src/styles.css

:root {
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  color: #20211f;
  background: #f2f1ec;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  --ink: #20211f;
  --muted: #6c6d68;
  --faint: #91928d;
  --paper: #fcfbf8;
  --ground: #f2f1ec;
  --ground-deep: #e8e7e1;
  --line: #d9d8d1;
  --line-strong: #c4c3bc;
  --accent: #36589f;
  --accent-deep: #263f76;
  --accent-soft: #e3e8f2;
  --danger: #9b3f3f;
  --danger-soft: #f4e5e2;
  --shadow: 0 18px 60px rgba(30, 42, 67, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  min-height: 100%;
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  min-height: 100dvh;
  margin: 0;
  background: var(--ground);
}

button,
input,
textarea {
  font: inherit;
}

button {
  color: inherit;
}

button,
summary {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
input:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(54, 88, 159, 0.3);
  outline-offset: 2px;
}

button:active {
  transform: translateY(1px);
}

code,
pre,
.login-metrics strong,
.dataset-strip strong {
  font-family: "SFMono-Regular", "Roboto Mono", monospace;
  font-variant-numeric: tabular-nums;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 20;
  padding: 0.65rem 0.9rem;
  border-radius: 0.35rem;
  color: white;
  background: var(--accent-deep);
  transform: translateY(-180%);
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-lockup > span:last-child {
  display: grid;
  gap: 0.05rem;
}

.brand-lockup strong {
  font-size: 1.03rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.brand-lockup small {
  color: var(--muted);
  font-size: 0.69rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.brand-lockup--light strong,
.brand-lockup--light small {
  color: #f8f7f1;
}

.brand-lockup--light small {
  opacity: 0.66;
}

.brand-mark {
  display: grid;
  width: 2.25rem;
  height: 2.25rem;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 0.55rem 0.55rem 0.55rem 0.18rem;
  color: white;
  background: var(--accent);
  box-shadow: 0 9px 22px rgba(32, 57, 104, 0.24);
}

.brand-mark svg {
  width: 1.35rem;
}

.icon-button {
  display: grid;
  width: 2.35rem;
  height: 2.35rem;
  padding: 0;
  place-items: center;
  border: 0;
  border-radius: 0.5rem;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  transition:
    color 180ms ease,
    background 180ms ease,
    transform 180ms ease;
}

.icon-button:hover {
  color: var(--ink);
  background: var(--ground-deep);
}

.icon-button svg {
  width: 1.2rem;
}

/* Sign-in */

.login-shell {
  display: grid;
  min-height: 100dvh;
  grid-template-columns: minmax(0, 1.15fr) minmax(25rem, 0.85fr);
  background: var(--paper);
}

.login-story {
  position: relative;
  display: flex;
  min-height: 100dvh;
  padding: clamp(2rem, 5vw, 5rem);
  flex-direction: column;
  overflow: hidden;
  color: #f8f7f1;
  background:
    radial-gradient(circle at 72% 26%, rgba(102, 128, 179, 0.24), transparent 28%),
    radial-gradient(circle at 12% 82%, rgba(83, 105, 149, 0.2), transparent 24%),
    #17233c;
}

.login-story::before {
  position: absolute;
  inset: 0;
  content: "";
  pointer-events: none;
  opacity: 0.22;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 4.5rem 4.5rem;
  mask-image: linear-gradient(to bottom, black, transparent 88%);
}

.login-story::after {
  position: absolute;
  right: -9rem;
  bottom: -13rem;
  width: 31rem;
  height: 31rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 50%;
  box-shadow:
    0 0 0 4rem rgba(255, 255, 255, 0.018),
    0 0 0 8rem rgba(255, 255, 255, 0.012);
  content: "";
}

.login-story > * {
  position: relative;
  z-index: 1;
}

.login-copy {
  width: min(44rem, 90%);
  margin: auto 0;
  padding: 7rem 0 5rem;
}

.login-copy .eyebrow {
  color: #9eb2dc;
}

.login-copy h1 {
  max-width: 10ch;
  margin: 1.1rem 0 1.35rem;
  font-size: clamp(3.2rem, 6.5vw, 6.9rem);
  font-weight: 600;
  letter-spacing: -0.068em;
  line-height: 0.91;
  text-wrap: balance;
}

.login-copy > p:last-child {
  max-width: 37rem;
  margin: 0;
  color: rgba(248, 247, 241, 0.69);
  font-size: clamp(1rem, 1.7vw, 1.2rem);
  line-height: 1.65;
  text-wrap: pretty;
}

.login-metrics {
  display: grid;
  width: min(42rem, 100%);
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.login-metrics span {
  display: grid;
  gap: 0.22rem;
  padding: 1.25rem 1.5rem 0 0;
  color: rgba(248, 247, 241, 0.55);
  font-size: 0.72rem;
}

.login-metrics strong {
  color: #f8f7f1;
  font-size: 1rem;
  font-weight: 650;
}

.login-panel {
  position: relative;
  display: grid;
  min-height: 100dvh;
  padding: clamp(2rem, 6vw, 6rem);
  place-items: center;
  background:
    radial-gradient(circle at 100% 0%, #eceff6, transparent 34%),
    var(--paper);
}

.login-card {
  width: min(28rem, 100%);
}

.login-card > img {
  width: 4.25rem;
  height: 4.25rem;
  margin-bottom: 3.25rem;
  object-fit: contain;
  opacity: 0.86;
  filter: grayscale(0.8);
}

.login-card__heading {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2.4rem;
}

.lock-tile {
  display: grid;
  width: 3rem;
  height: 3rem;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 0.65rem 0.65rem 0.65rem 0.2rem;
  color: var(--accent);
  background: var(--accent-soft);
}

.lock-tile svg {
  width: 1.25rem;
}

.login-card h2 {
  margin: 0.35rem 0 0;
  font-size: clamp(1.45rem, 3vw, 2.1rem);
  font-weight: 600;
  letter-spacing: -0.045em;
}

.login-card form label {
  display: block;
  margin-bottom: 0.55rem;
  font-size: 0.78rem;
  font-weight: 700;
}

.password-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.6rem;
}

.password-row input {
  width: 100%;
  height: 3.4rem;
  min-width: 0;
  padding: 0 1rem;
  border: 1px solid var(--line-strong);
  border-radius: 0.48rem;
  color: var(--ink);
  background: white;
  transition:
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.password-row input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(54, 88, 159, 0.1);
}

.password-row button {
  display: flex;
  height: 3.4rem;
  padding: 0 1.15rem;
  align-items: center;
  gap: 0.55rem;
  border: 0;
  border-radius: 0.48rem;
  color: white;
  background: var(--accent);
  box-shadow: 0 10px 24px rgba(38, 63, 118, 0.22);
  cursor: pointer;
  transition:
    background 180ms ease,
    transform 180ms ease,
    opacity 180ms ease;
}

.password-row button:hover:not(:disabled) {
  background: var(--accent-deep);
}

.password-row button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.password-row button svg {
  width: 1rem;
}

.form-help,
.form-error {
  margin: 0.8rem 0 0;
  font-size: 0.76rem;
}

.form-help {
  color: var(--muted);
}

.form-error {
  color: var(--danger);
}

.configuration-note {
  display: grid;
  gap: 0.55rem;
  padding: 1rem;
  border-left: 3px solid var(--accent);
  color: var(--muted);
  background: var(--accent-soft);
  font-size: 0.83rem;
  line-height: 1.55;
}

.configuration-note strong {
  color: var(--ink);
}

.configuration-note code {
  color: var(--accent-deep);
  font-size: 0.75rem;
}

.app-loading {
  display: grid;
  min-height: 100dvh;
  place-content: center;
  place-items: center;
  gap: 1rem;
  color: var(--muted);
}

.app-loading p {
  margin: 0;
  font-size: 0.82rem;
}

/* Application shell */

.app-shell {
  display: grid;
  min-height: 100dvh;
  grid-template-columns: 19.5rem minmax(0, 1fr);
  overflow: hidden;
  background: var(--paper);
}

.sidebar {
  position: relative;
  z-index: 5;
  display: flex;
  height: 100dvh;
  min-height: 0;
  padding: 1.35rem 1.15rem 1rem;
  flex-direction: column;
  border-right: 1px solid var(--line);
  background: var(--ground);
}

.sidebar__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 0.25rem;
}

.sidebar__close,
.sidebar-scrim {
  display: none;
}

.new-chat-button {
  display: flex;
  width: 100%;
  margin: 1.5rem 0 1.35rem;
  padding: 0.73rem 0.85rem;
  align-items: center;
  gap: 0.6rem;
  border: 1px solid var(--line-strong);
  border-radius: 0.48rem;
  font-size: 0.8rem;
  font-weight: 650;
  background: var(--paper);
  cursor: pointer;
  transition:
    border-color 180ms ease,
    background 180ms ease,
    transform 180ms ease;
}

.new-chat-button:hover {
  border-color: #aeb4c2;
  background: white;
}

.new-chat-button svg {
  width: 1rem;
  color: var(--accent);
}

.prompt-library {
  min-height: 0;
  flex: 1;
  overflow-y: auto;
  scrollbar-width: thin;
}

.sidebar-label {
  margin: 0 0 0.65rem;
  padding: 0 0.45rem;
  color: var(--faint);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.prompt-library details {
  margin-bottom: 0.2rem;
}

.prompt-library summary {
  display: flex;
  padding: 0.65rem 0.45rem;
  align-items: center;
  justify-content: space-between;
  border-radius: 0.4rem;
  font-size: 0.76rem;
  font-weight: 650;
  cursor: pointer;
  list-style: none;
}

.prompt-library summary::-webkit-details-marker {
  display: none;
}

.prompt-library summary:hover {
  background: var(--ground-deep);
}

.prompt-library summary svg {
  width: 0.95rem;
  transition: transform 180ms ease;
}

.prompt-library details[open] summary svg {
  transform: rotate(180deg);
}

.prompt-list {
  display: grid;
  gap: 0.12rem;
  padding: 0 0 0.45rem;
}

.prompt-list button {
  width: 100%;
  padding: 0.55rem 0.65rem 0.55rem 0.9rem;
  border: 0;
  border-radius: 0.35rem;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  font-size: 0.72rem;
  line-height: 1.35;
  text-align: left;
  transition:
    color 180ms ease,
    background 180ms ease,
    transform 180ms ease;
}

.prompt-list button:hover {
  color: var(--accent-deep);
  background: var(--accent-soft);
}

.sidebar__footer {
  padding-top: 0.8rem;
  border-top: 1px solid var(--line);
}

.data-card {
  display: grid;
  padding: 0.65rem 0.45rem;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 0.65rem;
}

.data-card > svg {
  width: 1.1rem;
  color: var(--accent);
}

.data-card div {
  display: grid;
  gap: 0.08rem;
}

.data-card span {
  font-size: 0.69rem;
  font-weight: 650;
}

.data-card strong {
  color: var(--muted);
  font-size: 0.62rem;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.logout-button {
  display: flex;
  width: 100%;
  padding: 0.58rem 0.45rem;
  align-items: center;
  gap: 0.6rem;
  border: 0;
  border-radius: 0.4rem;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  font-size: 0.7rem;
  font-weight: 600;
  transition:
    color 180ms ease,
    background 180ms ease;
}

.logout-button:hover {
  color: var(--ink);
  background: var(--ground-deep);
}

.logout-button svg {
  width: 1rem;
}

.chat-workspace {
  display: grid;
  height: 100dvh;
  min-width: 0;
  grid-template-rows: auto minmax(0, 1fr) auto;
  background:
    radial-gradient(circle at 100% 0%, rgba(224, 229, 240, 0.5), transparent 25rem),
    var(--paper);
}

.topbar {
  display: flex;
  min-height: 4.5rem;
  padding: 0 1.65rem;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(217, 216, 209, 0.88);
  background: rgba(252, 251, 248, 0.86);
  backdrop-filter: blur(14px);
}

.topbar__left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.topbar__left > div:last-child {
  display: grid;
  gap: 0.13rem;
}

.topbar__left strong {
  font-size: 0.79rem;
  font-weight: 700;
}

.topbar__left span {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--muted);
  font-size: 0.65rem;
}

.topbar__left i {
  width: 0.38rem;
  height: 0.38rem;
  border-radius: 50%;
  background: #5c876c;
  box-shadow: 0 0 0 3px rgba(92, 135, 108, 0.12);
}

.menu-button {
  display: none;
}

.topbar__new {
  display: flex;
  padding: 0.5rem 0.7rem;
  align-items: center;
  gap: 0.4rem;
  border: 0;
  border-radius: 0.4rem;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  font-size: 0.7rem;
  font-weight: 600;
  transition:
    color 180ms ease,
    background 180ms ease;
}

.topbar__new:hover {
  color: var(--ink);
  background: var(--ground-deep);
}

.topbar__new svg {
  width: 0.95rem;
}

.conversation {
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.empty-state {
  display: flex;
  width: min(63rem, calc(100% - 3rem));
  min-height: 100%;
  margin: 0 auto;
  padding: clamp(3rem, 8vh, 6.5rem) 0 3.5rem;
  flex-direction: column;
  justify-content: center;
}

.empty-state__mark {
  display: grid;
  width: 3.4rem;
  height: 3.4rem;
  margin-bottom: 1.8rem;
  place-items: center;
  border: 1px solid #c9d0de;
  border-radius: 0.75rem 0.75rem 0.75rem 0.22rem;
  color: var(--accent);
  background: rgba(252, 251, 248, 0.72);
  box-shadow:
    inset 0 1px 0 white,
    0 15px 38px rgba(30, 42, 67, 0.08);
}

.empty-state__mark svg {
  width: 1.7rem;
}

.empty-state h1 {
  max-width: 14ch;
  margin: 0.6rem 0 0.9rem;
  font-size: clamp(2.25rem, 4vw, 4.25rem);
  font-weight: 600;
  letter-spacing: -0.065em;
  line-height: 0.98;
  text-wrap: balance;
}

.empty-state__intro {
  max-width: 37rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.65;
  text-wrap: pretty;
}

.featured-prompts {
  display: grid;
  max-width: 56rem;
  margin-top: 2.5rem;
  border-top: 1px solid var(--line);
}

.featured-prompts button {
  display: grid;
  width: 100%;
  padding: 1.1rem 0.25rem;
  grid-template-columns: 2.4rem 1fr auto;
  align-items: center;
  gap: 0.8rem;
  border: 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  background: transparent;
  cursor: pointer;
  text-align: left;
  transition:
    color 180ms ease,
    padding 180ms ease,
    background 180ms ease;
}

.featured-prompts button:hover {
  padding-left: 0.55rem;
  color: var(--accent-deep);
  background: linear-gradient(90deg, rgba(227, 232, 242, 0.65), transparent);
}

.featured-prompts span {
  color: var(--faint);
  font-family: "SFMono-Regular", "Roboto Mono", monospace;
  font-size: 0.62rem;
}

.featured-prompts strong {
  font-size: 0.82rem;
  font-weight: 600;
}

.featured-prompts svg {
  width: 1rem;
}

.dataset-strip {
  display: flex;
  margin-top: 2.5rem;
  padding: 1.15rem 1.3rem;
  align-items: center;
  gap: 1.6rem;
  border-radius: 0.55rem 0.55rem 0.55rem 0.18rem;
  color: var(--muted);
  background: var(--ground);
}

.dataset-strip > svg {
  width: 1.2rem;
  flex: 0 0 auto;
  color: var(--accent);
}

.dataset-strip span {
  display: grid;
  gap: 0.12rem;
  padding-left: 1.6rem;
  border-left: 1px solid var(--line);
  font-size: 0.61rem;
}

.dataset-strip span:nth-child(2) {
  padding-left: 0;
  border-left: 0;
}

.dataset-strip strong {
  color: var(--ink);
  font-size: 0.69rem;
  font-weight: 650;
}

/* Conversation */

.message-list {
  width: min(57rem, calc(100% - 3rem));
  margin: 0 auto;
  padding: 2.8rem 0 4rem;
}

.message {
  animation: message-in 280ms ease both;
}

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

.message--user {
  display: flex;
  margin: 0 0 2.5rem;
  justify-content: flex-end;
}

.user-bubble {
  max-width: min(38rem, 82%);
  padding: 0.85rem 1rem;
  border-radius: 0.7rem 0.7rem 0.18rem 0.7rem;
  color: white;
  background: var(--accent);
  box-shadow: 0 10px 26px rgba(38, 63, 118, 0.16);
  font-size: 0.86rem;
  line-height: 1.55;
}

.message--assistant {
  display: grid;
  margin: 0 0 3.6rem;
  grid-template-columns: 2.3rem minmax(0, 1fr);
  gap: 0.9rem;
}

.assistant-avatar {
  display: grid;
  width: 2.3rem;
  height: 2.3rem;
  place-items: center;
  border: 1px solid #cbd1dd;
  border-radius: 0.52rem 0.52rem 0.52rem 0.16rem;
  color: var(--accent);
  background: var(--paper);
}

.assistant-avatar svg {
  width: 1.15rem;
}

.assistant-body {
  min-width: 0;
  padding-top: 0.12rem;
}

.assistant-meta {
  display: flex;
  margin-bottom: 0.75rem;
  align-items: baseline;
  gap: 0.55rem;
}

.assistant-meta strong {
  font-size: 0.75rem;
}

.assistant-meta span {
  color: var(--faint);
  font-size: 0.62rem;
}

.answer-lead {
  max-width: 70ch;
  margin: 0;
  font-size: 0.91rem;
  line-height: 1.72;
  white-space: pre-wrap;
}

.key-points {
  display: grid;
  max-width: 66ch;
  margin: 1rem 0 0;
  padding-left: 1.15rem;
  gap: 0.45rem;
  color: var(--muted);
  font-size: 0.79rem;
  line-height: 1.55;
}

.key-points li::marker {
  color: var(--accent);
}

.answer-error {
  max-width: 42rem;
  padding: 0.9rem 1rem;
  border-left: 3px solid var(--danger);
  color: var(--danger);
  background: var(--danger-soft);
}

.answer-error strong {
  font-size: 0.78rem;
}

.answer-error p {
  margin: 0.3rem 0 0;
  font-size: 0.76rem;
  line-height: 1.5;
}

.analysis-chart {
  margin: 1.7rem 0 1rem;
  padding: 1rem 1rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 0.65rem 0.65rem 0.65rem 0.18rem;
  background: rgba(252, 251, 248, 0.7);
}

.chart-loading {
  height: 20rem;
  margin: 1.7rem 0 1rem;
  border-radius: 0.65rem;
  background: linear-gradient(
    90deg,
    var(--ground) 0%,
    #f8f7f3 45%,
    var(--ground) 90%
  );
  background-size: 240% 100%;
  animation: shimmer 1.3s ease infinite;
}

.analysis-chart figcaption {
  margin: 0 0 0.9rem 0.35rem;
  font-size: 0.72rem;
  font-weight: 700;
}

.chart-frame {
  width: 100%;
  height: 20rem;
}

.data-details,
.method-details {
  margin-top: 0.75rem;
  border-top: 1px solid var(--line);
}

.data-details summary,
.method-details summary {
  display: flex;
  padding: 0.8rem 0.1rem;
  align-items: center;
  gap: 0.45rem;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.69rem;
  font-weight: 650;
  list-style: none;
}

.data-details summary::-webkit-details-marker,
.method-details summary::-webkit-details-marker {
  display: none;
}

.data-details summary:hover,
.method-details summary:hover {
  color: var(--accent-deep);
}

.data-details summary svg,
.method-details summary svg {
  width: 0.95rem;
}

.data-details summary span {
  margin-left: auto;
  color: var(--faint);
  font-family: "SFMono-Regular", "Roboto Mono", monospace;
  font-size: 0.6rem;
  font-weight: 500;
}

.table-scroll {
  max-height: 22rem;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 0.45rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--paper);
  font-size: 0.68rem;
  font-variant-numeric: tabular-nums;
}

th,
td {
  padding: 0.62rem 0.7rem;
  border-bottom: 1px solid #e5e4de;
  text-align: left;
  white-space: nowrap;
}

th {
  position: sticky;
  top: 0;
  z-index: 1;
  color: var(--muted);
  background: var(--ground);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

tbody tr:hover {
  background: #f6f5f1;
}

.method-details p {
  max-width: 68ch;
  margin: 0 0 0.75rem;
  color: var(--muted);
  font-size: 0.7rem;
  line-height: 1.55;
}

.method-details pre {
  max-height: 15rem;
  margin: 0;
  padding: 0.85rem;
  overflow: auto;
  border-radius: 0.4rem;
  color: #dce3f0;
  background: #1c263a;
  font-size: 0.62rem;
  line-height: 1.55;
  white-space: pre-wrap;
}

.analysis-skeleton {
  display: grid;
  width: min(36rem, 80%);
  gap: 0.55rem;
}

.analysis-skeleton i {
  height: 0.72rem;
  border-radius: 0.15rem;
  background: linear-gradient(
    90deg,
    var(--ground-deep) 0%,
    #f5f4f0 45%,
    var(--ground-deep) 90%
  );
  background-size: 240% 100%;
  animation: shimmer 1.3s ease infinite;
}

.analysis-skeleton i:nth-child(2) {
  width: 83%;
}

.analysis-skeleton i:nth-child(3) {
  width: 58%;
}

@keyframes shimmer {
  from {
    background-position: 100% 0;
  }
  to {
    background-position: -100% 0;
  }
}

/* Composer */

.composer-wrap {
  position: relative;
  z-index: 2;
  padding: 0 1.5rem 1rem;
  background: linear-gradient(to top, var(--paper) 70%, rgba(252, 251, 248, 0));
}

.composer {
  display: grid;
  width: min(57rem, 100%);
  margin: 0 auto;
  padding: 0.55rem 0.55rem 0.55rem 1rem;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  border: 1px solid var(--line-strong);
  border-radius: 0.7rem 0.7rem 0.7rem 0.22rem;
  background: white;
  box-shadow: 0 16px 44px rgba(30, 42, 67, 0.11);
  transition:
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.composer:focus-within {
  border-color: #8b9abd;
  box-shadow:
    0 16px 44px rgba(30, 42, 67, 0.12),
    0 0 0 4px rgba(54, 88, 159, 0.08);
}

.composer label {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}

.composer textarea {
  width: 100%;
  min-height: 2.5rem;
  max-height: 8rem;
  padding: 0.63rem 0.4rem 0.55rem 0;
  resize: none;
  overflow-y: auto;
  border: 0;
  outline: none;
  color: var(--ink);
  background: transparent;
  font-size: 0.8rem;
  line-height: 1.45;
}

.composer textarea::placeholder {
  color: #9b9c97;
}

.composer > button {
  display: grid;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  place-items: center;
  border: 0;
  border-radius: 0.48rem 0.48rem 0.48rem 0.16rem;
  color: white;
  background: var(--accent);
  cursor: pointer;
  transition:
    background 180ms ease,
    opacity 180ms ease,
    transform 180ms ease;
}

.composer > button:hover:not(:disabled) {
  background: var(--accent-deep);
}

.composer > button:disabled {
  cursor: not-allowed;
  opacity: 0.35;
}

.composer > button svg {
  width: 1.1rem;
}

.composer-wrap > p {
  width: min(57rem, 100%);
  margin: 0.45rem auto 0;
  color: var(--faint);
  font-size: 0.59rem;
  text-align: center;
}

/* Responsive */

@media (max-width: 880px) {
  .login-shell {
    grid-template-columns: 1fr;
  }

  .login-story {
    min-height: 48rem;
  }

  .login-panel {
    min-height: auto;
    padding-top: 5rem;
    padding-bottom: 6rem;
  }

  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: min(20rem, calc(100vw - 3.5rem));
    transform: translateX(-102%);
    transition: transform 240ms cubic-bezier(0.22, 1, 0.36, 1);
  }

  .sidebar.is-open {
    transform: translateX(0);
    box-shadow: var(--shadow);
  }

  .sidebar__close {
    display: grid;
  }

  .sidebar-scrim {
    position: fixed;
    inset: 0;
    z-index: 4;
    display: block;
    border: 0;
    visibility: hidden;
    opacity: 0;
    background: rgba(20, 26, 38, 0.36);
    backdrop-filter: blur(2px);
    transition:
      opacity 200ms ease,
      visibility 200ms ease;
  }

  .sidebar-scrim.is-visible {
    visibility: visible;
    opacity: 1;
  }

  .menu-button {
    display: grid;
  }
}

@media (max-width: 620px) {
  .login-story {
    min-height: 42rem;
    padding: 1.5rem;
  }

  .login-copy {
    width: 100%;
    padding: 5rem 0 3rem;
  }

  .login-copy h1 {
    font-size: clamp(3.2rem, 18vw, 4.6rem);
  }

  .login-metrics span {
    padding-right: 0.6rem;
    font-size: 0.61rem;
  }

  .login-metrics strong {
    font-size: 0.8rem;
  }

  .login-panel {
    padding: 4.5rem 1.5rem 5rem;
  }

  .password-row {
    grid-template-columns: 1fr;
  }

  .password-row button {
    justify-content: center;
  }

  .topbar {
    min-height: 4rem;
    padding: 0 0.9rem;
  }

  .topbar__new span {
    display: none;
  }

  .empty-state {
    width: calc(100% - 2rem);
    padding-top: 3.5rem;
    justify-content: flex-start;
  }

  .empty-state h1 {
    font-size: 2.55rem;
  }

  .empty-state__intro {
    font-size: 0.82rem;
  }

  .featured-prompts {
    margin-top: 2rem;
  }

  .featured-prompts button {
    grid-template-columns: 1.8rem 1fr auto;
  }

  .dataset-strip {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.7rem 0.9rem;
  }

  .dataset-strip span,
  .dataset-strip span:nth-child(2) {
    padding: 0;
    border: 0;
  }

  .dataset-strip span:nth-child(n + 3) {
    grid-column: 2;
  }

  .message-list {
    width: calc(100% - 1.5rem);
    padding-top: 1.8rem;
  }

  .message--assistant {
    grid-template-columns: 2rem minmax(0, 1fr);
    gap: 0.65rem;
  }

  .assistant-avatar {
    width: 2rem;
    height: 2rem;
  }

  .user-bubble {
    max-width: 90%;
  }

  .analysis-chart {
    margin-left: calc(-2rem - 0.65rem);
    padding-right: 0.4rem;
    padding-left: 0.4rem;
  }

  .chart-frame {
    height: 16rem;
  }

  .composer-wrap {
    padding: 0 0.75rem 0.65rem;
  }

  .composer-wrap > p {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}