:root {
  --page: #f7f8fb;
  --surface: #ffffff;
  --surface-subtle: #f4f6f8;
  --surface-hover: #eef2f6;
  --border: #e4e7ec;
  --border-strong: #cfd6df;
  --text: #172033;
  --text-muted: #667085;
  --text-soft: #98a2b3;
  --brand: #1165d8;
  --brand-hover: #0b56bd;
  --brand-soft: #eaf2ff;
  --accent: #0f766e;
  --success: #12b76a;
  --error: #ef4444;
  --warning: #d97706;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, .05);
  --shadow-md: 0 8px 20px rgba(16, 24, 40, .08);
  --shadow-lg: 0 18px 44px rgba(16, 24, 40, .12);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--page);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

button, input, textarea { font: inherit; }
button { -webkit-tap-highlight-color: transparent; }

header {
  width: 100%;
  border-bottom: 1px solid rgba(228, 231, 236, .82);
  background: rgba(255, 255, 255, .86);
  backdrop-filter: blur(18px);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-inner {
  width: min(860px, 100%);
  min-height: 68px;
  margin: 0 auto;
  padding: 10px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
}

.logo {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: #ffffff;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
  box-shadow: 0 6px 16px rgba(17, 101, 216, .12);
}

.logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 0;
}

.header-text {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.header-text h1 {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--text);
  white-space: nowrap;
}

.header-text p {
  font-size: 0.78rem;
  color: var(--text-muted);
  white-space: nowrap;
}

#chat-container {
  width: min(860px, 100%);
  min-height: 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 0 24px;
  margin: 0 auto;
}

#messages {
  min-height: 0;
  flex: 1;
  overflow-y: auto;
  padding: 38px 0 18px;
  display: flex;
  flex-direction: column;
  gap: 26px;
  scroll-behavior: smooth;
}

#messages::-webkit-scrollbar { width: 8px; }
#messages::-webkit-scrollbar-track { background: transparent; }
#messages::-webkit-scrollbar-thumb {
  background: #d8dee7;
  border-radius: 999px;
  border: 2px solid var(--page);
}

.msg-wrap {
  display: flex;
  flex-direction: column;
  gap: 9px;
  animation: fadeUp .22s ease both;
}

.msg-wrap.user { align-items: flex-end; }
.msg-wrap.bot { align-items: flex-start; }

.msg-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  display: none;
}

.bubble {
  max-width: min(710px, 92%);
  font-size: 0.96rem;
  line-height: 1.68;
  font-weight: 450;
  overflow-wrap: anywhere;
}

.msg-wrap.user .bubble {
  max-width: min(650px, 86%);
  background: var(--brand);
  color: #ffffff;
  border-radius: 20px 20px 6px 20px;
  padding: 11px 16px;
  box-shadow: 0 10px 24px rgba(17, 101, 216, .18);
}

.msg-wrap.bot .bubble {
  color: var(--text);
  padding: 0 2px;
  background: transparent;
}

.bubble p { margin-bottom: 0.65em; }
.bubble p:last-child { margin-bottom: 0; }
.bubble strong { color: inherit; font-weight: 700; }
.bubble em { font-style: italic; }
.bubble ul, .bubble ol {
  padding-left: 1.4em;
  margin: 0.55em 0;
}
.bubble li { margin-bottom: 0.36em; }
.bubble a {
  color: var(--brand);
  text-decoration: none;
  font-weight: 650;
}
.bubble a:hover { text-decoration: underline; }
.bubble code {
  background: var(--surface-subtle);
  border: 1px solid var(--border);
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 0.9em;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  color: #9a3412;
}

.typing-indicator {
  display: flex;
  gap: 6px;
  width: fit-content;
  padding: 11px 13px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow-sm);
}

.typing-indicator span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #98a2b3;
  animation: bounce 1.2s infinite;
}

.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

.sources {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 2px;
  max-width: min(710px, 92%);
}

.source-chip {
  font-size: 0.72rem;
  padding: 5px 9px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 230px;
  font-weight: 650;
  box-shadow: var(--shadow-sm);
}

.source-chip::before {
  content: "Kaynak";
  color: var(--accent);
  margin-right: 6px;
}

.welcome {
  text-align: center;
  padding: clamp(38px, 9vh, 76px) 0 28px;
  color: var(--text-muted);
  animation: fadeUp .25s ease both;
}

.welcome .icon {
  width: 92px;
  height: 92px;
  border-radius: 22px;
  margin: 0 auto 22px;
  background: #ffffff;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0;
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.welcome .icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 0;
}

.welcome h2 {
  max-width: 720px;
  margin: 0 auto 12px;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.06;
  font-weight: 750;
  letter-spacing: 0;
  color: var(--text);
}

.welcome p {
  font-size: 1rem;
  max-width: 560px;
  margin: 0 auto 30px;
  line-height: 1.65;
  color: var(--text-muted);
}

.suggestion-chips {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  max-width: 680px;
  margin: 0 auto;
}

.chip {
  min-height: 50px;
  text-align: left;
  font-size: 0.92rem;
  padding: 13px 15px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease, transform .15s ease, box-shadow .15s ease;
  line-height: 1.35;
  font-weight: 650;
  box-shadow: var(--shadow-sm);
}

.chip:hover {
  background: var(--brand-soft);
  border-color: rgba(17, 101, 216, .22);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

#input-area {
  position: sticky;
  bottom: 0;
  padding: 12px 0 max(16px, env(safe-area-inset-bottom));
  background: linear-gradient(180deg, rgba(247, 248, 251, 0), var(--page) 28%);
  z-index: 50;
}

#notice-layer {
  position: absolute;
  left: 0;
  bottom: calc(100% + 8px);
  width: 100%;
  min-height: 0;
  pointer-events: none;
}

.notice-pill {
  position: relative;
  width: fit-content;
  max-width: 100%;
  margin-left: 0;
  padding: 9px 34px 9px 13px;
  border: 1px solid #fed7aa;
  background: #fff7ed;
  color: #9a3412;
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1.4;
  animation: noticeIn .18s ease both;
  pointer-events: auto;
}

.notice-close {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  border: 0;
  background: transparent;
  color: #9a3412;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  line-height: 1;
}

.notice-close:hover { opacity: 0.72; }

.input-wrap {
  display: flex;
  gap: 10px;
  align-items: flex-end;
  background: rgba(255, 255, 255, .96);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 11px;
  box-shadow: var(--shadow-lg);
  transition: border-color .15s ease, box-shadow .15s ease;
  backdrop-filter: blur(18px);
}

.input-wrap:focus-within {
  border-color: rgba(17, 101, 216, .36);
  box-shadow: 0 20px 52px rgba(17, 101, 216, .14);
}

#user-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font-size: 0.96rem;
  resize: none;
  min-height: 30px;
  max-height: 150px;
  line-height: 1.6;
  overflow-y: auto;
  font-weight: 500;
  padding: 3px 3px 3px 2px;
}

#user-input::placeholder { color: var(--text-soft); }
#user-input::-webkit-scrollbar { width: 4px; }
#user-input::-webkit-scrollbar-thumb {
  background: #d1d5db;
  border-radius: 999px;
}

.input-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

#clear-btn,
#send-btn {
  height: 38px;
  border: 0;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .15s ease, color .15s ease, transform .15s ease, box-shadow .15s ease;
  font-weight: 750;
  line-height: 1;
}

#clear-btn {
  width: 38px;
  background: var(--surface-subtle);
  color: var(--text-muted);
  font-size: 1rem;
}

#clear-btn:hover {
  background: var(--surface-hover);
  color: var(--text);
}

#send-btn {
  min-width: 78px;
  padding: 0 15px;
  background: var(--brand);
  color: #ffffff;
  font-size: 0.9rem;
  box-shadow: 0 8px 18px rgba(17, 101, 216, .22);
}

#send-btn:hover:not(:disabled) {
  background: var(--brand-hover);
  transform: translateY(-1px);
  box-shadow: 0 12px 26px rgba(17, 101, 216, .26);
}

#send-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
}

.input-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-top: 9px;
  padding: 0 4px;
  color: var(--text-soft);
  font-size: 0.72rem;
  font-weight: 600;
}

#char-count { font-weight: 700; }

.project-note {
  flex: 1;
  min-width: 0;
  text-align: center;
}

body.gate-active header,
body.gate-active #chat-container {
  display: none;
}

#entry-gate {
  min-height: 100vh;
  min-height: 100dvh;
  height: 100vh;
  height: 100dvh;
  width: 100%;
  display: none;
  overflow: hidden;
  background:
    radial-gradient(circle at 18% 12%, rgba(17, 101, 216, .12), transparent 34%),
    linear-gradient(135deg, #f8fafc 0%, #ffffff 45%, #eef6ff 100%);
  padding: 28px 18px;
}

body.gate-active #entry-gate {
  display: flex;
  align-items: center;
  justify-content: center;
}

.gate-shell {
  width: min(920px, 100%);
  height: min(720px, calc(100dvh - 56px));
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  background: rgba(255, 255, 255, .88);
  border: 1px solid rgba(207, 214, 223, .82);
  border-radius: 28px;
  overflow: hidden;
  box-shadow: 0 28px 76px rgba(16, 24, 40, .16);
  backdrop-filter: blur(22px);
}

.gate-brand {
  position: relative;
  padding: 36px;
  background:
    linear-gradient(155deg, rgba(17, 101, 216, .96), rgba(15, 118, 110, .92)),
    #1165d8;
  color: #ffffff;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 34px;
}

.gate-brand::after {
  content: "";
  position: absolute;
  inset: auto 28px 28px auto;
  width: 190px;
  height: 190px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .11);
}

.gate-logo {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  background: rgba(255, 255, 255, .96);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  box-shadow: 0 18px 38px rgba(0, 0, 0, .18);
}

.gate-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.gate-title {
  position: relative;
  z-index: 1;
}

.gate-title h1 {
  margin-top: 22px;
  font-size: clamp(2.35rem, 6vw, 4rem);
  line-height: 1;
  font-weight: 780;
  letter-spacing: 0;
}

.gate-title p {
  max-width: 330px;
  margin-top: 16px;
  color: rgba(255, 255, 255, .84);
  font-size: .98rem;
  line-height: 1.65;
  font-weight: 500;
}

.gate-meta {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 12px;
  color: rgba(255, 255, 255, .78);
  font-size: .78rem;
  line-height: 1.45;
  font-weight: 650;
}

.gate-panel {
  padding: 34px;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
}

.gate-kicker {
  color: var(--accent);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: 0;
  margin-bottom: 10px;
}

.gate-panel h2 {
  color: var(--text);
  font-size: clamp(1.5rem, 4vw, 2rem);
  line-height: 1.15;
  letter-spacing: 0;
  font-weight: 780;
  margin-bottom: 10px;
}

.gate-intro {
  color: var(--text-muted);
  font-size: .94rem;
  line-height: 1.62;
  margin-bottom: 22px;
}

.gate-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  padding: 5px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface-subtle);
  margin-bottom: 14px;
}

.gate-dev-warning {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  margin-bottom: 14px;
  border: 1px solid #fed7aa;
  border-radius: 14px;
  background: #fff7ed;
  color: #9a3412;
  font-size: 0.88rem;
  line-height: 1.55;
  font-weight: 650;
  box-shadow: var(--shadow-sm);
}

.gate-dev-warning::before {
  content: "⚠️";
  font-size: 1.2rem;
  flex-shrink: 0;
  line-height: 1.4;
}

.gate-tab {
  position: relative;
  min-height: 44px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: .88rem;
  font-weight: 760;
  transition: background .15s ease, color .15s ease, box-shadow .15s ease;
}

.gate-tab.active {
  background: #ffffff;
  color: var(--text);
  box-shadow: var(--shadow-sm);
}

.gate-tab.visited::after {
  content: "";
  position: absolute;
  top: 9px;
  right: 10px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
}

.gate-content {
  flex: 1;
  min-height: 0;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: #ffffff;
  padding: 22px;
  box-shadow: var(--shadow-sm);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: #cbd5e1 #f8fafc;
}

.gate-content::-webkit-scrollbar {
  width: 10px;
}

.gate-content::-webkit-scrollbar-track {
  background: #f8fafc;
  border-radius: 999px;
}

.gate-content::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border: 2px solid #f8fafc;
  border-radius: 999px;
}

.gate-section {
  display: none;
  animation: fadeUp .2s ease both;
}

.gate-section.active {
  display: block;
}

.gate-section h3 {
  color: var(--text);
  font-size: 1.06rem;
  line-height: 1.3;
  letter-spacing: 0;
  margin-bottom: 12px;
}

.gate-section p,
.gate-section li {
  color: var(--text-muted);
  font-size: .92rem;
  line-height: 1.68;
}

.gate-section ul {
  display: grid;
  gap: 9px;
  padding-left: 1.1rem;
}

.gate-author {
  width: fit-content;
  max-width: 100%;
  margin: 0 0 14px;
  padding: 7px 10px;
  border-radius: 10px;
  background: var(--brand-soft);
  border: 1px solid rgba(17, 101, 216, .14);
  color: var(--text);
  font-size: .78rem;
  font-weight: 750;
  line-height: 1.35;
}

.gate-actions {
  margin-top: 18px;
  display: grid;
  gap: 13px;
}

.gate-check {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  padding: 13px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(244, 246, 248, .72);
  cursor: pointer;
}

.gate-check input {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--brand);
  flex-shrink: 0;
}

.gate-check span {
  color: var(--text);
  font-size: .88rem;
  line-height: 1.5;
  font-weight: 650;
}

.gate-status {
  min-height: 20px;
  color: var(--warning);
  font-size: .78rem;
  font-weight: 700;
  line-height: 1.45;
}

#gate-continue {
  min-height: 48px;
  border: 0;
  border-radius: 14px;
  background: var(--brand);
  color: #ffffff;
  cursor: pointer;
  font-size: .95rem;
  font-weight: 800;
  box-shadow: 0 14px 30px rgba(17, 101, 216, .25);
  transition: background .15s ease, transform .15s ease, box-shadow .15s ease, opacity .15s ease;
}

#gate-continue:hover:not(:disabled) {
  background: var(--brand-hover);
  transform: translateY(-1px);
  box-shadow: 0 18px 38px rgba(17, 101, 216, .3);
}

#gate-continue:disabled {
  opacity: .46;
  cursor: not-allowed;
  box-shadow: none;
}

/* ── FEEDBACK ──────────────────────────────────────────────────────────── */
.fb-bar {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-top: 6px;
  max-width: min(710px, 92%);
  opacity: 0.6;
  transition: opacity .15s ease;
}
.fb-bar:hover { opacity: 1; }
.fb-btn {
  width: 30px;
  height: 30px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .15s ease, color .15s ease;
}
.fb-btn:hover { background: var(--surface-hover); color: var(--text); }
.fb-btn.fb-active { color: var(--brand); background: var(--brand-soft); }
.fb-btn.fb-active[data-fb-type="dislike"] { color: var(--error); background: #fef2f2; }
.fb-text-box {
  width: 100%;
  margin-top: 4px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  animation: fadeUp .15s ease both;
}
.fb-textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 10px;
  font-size: 0.85rem;
  line-height: 1.5;
  resize: none;
  background: #ffffff;
  color: var(--text);
  outline: none;
  font-family: inherit;
}
.fb-textarea:focus { border-color: var(--brand); }
.fb-text-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}
.fb-text-cancel, .fb-text-send {
  border: none;
  border-radius: 8px;
  padding: 6px 14px;
  font-size: 0.8rem;
  font-weight: 650;
  cursor: pointer;
  transition: background .15s ease;
}
.fb-text-cancel { background: var(--surface-subtle); color: var(--text-muted); }
.fb-text-cancel:hover { background: var(--surface-hover); }
.fb-text-send { background: var(--brand); color: #ffffff; }
.fb-text-send:hover { background: var(--brand-hover); }
.fb-thanks {
  font-size: 0.78rem;
  color: var(--success);
  font-weight: 650;
  padding: 4px 0;
  animation: fadeUp .2s ease both;
}

/* ── ANIMATIONS ────────────────────────────────────────────────────────── */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes bounce {
  0%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-5px);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes noticeIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── RESPONSIVE ────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  body { overflow: hidden; }
  .header-inner, #chat-container {
    padding-left: 12px;
    padding-right: 12px;
  }
  #entry-gate {
    align-items: flex-start;
    padding: 12px;
  }
  .gate-shell {
    grid-template-columns: 1fr;
    grid-template-rows: 72px minmax(0, 1fr);
    height: calc(100dvh - 24px);
    border-radius: 22px;
  }
  .gate-brand {
    padding: 10px 14px;
    gap: 10px;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
  }
  .gate-brand::after {
    display: none;
  }
  .gate-logo {
    width: 42px;
    height: 42px;
    border-radius: 11px;
    flex-shrink: 0;
  }
  .gate-title {
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .gate-title h1 {
    margin-top: 0;
    font-size: 1.28rem;
    line-height: 1.05;
  }
  .gate-title p {
    display: none;
  }
  .gate-meta {
    display: none;
  }
  .gate-panel {
    padding: 12px;
    min-height: 0;
  }
  .gate-kicker {
    display: none;
  }
  .gate-panel h2 {
    font-size: 1.08rem;
    line-height: 1.18;
    margin-bottom: 4px;
  }
  .gate-intro {
    font-size: .76rem;
    line-height: 1.38;
    margin-bottom: 8px;
  }
  .gate-tabs {
    gap: 6px;
    padding: 4px;
    border-radius: 12px;
    margin-bottom: 8px;
  }
  .gate-content {
    min-height: 0;
    padding: 14px;
    border-radius: 14px;
  }
  .gate-tab {
    min-height: 36px;
    border-radius: 9px;
    font-size: .78rem;
  }
  .gate-section h3 {
    font-size: .98rem;
    margin-bottom: 9px;
  }
  .gate-section p,
  .gate-section li {
    font-size: .84rem;
    line-height: 1.55;
  }
  .gate-section ul {
    gap: 7px;
  }
  .gate-author {
    margin-bottom: 10px;
    padding: 6px 9px;
    font-size: .72rem;
  }
  .gate-actions {
    margin-top: 9px;
    gap: 7px;
  }
  .gate-check {
    padding: 9px;
    border-radius: 12px;
    gap: 8px;
  }
  .gate-check input {
    width: 16px;
    height: 16px;
  }
  .gate-check span {
    font-size: .76rem;
    line-height: 1.35;
  }
  .gate-status {
    min-height: 16px;
    font-size: .68rem;
    line-height: 1.25;
  }
  #gate-continue {
    min-height: 40px;
    border-radius: 12px;
    font-size: .86rem;
  }
  .header-inner {
    min-height: 56px;
    justify-content: center;
    gap: 10px;
  }
  .logo { width: 36px; height: 36px; border-radius: 9px; }
  .header-text h1 { font-size: 0.95rem; }
  .header-text p { display: none; }
  #messages {
    gap: 16px;
    padding: 14px 0 8px;
  }
  .welcome { padding: 12px 0 14px; }
  .welcome .icon {
    width: 58px;
    height: 58px;
    border-radius: 14px;
    margin-bottom: 12px;
  }
  .welcome h2 {
    font-size: 1.34rem;
    line-height: 1.16;
    margin-bottom: 8px;
  }
  .welcome p {
    font-size: 0.82rem;
    line-height: 1.46;
    margin-bottom: 14px;
  }
  .suggestion-chips {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
  }
  .chip {
    min-height: 46px;
    padding: 9px 10px;
    border-radius: 10px;
    font-size: 0.78rem;
    line-height: 1.25;
  }
  .bubble { max-width: 96%; }
  .msg-wrap.user .bubble {
    max-width: 90%;
    padding: 9px 13px;
    border-radius: 17px 17px 5px 17px;
    font-size: 0.92rem;
  }
  .msg-wrap.bot .bubble {
    font-size: 0.91rem;
    line-height: 1.58;
  }
  #input-area {
    padding-top: 8px;
    padding-bottom: max(10px, env(safe-area-inset-bottom));
  }
  .input-wrap {
    gap: 8px;
    padding: 8px;
    border-radius: 14px;
  }
  #user-input,
  .fb-textarea {
    font-size: 16px;
    min-height: 30px;
    max-height: 112px;
    line-height: 1.5;
  }
  #clear-btn {
    width: 36px;
    height: 36px;
    border-radius: 10px;
  }
  #send-btn {
    min-width: 40px;
    width: 40px;
    height: 36px;
    padding: 0;
    border-radius: 10px;
    font-size: 0;
  }
  #send-btn::before {
    content: "↑";
    font-size: 1.1rem;
  }
  .input-footer {
    justify-content: flex-end;
    font-size: 0.66rem;
    margin-top: 6px;
  }
  .input-footer span:first-child,
  .project-note { display: none; }
  .sources { max-width: 96%; gap: 6px; }
  .source-chip {
    max-width: 160px;
    font-size: 0.68rem;
    padding: 4px 8px;
  }
  .notice-pill {
    max-width: min(100%, 320px);
    border-radius: 999px;
    font-size: 0.73rem;
    box-shadow: 0 8px 20px rgba(154, 52, 18, .12);
  }
}

@media (max-width: 380px) {
  .suggestion-chips { grid-template-columns: 1fr; }
  .chip { min-height: 40px; }
  .welcome p { display: none; }
  .header-text h1 { font-size: 0.9rem; }
}