12);
+  color: var(--warn);
+  border: 1px solid rgba(245, 158, 11, 0.3);
+}
+
+.proc-btn-warning:hover { box-shadow: 0 4px 16px rgba(245, 158, 11, 0.12); }
+
+/* ══════════════ PAGE 3: CHAT ══════════════ */
+#chatPage {
+  align-items: stretch;
+}
+
+.chat-messages {
+  flex: 1;
+  width: 100%;
+  max-width: var(--max-chat);
+  margin: 0 auto;
+  padding: 32px 28px calc(var(--footer-h) + 40px);
+  display: flex;
+  flex-direction: column;
+  gap: 24px;
+  overflow-y: auto;
+  height: calc(100vh - var(--header-h));
+  scroll-behavior: smooth;
+}
+
+/* Scrollbar */
+.chat-messages::-webkit-scrollbar { width: 4px; }
+.chat-messages::-webkit-scrollbar-track { background: transparent; }
+.chat-messages::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 4px; }
+
+/* Welcome state */
+.chat-welcome {
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  text-align: center;
+  padding: 80px 20px;
+  gap: 12px;
+  animation: fadeUp 0.5s ease both;
+}
+
+.welcome-icon {
+  font-size: 2rem;
+  margin-bottom: 8px;
+  opacity: 0.6;
+}
+
+.welcome-title {
+  font-family: var(--font-head);
+  font-weight: 700;
+  font-size: clamp(1.5rem, 4vw, 2.2rem);
+  color: var(--text);
+  letter-spacing: 0.02em;
+}
+
+.welcome-sub {
+  color: var(--muted);
+  font-size: 0.78rem;
+  letter-spacing: 0.06em;
+}
+
+.welcome-chips {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+  justify-content: center;
+  margin-top: 20px;
+}
+
+.welcome-chip {
+  background: var(--surface);
+  border: 1px solid var(--border2);
+  border-radius: 8px;
+  padding: 9px 16px;
+  font-size: 0.75rem;
+  color: var(--text-dim);
+  cursor: pointer;
+  transition: border-color 0.2s, color 0.2s, background 0.2s, transform 0.15s;
+  letter-spacing: 0.02em;
+}
+
+.welcome-chip:hover {
+  border-color: var(--accent);
+  color: var(--accent2);
+  background: var(--accent-soft);
+  transform: translateY(-1px);
+}
+
+/* ── Message groups ── */
+.msg-group {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+  animation: msgIn 0.35s cubic-bezier(0.4, 0, 0.2, 1) both;
+}
+
+.msg-group.user { align-items: flex-end; }
+.msg-group.bot  { align-items: flex-start; }
+
+@keyframes msgIn {
+  from { opacity: 0; transform: translateY(10px); }
+  to   { opacity: 1; transform: translateY(0); }
+}
+
+.msg-sender {
+  font-size: 0.65rem;
+  letter-spacing: 0.1em;
+  text-transform: uppercase;
+  color: var(--muted);
+  padding: 0 4px;
+}
+
+/* ── User bubble: stays boxed ── */
+.msg-bubble.user {
+  max-width: min(520px, 88%);
+  padding: 11px 16px;
+  border-radius: var(--radius);
+  border-bottom-right-radius: 3px;
+  font-size: 0.87rem;
+  line-height: 1.7;
+  background: var(--accent-soft);
+  border: 1px solid rgba(59, 130, 246, 0.2);
+  color: var(--text);
+  word-break: break-word;
+  -webkit-user-select: text;
+  user-select: text;
+  cursor: text;
+}
+
+/* ── Bot bubble: transparent, no border ── */
+.msg-bubble.bot {
+  background: transparent;
+  border: none;
+  color: var(--text);
+  font-size: 0.87rem;
+  line-height: 1.75;
+  word-break: break-word;
+  -webkit-user-select: text;
+  user-select: text;
+  cursor: text;
+  padding: 2px 0;
+  width: 100%;
+}
+
+/* ── Markdown elements inside bot bubble ── */
+.msg-bubble.bot p {
+  margin-bottom: 0.75em;
+}
+.msg-bubble.bot p:last-child {
+  margin-bottom: 0;
+}
+
+.msg-bubble.bot h1,
+.msg-bubble.bot h2,
+.msg-bubble.bot h3,
+.msg-bubble.bot h4 {
+  font-family: var(--font-head);
+  font-weight: 700;
+  color: var(--text);
+  margin: 1.1em 0 0.45em;
+  letter-spacing: 0.02em;
+}
+.msg-bubble.bot h1 { font-size: 1.2rem; }
+.msg-bubble.bot h2 { font-size: 1.05rem; }
+.msg-bubble.bot h3 { font-size: 0.95rem; }
+
+.msg-bubble.bot ul,
+.msg-bubble.bot ol {
+  padding-left: 1.4em;
+  margin-bottom: 0.75em;
+}
+.msg-bubble.bot li { margin-bottom: 0.25em; }
+
+.msg-bubble.bot strong { color: var(--text); font-weight: 700; }
+.msg-bubble.bot em     { color: var(--text-dim); }
+
+.msg-bubble.bot a {
+  color: var(--accent2);
+  text-decoration: underline;
+  text-underline-offset: 3px;
+}
+
+.msg-bubble.bot blockquote {
+  border-left: 3px solid var(--border2);
+  padding-left: 12px;
+  color: var(--text-dim);
+  margin: 0.75em 0;
+  font-style: italic;
+}
+
+/* Inline code */
+.msg-bubble.bot :not(pre) > code {
+  font-family: var(--font-mono);
+  background: var(--surface3);
+  border: 1px solid var(--border2);
+  border-radius: 4px;
+  padding: 1px 6px;
+  font-size: 0.8em;
+  color: var(--accent2);
+  word-break: break-all;
+}
+
+/* ── Code block wrapper ── */
+.code-block-wrap {
+  margin: 10px 0;
+  border: 1px solid var(--border2);
+  border-radius: var(--radius);
+  overflow: hidden;
+  background: var(--surface2);
+}
+
+.code-block-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 7px 14px;
+  background: var(--surface3);
+  border-bottom: 1px solid var(--border);
+}
+
+.code-lang-label {
+  font-size: 0.67rem;
+  color: var(--muted);
+  letter-spacing: 0.08em;
+  text-transform: uppercase;
+  font-family: var(--font-mono);
+}
+
+.code-copy-btn {
+  display: inline-flex;
+  align-items: center;
+  gap: 5px;
+  background: none;
+  border: 1px solid var(--border2);
+  border-radius: 4px;
+  padding: 3px 9px;
+  font-size: 0.67rem;
+  font-family: var(--font-mono);
+  color: var(--muted);
+  cursor: pointer;
+  letter-spacing: 0.04em;
+  transition: color 0.2s, border-color 0.2s, background 0.2s;
+}
+
+.code-copy-btn:hover {
+  color: var(--text-dim);
+  border-color: var(--accent);
+  background: var(--accent-soft);
+}
+
+.msg-bubble.bot pre {
+  margin: 0;
+  padding: 14px 16px;
+  overflow-x: auto;
+  line-height: 1.6;
+  border: none;
+  border-radius: 0;
+  background: transparent;
+}
+
+.msg-bubble.bot pre code {
+  font-family: var(--font-mono);
+  font-size: 0.79rem;
+  background: none;
+  border: none;
+  padding: 0;
+  color: var(--text);
+  word-break: normal;
+}
+
+/* ── Copy response button ── */
+.msg-copy-btn {
+  display: inline-flex;
+  align-items: center;
+  gap: 5px;
+  background: none;
+  border: 1px solid var(--border);
+  border-radius: 5px;
+  padding: 4px 10px;
+  font-size: 0.65rem;
+  font-family: var(--font-mono);
+  color: var(--muted);
+  cursor: pointer;
+  letter-spacing: 0.04em;
+  transition: color 0.2s, border-color 0.2s;
+  margin-top: 2px;
+  align-self: flex-start;
+}
+
+.msg-copy-btn:hover {
+  color: var(--text-dim);
+  border-color: var(--border2);
+}
+
+.msg-meta {
+  font-size: 0.62rem;
+  color: var(--muted);
+  padding: 0 4px;
+  letter-spacing: 0.04em;
+}
+
+/* ══════════════ THINKING / TOOL-USE SECTION ══════════════ */
+.thinking-wrap {
+  display: flex;
+  flex-direction: column;
+  gap: 0;
+  align-self: flex-start;
+  /* Indent + left accent bar to distinguish from main response */
+  padding-left: 14px;
+  border-left: 2px solid var(--border2);
+  margin-left: 2px;
+  width: calc(100% - 16px);
+  animation: msgIn 0.35s cubic-bezier(0.4, 0, 0.2, 1) both;
+}
+
+.thinking-toggle {
+  display: inline-flex;
+  align-items: center;
+  gap: 7px;
+  padding: 5px 0;
+  background: transparent;
+  border: none;
+  font-size: 0.7rem;
+  color: var(--muted);
+  cursor: pointer;
+  transition: color 0.2s;
+  user-select: none;
+  letter-spacing: 0.04em;
+  width: 100%;
+  text-align: left;
+}
+
+.thinking-toggle:hover { color: var(--text-dim); }
+
+.thinking-toggle.active { color: var(--accent2); }
+
+.thinking-spinner {
+  width: 12px;
+  height: 12px;
+  flex-shrink: 0;
+}
+
+.thinking-spinner svg {
+  animation: spinRing 0.9s linear infinite;
+  display: block;
+}
+
+.thinking-spinner.done svg { animation: none; }
+
+.thinking-chevron {
+  margin-left: auto;
+  font-size: 0.65rem;
+  transition: transform 0.25s ease;
+  opacity: 0.45;
+}
+
+.thinking-toggle.open .thinking-chevron { transform: rotate(180deg); }
+
+/* Panel */
+.thinking-steps-panel {
+  overflow: hidden;
+  max-height: 0;
+  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.25s ease;
+  opacity: 0;
+}
+
+.thinking-steps-panel.open {
+  max-height: 400px;
+  opacity: 1;
+}
+
+.thinking-steps-inner {
+  padding: 8px 0 10px;
+  display: flex;
+  flex-direction: column;
+  gap: 7px;
+  overflow-y: auto;
+  max-height: 380px;
+}
+
+/* Individual thinking step */
+.thinking-step {
+  display: flex;
+  align-items: flex-start;
+  gap: 8px;
+  font-size: 0.75rem;
+  color: #ffffff;
+  line-height: 1.55;
+  opacity: 0.75;
+}
+
+.thinking-step-dot {
+  width: 4px;
+  height: 4px;
+  border-radius: 50%;
+  background: var(--muted);
+  flex-shrink: 0;
+  margin-top: 6px;
+}
+
+.thinking-step-text {
+  flex: 1;
+}
+
+.thinking-step.current {
+  color: var(--text-dim);
+  opacity: 1;
+}
+
+.thinking-step.current .thinking-step-dot {
+  background: var(--accent);
+  box-shadow: 0 0 4px var(--accent);
+}
+
+.thinking-step.done-step {
+  opacity: 0.55;
+}
+
+.thinking-step.done-step .thinking-step-dot {
+  background: var(--green);
+}
+
+/* ══════════════ FOOTER ══════════════ */
+#footer {
+  position: fixed;
+  bottom: 0; left: 0; right: 0;
+  padding: 12px 20px 14px;
+  background: rgba(8, 9, 12, 0.85);
+  backdrop-filter: blur(20px);
+  -webkit-backdrop-filter: blur(20px);
+  border-top: 1px solid var(--border);
+  z-index: 200;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 6px;
+  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
+}
+
+#footer.hidden { display: none; }
+
+.chat-input-card {
+  width: min(var(--max-chat), calc(100vw - 40px));
+  background: var(--surface);
+  border: 1px solid var(--border2);
+  border-radius: var(--radius);
+  display: flex;
+  align-items: flex-end;
+  gap: 0;
+  transition: border-color 0.25s, box-shadow 0.25s;
+  padding: 4px 4px 4px 0;
+}
+
+.chat-input-card:focus-within {
+  border-color: var(--accent);
+  box-shadow: 0 0 0 3px var(--accent-glow);
+}
+
+#chatInput {
+  flex: 1;
+  background: none;
+  border: none;
+  padding: 12px 14px;
+  color: var(--text);
+  font-family: var(--font-mono);
+  font-size: 0.85rem;
+  outline: none;
+  resize: none;
+  line-height: 1.55;
+  max-height: 160px;
+  overflow-y: auto;
+  letter-spacing: 0.01em;
+}
+
+#chatInput::placeholder { color: var(--muted); }
+
+.send-btn {
+  background: var(--accent);
+  color: #fff;
+  border: none;
+  border-radius: 7px;
+  width: 38px;
+  height: 38px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  cursor: pointer;
+  flex-shrink: 0;
+  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
+  margin: 5px 0px;
+}
+
+.send-btn:hover {
+  background: var(--accent2);
+  transform: scale(1.05);
+  box-shadow: 0 4px 16px rgba(59,130,246,0.35);
+}
+
+.send-btn:active { transform: scale(0.96); }
+
+.footer-hint {
+  font-size: 0.62rem;
+  color: var(--muted);
+  letter-spacing: 0.06em;
+}
+
+kbd {
+  background: var(--surface2);
+  border: 1px solid var(--border2);
+  border-radius: 3px;
+  padding: 1px 5px;
+  font-family: var(--font-mono);
+  font-size: 0.6rem;
+  color: var(--text-dim);
+}
+
+/* ══════════════ UTILITIES ══════════════ */
+.hidden { display: none !important; }
+
+::-webkit-scrollbar { width: 5px; height: 5px; }
+::-webkit-scrollbar-track { background: transparent; }
+::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 4px; }
+::-webkit-scrollbar-thumb:hover { background: var(--muted); }