:root {
  --bg: radial-gradient(circle at 12% 16%, #ffe3d2 0%, transparent 34%),
    radial-gradient(circle at 85% 10%, #d8ebff 0%, transparent 36%),
    radial-gradient(circle at 45% 90%, #e4dcff 0%, transparent 38%),
    radial-gradient(circle at 78% 78%, #d7fff2 0%, transparent 35%), #f8f7ff;
  --card-bg: rgba(255, 255, 255, 0.9);
  --card-border: rgba(62, 79, 112, 0.18);
  --title: #1d2a44;
  --brand: #633ca3;
  --status-bg: #eef4ff;
  --status-text: #2c3f72;
  --soft-border: #ccd5e5;
  --soft-bg: #f9f7ff;
  --soft-text: #2b3f63;
  --chip-bg: linear-gradient(135deg, #5c6cff 0%, #7d58df 100%);
  --chip-text: #f6f8ff;
  --chat-border: #d4dce9;
  --chat-bg: linear-gradient(180deg, #ffffff 0%, #f3f7ff 100%);
  --assistant-bubble: linear-gradient(135deg, #d8ecff 0%, #dff3ff 52%, #e5e7ff 100%);
  --user-bubble: linear-gradient(135deg, #ffe6d3 0%, #ffe2f3 55%, #f0e4ff 100%);
  --assistant-text: #1c3960;
  --user-text: #552a4f;
  --code-border: #c8d2e3;
  --code-text: #243655;
  --button-bg: linear-gradient(135deg, #4e67d2 0%, #6f4ec4 100%);
  --button-text: #ffffff;
  --muted-text: #5a6f93;
  --overlay: rgba(20, 31, 51, 0.45);
  --modal-bg: #ffffff;
  --link-bg: linear-gradient(135deg, #2e7cc7 0%, #305bb5 100%);
}

.app-shell.dark {
  --bg: radial-gradient(circle at 14% 14%, #3a2a5f 0%, transparent 34%),
    radial-gradient(circle at 86% 12%, #1a4a55 0%, transparent 36%),
    radial-gradient(circle at 45% 88%, #2a2346 0%, transparent 38%),
    radial-gradient(circle at 75% 78%, #133f35 0%, transparent 35%), #101526;
  --card-bg: rgba(18, 24, 38, 0.92);
  --card-border: rgba(112, 129, 161, 0.34);
  --title: #edf1ff;
  --brand: #bda8ff;
  --status-bg: #23314c;
  --status-text: #d5ddff;
  --soft-border: #32435f;
  --soft-bg: #1a243a;
  --soft-text: #dce3ff;
  --chip-bg: linear-gradient(135deg, #5a67ff 0%, #a05bff 100%);
  --chip-text: #f4f6ff;
  --chat-border: #2f405b;
  --chat-bg: linear-gradient(180deg, #121b2d 0%, #141a33 100%);
  --assistant-bubble: linear-gradient(135deg, #1f4e67 0%, #2b4967 55%, #2f3c75 100%);
  --user-bubble: linear-gradient(135deg, #5f3c2e 0%, #5a2f52 55%, #433169 100%);
  --assistant-text: #e5f4ff;
  --user-text: #ffe7f2;
  --code-border: #37506f;
  --code-text: #d7e2f5;
  --button-bg: linear-gradient(135deg, #5d78ff 0%, #8b58f5 100%);
  --button-text: #eef3fb;
  --muted-text: #9eb0cd;
  --overlay: rgba(6, 9, 15, 0.66);
  --modal-bg: #172235;
  --link-bg: linear-gradient(135deg, #4291e9 0%, #5e7dff 100%);
}

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

html,
body {
  margin: 0;
  width: 100%;
  min-height: 100%;
}

body {
  font-family: "Segoe UI", "Trebuchet MS", sans-serif;
}

.app-shell {
  min-height: 100vh;
  background: var(--bg);
  display: grid;
  place-items: center;
  padding: 1rem;
  position: relative;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 999px;
  filter: blur(38px);
  opacity: 0.45;
  animation: float 8s ease-in-out infinite alternate;
}

.orb-a {
  width: 220px;
  height: 220px;
  background: #8ba4cc;
  left: -40px;
  top: 10%;
}

.orb-b {
  width: 260px;
  height: 260px;
  background: #90a8cf;
  right: -50px;
  bottom: 4%;
}

.app-card {
  width: min(430px, 100%);
  height: min(92vh, 860px);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 22px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  box-shadow: 0 20px 60px rgba(14, 34, 67, 0.14);
  overflow: hidden;
  z-index: 2;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  flex-wrap: nowrap;
}

.top-actions {
  display: flex;
  gap: 0.4rem;
  align-items: center;
  justify-content: flex-end;
}

.brand {
  margin: 0;
  color: var(--brand);
  font-weight: 700;
  letter-spacing: 0.14em;
  font-size: 0.72rem;
}

.title-stack {
  display: grid;
  gap: 0.12rem;
}

.status-inline {
  margin: 0;
  color: var(--status-text);
  font-size: 0.72rem;
  font-weight: 700;
}

.icon-btn {
  width: 30px;
  height: 30px;
  border-radius: 999px;
  border: 1px solid var(--soft-border);
  background: var(--soft-bg);
  color: var(--soft-text);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
}

.switch-btn {
  border: 1px solid var(--soft-border);
  border-radius: 999px;
  background: var(--soft-bg);
  color: var(--soft-text);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.3rem 0.58rem;
  cursor: pointer;
}

.chat-tabs-row {
  display: flex;
  gap: 0.45rem;
  min-width: 0;
}

.tab-create {
  border: 1px solid var(--soft-border);
  border-radius: 999px;
  background: var(--button-bg);
  color: var(--button-text);
  font-size: 0.76rem;
  font-weight: 700;
  padding: 0.45rem 0.7rem;
  cursor: pointer;
  white-space: nowrap;
}

.chat-tabs {
  display: flex;
  gap: 0.45rem;
  overflow-x: auto;
  padding-bottom: 0.1rem;
}

.chat-pill {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--soft-border);
  background: var(--soft-bg);
  border-radius: 999px;
  overflow: hidden;
}

.chat-open,
.chat-delete {
  border: none;
  background: transparent;
  color: var(--soft-text);
  font-size: 0.74rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
}

.chat-open {
  padding: 0.45rem 0.65rem;
}

.chat-delete {
  padding: 0.45rem 0.45rem;
  border-left: 1px solid var(--soft-border);
}

.chat-pill.active {
  background: var(--button-bg);
  border-color: var(--button-bg);
}

.chat-pill.active .chat-open,
.chat-pill.active .chat-delete {
  color: var(--button-text);
}

.controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.controls select,
.controls button {
  width: 100%;
  border: 1px solid var(--soft-border);
  border-radius: 12px;
  padding: 0.46rem 0.6rem;
  font-size: 0.8rem;
  font-weight: 600;
  background: var(--soft-bg);
  color: var(--soft-text);
}

.controls button {
  cursor: pointer;
}


.chips {
  display: flex;
  gap: 0.45rem;
  overflow-x: auto;
}

.chips button {
  border: none;
  border-radius: 999px;
  background: var(--chip-bg);
  color: var(--chip-text);
  font-size: 0.68rem;
  padding: 0.32rem 0.56rem;
  white-space: nowrap;
  cursor: pointer;
}

.image-tag {
  margin: 0;
  font-size: 0.78rem;
  color: var(--soft-text);
}

.hidden {
  display: none !important;
}

.chat-body {
  border: 1px solid var(--chat-border);
  border-radius: 16px;
  padding: 0.75rem;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  background: var(--chat-bg);
}

.bubble {
  margin: 0 0 0.65rem;
  max-width: 88%;
  padding: 0.6rem;
  border-radius: 14px;
}

.bubble.user {
  background: var(--user-bubble);
  margin-left: auto;
  border: 1px solid rgba(178, 87, 178, 0.25);
}

.bubble.assistant {
  background: var(--assistant-bubble);
  border: 1px solid rgba(80, 129, 206, 0.25);
}

.bubble-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.4rem;
  margin-bottom: 0.25rem;
}

.bubble-head span {
  font-size: 0.68rem;
  opacity: 0.82;
  color: var(--soft-text);
}

.mini-copy {
  border: 1px solid var(--soft-border);
  background: var(--modal-bg);
  border-radius: 8px;
  padding: 0.2rem 0.5rem;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--soft-text);
  cursor: pointer;
}

.msg-content {
  display: grid;
  gap: 0.45rem;
}

.msg-text {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.4;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  color: var(--soft-text);
}

.bubble.assistant .msg-text,
.bubble.assistant .bubble-head span {
  color: var(--assistant-text);
}

.bubble.user .msg-text,
.bubble.user .bubble-head span {
  color: var(--user-text);
}

.code-wrap {
  border: 1px solid var(--code-border);
  background: var(--soft-bg);
  border-radius: 10px;
  overflow: hidden;
}

.code-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.3rem 0.45rem;
  border-bottom: 1px solid var(--code-border);
}

.code-head small {
  color: var(--soft-text);
  font-size: 0.7rem;
  font-weight: 700;
}

.code-wrap pre {
  margin: 0;
  overflow-x: auto;
  padding: 0.65rem;
}

.code-wrap code {
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.76rem;
  color: var(--code-text);
}

.typing {
  margin: 0.2rem 0 0;
  font-size: 0.75rem;
  color: var(--muted-text);
}

.composer {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  gap: 0.4rem;
  align-items: center;
}

.voice-mini {
  width: 38px;
  height: 38px;
  border: 1px solid var(--soft-border);
  border-radius: 12px;
  background: var(--soft-bg);
  color: var(--soft-text);
  cursor: pointer;
  font-size: 0.95rem;
}

.composer input {
  border: 1px solid var(--soft-border);
  border-radius: 12px;
  padding: 0.4rem 0.6rem;
  font-size: 0.8rem;
  height: 38px;
  background: var(--soft-bg);
  color: var(--soft-text);
  min-width: 0;
}

.upload-inline {
  border: 1px solid var(--soft-border);
  border-radius: 12px;
  width: 44px;
  height: 38px;
  display: grid;
  place-items: center;
  background: var(--soft-bg);
  color: var(--soft-text);
  cursor: pointer;
  align-self: center;
}

.upload-inline input {
  display: none;
}

.upload-inline svg {
  width: 20px;
  height: 20px;
}

#sendBtn {
  border: none;
  border-radius: 12px;
  background: var(--button-bg);
  color: var(--button-text);
  padding: 0 0.85rem;
  font-size: 0.8rem;
  height: 38px;
  cursor: pointer;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--overlay);
  display: grid;
  place-items: center;
  z-index: 12;
  padding: 1rem;
}

.profile-modal {
  width: min(420px, 100%);
  background: var(--modal-bg);
  border: 1px solid var(--soft-border);
  border-radius: 16px;
  padding: 1rem;
  position: relative;
}

.profile-tag {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--muted-text);
}

.profile-modal h2 {
  margin: 0.15rem 0 0.45rem;
  color: var(--title);
}

.profile-modal p {
  margin: 0 0 0.8rem;
  color: var(--soft-text);
}

.profile-modal a {
  display: inline-block;
  text-decoration: none;
  background: var(--link-bg);
  color: #fff;
  padding: 0.5rem 0.8rem;
  border-radius: 10px;
  font-size: 0.82rem;
  font-weight: 700;
}

.close-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  border: 1px solid var(--soft-border);
  background: var(--soft-bg);
  color: var(--soft-text);
  border-radius: 8px;
  width: 32px;
  height: 32px;
  cursor: pointer;
}

@media (max-width: 800px) {
  .app-card {
    width: min(430px, 100%);
    height: min(94vh, 920px);
    border-radius: 18px;
    padding: 0.75rem;
  }

  .bubble {
    max-width: 95%;
  }
}

@media (max-width: 520px) {
  .upload-inline {
    width: 40px;
  }

  #sendBtn {
    padding: 0 0.7rem;
  }
}

@keyframes float {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(-20px);
  }
}