:root {
  /* Radix Colors: Sand + Orange, z semantycznymi skalami Jade i Tomato. */
  --sand-1: #fdfdfc;
  --sand-2: #f9f9f8;
  --sand-3: #f1f0ef;
  --sand-4: #e9e8e6;
  --sand-5: #e2e1de;
  --sand-6: #dad9d6;
  --sand-7: #cfceca;
  --sand-8: #bcbbb5;
  --sand-9: #8d8d86;
  --sand-10: #82827c;
  --sand-11: #63635e;
  --sand-12: #21201c;
  --orange-1: #fefcfb;
  --orange-2: #fff7ed;
  --orange-3: #ffefd6;
  --orange-4: #ffdfb5;
  --orange-5: #ffd19a;
  --orange-6: #ffc182;
  --orange-7: #f5ae73;
  --orange-8: #ec9455;
  --orange-9: #f76b15;
  --orange-10: #ef5f00;
  --orange-11: #cc4e00;
  --orange-12: #582d1d;
  --jade-2: #f4fbf7;
  --jade-3: #e6f7ed;
  --jade-6: #acdec8;
  --jade-9: #29a383;
  --jade-10: #26997b;
  --jade-11: #208368;
  --jade-12: #1d3b31;
  --tomato-2: #fff8f7;
  --tomato-3: #feebe7;
  --tomato-6: #fdbdaf;
  --tomato-9: #e54d2e;
  --tomato-10: #dd4425;
  --tomato-11: #d13415;
  --tomato-12: #5c271f;

  --bg: var(--sand-2);
  --surface: rgba(255, 255, 255, .94);
  --white: #fff;
  --ink: var(--sand-12);
  --muted: var(--sand-11);
  --line: var(--sand-6);
  --brand: var(--orange-9);
  --brand-hover: var(--orange-10);
  --brand-strong: var(--orange-11);
  --brand-soft: var(--orange-3);
  --brand-line: var(--orange-6);
  --danger: var(--tomato-11);
  --success: var(--jade-11);
  --shadow: 0 1px 2px rgba(88, 45, 29, .04), 0 14px 38px rgba(88, 45, 29, .08);
  --shadow-raised: 0 16px 40px rgba(88, 45, 29, .14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 12% -8%, var(--orange-3) 0, transparent 32rem),
    linear-gradient(180deg, var(--orange-1), var(--bg) 32rem);
  color: var(--ink);
  font: 15px/1.55 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  min-height: 100vh;
  min-height: 100dvh;
}

button,
input,
select,
textarea {
  font: inherit;
}

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

.topbar {
  height: 68px;
  padding: 0 max(24px, calc((100vw - 1180px) / 2));
  background: var(--sand-12);
  color: var(--sand-1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 3px solid var(--orange-9);
  box-shadow: 0 8px 30px rgba(33, 32, 28, .12);
}

@media (display-mode: standalone) {
  .topbar {
    height: calc(68px + env(safe-area-inset-top));
    padding-top: env(safe-area-inset-top);
    padding-left: max(24px, env(safe-area-inset-left));
    padding-right: max(24px, env(safe-area-inset-right));
  }
}

.pwa-install-prompt {
  position: fixed;
  z-index: 120;
  right: max(14px, env(safe-area-inset-right));
  bottom: max(14px, env(safe-area-inset-bottom));
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) auto 30px;
  align-items: center;
  gap: 11px;
  width: min(560px, calc(100vw - 28px - env(safe-area-inset-left) - env(safe-area-inset-right)));
  padding: 12px;
  border: 1px solid var(--orange-6);
  border-radius: 14px;
  background: var(--sand-1);
  color: var(--sand-12);
  box-shadow: var(--shadow-raised);
}

.pwa-install-prompt[hidden] {
  display: none;
}

.pwa-install-icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--orange-8), var(--orange-10));
  color: white;
  font: 800 14px ui-monospace, SFMono-Regular, Menlo, monospace;
}

.pwa-install-prompt strong,
.pwa-install-prompt p {
  display: block;
  margin: 0;
}

.pwa-install-prompt p {
  margin-top: 2px;
  color: var(--sand-11);
  font-size: 12px;
  line-height: 1.35;
}

.pwa-install-prompt .button {
  padding: 9px 13px;
  font-size: 12px;
}

.pwa-install-prompt .button[hidden] {
  display: none;
}

.pwa-install-dismiss {
  width: 30px;
  height: 30px;
  border: 0;
  border-radius: 8px;
  background: var(--sand-3);
  color: var(--sand-11);
  font-size: 20px;
  cursor: pointer;
}

@media (max-width: 560px) {
  .pwa-install-prompt {
    left: max(8px, env(safe-area-inset-left));
    right: max(8px, env(safe-area-inset-right));
    bottom: max(8px, env(safe-area-inset-bottom));
    grid-template-columns: 40px minmax(0, 1fr) 28px;
    width: auto;
  }

  .pwa-install-icon {
    width: 40px;
    height: 40px;
  }

  .pwa-install-prompt .button {
    grid-column: 2;
    justify-self: start;
  }

  .pwa-install-dismiss {
    grid-column: 3;
    grid-row: 1;
  }
}

.brand {
  color: var(--sand-1);
  text-decoration: none;
  font-size: 21px;
  font-weight: 850;
  letter-spacing: -.5px;
}

.brand span {
  color: var(--orange-8);
}

.topbar nav {
  display: flex;
  gap: 20px;
  align-items: center;
}

.topbar nav a,
.link-button {
  color: var(--sand-7);
  text-decoration: none;
  background: none;
  border: 0;
  font: inherit;
  cursor: pointer;
  transition: color .15s ease;
}

.topbar nav a:hover,
.link-button:hover {
  color: var(--orange-7);
}

.topbar nav form {
  display: inline;
}

.page {
  width: min(1180px, calc(100% - 32px));
  margin: 38px auto 80px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

h1 {
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.15;
  letter-spacing: -1.1px;
  margin: 4px 0 12px;
}

h2 {
  font-size: 18px;
  margin: 0 0 8px;
}

.eyebrow {
  color: var(--brand-strong);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.4px;
  font-weight: 850;
  margin: 0;
}

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

.title-row,
.conversation-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 24px;
}

.button {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 17px;
  font: inherit;
  font-weight: 780;
  text-decoration: none;
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease, box-shadow .15s ease, transform .15s ease;
}

.button:hover:not(:disabled) {
  transform: translateY(-1px);
}

.button.primary {
  background: linear-gradient(135deg, var(--orange-9), var(--orange-10));
  border-color: var(--orange-10);
  color: var(--white);
  box-shadow: 0 7px 18px rgba(204, 78, 0, .22);
}

.button.primary:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--orange-10), var(--orange-11));
  box-shadow: 0 10px 24px rgba(204, 78, 0, .28);
}

.button.secondary {
  background: var(--orange-3);
  border-color: var(--orange-5);
  color: var(--orange-12);
}

.button.secondary:hover:not(:disabled) {
  background: var(--orange-4);
  border-color: var(--orange-7);
}

.button.danger {
  background: var(--tomato-3);
  border-color: var(--tomato-6);
  color: var(--tomato-12);
}

.button.success {
  background: var(--jade-9);
  border-color: var(--jade-10);
  color: var(--white);
  box-shadow: 0 7px 18px rgba(32, 131, 104, .2);
}

.button.success:hover:not(:disabled) {
  background: var(--jade-10);
}

.button:focus-visible,
.topbar a:focus-visible,
.link-button:focus-visible {
  outline: 3px solid var(--orange-5);
  outline-offset: 3px;
}

.button:disabled {
  opacity: .5;
  cursor: not-allowed;
  box-shadow: none;
}

.full {
  width: 100%;
}

.session-list {
  display: flex;
  flex-direction: column;
}

.session-row {
  display: flex;
  align-items: stretch;
  border-bottom: 1px solid var(--line);
}

.session-row:last-child {
  border-bottom: 0;
}

.session-item {
  flex: 1;
  min-width: 0;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 19px 22px;
  text-decoration: none;
  color: inherit;
  transition: background .15s ease, box-shadow .15s ease;
}

.session-item:hover {
  background: var(--orange-2);
  box-shadow: inset 3px 0 var(--orange-9);
}

.session-actions {
  position: relative;
  flex: 0 0 58px;
  display: grid;
  place-items: center;
  padding-right: 10px;
}

.session-actions > summary {
  list-style: none;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid transparent;
  border-radius: 10px;
  color: var(--sand-10);
  font-size: 14px;
  font-weight: 850;
  letter-spacing: 1px;
  cursor: pointer;
}

.session-actions > summary::-webkit-details-marker {
  display: none;
}

.session-actions > summary:hover,
.session-actions[open] > summary {
  background: var(--sand-3);
  border-color: var(--sand-6);
  color: var(--sand-12);
}

.session-actions-popover {
  position: absolute;
  z-index: 30;
  top: calc(50% + 24px);
  right: 12px;
  width: 280px;
  padding: 15px;
  background: var(--sand-1);
  border: 1px solid var(--sand-6);
  border-radius: 12px;
  box-shadow: var(--shadow-raised);
}

.session-actions-popover strong,
.session-actions-popover span {
  display: block;
}

.session-actions-popover strong {
  margin-bottom: 4px;
  color: var(--sand-12);
}

.session-actions-popover span {
  margin-bottom: 13px;
  color: var(--sand-11);
  font-size: 12px;
  line-height: 1.45;
}

.session-actions-popover form {
  margin: 0;
}

.session-actions-popover .button {
  padding: 9px 12px;
  font-size: 12px;
}

.session-item div:first-child {
  display: flex;
  flex-direction: column;
}

.session-item span,
.session-item time {
  color: var(--muted);
  font-size: 13px;
}

.session-meta {
  text-align: right;
  display: flex;
  flex-direction: column;
  align-items: end;
  gap: 6px;
}

.status {
  display: inline-flex;
  border: 1px solid var(--sand-6);
  border-radius: 999px;
  padding: 4px 9px;
  background: var(--sand-3);
  color: var(--sand-11);
  font-size: 12px;
  font-weight: 800;
}

.status.active {
  background: var(--jade-3);
  border-color: var(--jade-6);
  color: var(--jade-12);
}

.status.published {
  background: var(--orange-3);
  border-color: var(--orange-6);
  color: var(--orange-12);
}

.status.failed {
  background: var(--tomato-3);
  border-color: var(--tomato-6);
  color: var(--tomato-12);
}

.empty {
  text-align: center;
  padding: 70px 24px;
}

.form-card,
.auth-card {
  width: min(620px, 100%);
  margin: 40px auto;
  padding: 34px;
  border-top: 4px solid var(--orange-8);
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 26px;
}

.stack label {
  font-weight: 750;
}

.stack input,
.stack select,
.stack textarea,
.composer textarea {
  display: block;
  width: 100%;
  margin-top: 7px;
  border: 1px solid var(--sand-7);
  border-radius: 10px;
  padding: 12px 13px;
  font: inherit;
  background: var(--sand-1);
  color: var(--ink);
  transition: background .15s ease, border-color .15s ease, box-shadow .15s ease;
}

.stack input:hover,
.stack select:hover,
.stack textarea:hover,
.composer textarea:hover {
  border-color: var(--sand-8);
}

.stack input:focus,
.stack select:focus,
.stack textarea:focus,
.composer textarea:focus {
  outline: 0;
  background: var(--white);
  border-color: var(--orange-8);
  box-shadow: 0 0 0 3px var(--orange-4);
}

.stack small {
  display: block;
  margin-top: 5px;
  font-weight: 400;
  color: var(--muted);
}

.url-suggestions {
  margin-top: -8px;
  overflow: hidden;
  border: 1px solid var(--sand-6);
  border-radius: 12px;
  background: var(--sand-2);
}

.url-suggestions-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 13px;
  border-bottom: 1px solid var(--sand-5);
  color: var(--sand-12);
  font-size: 13px;
}

.url-suggestions-head span {
  color: var(--sand-10);
  font-size: 11px;
  font-weight: 700;
}

.url-suggestions-status {
  margin: 0;
  padding: 15px 13px;
  color: var(--sand-11);
  font-size: 13px;
}

.url-suggestions-list {
  display: grid;
  max-height: 290px;
  overflow: auto;
}

.url-suggestion {
  display: grid;
  gap: 2px;
  width: 100%;
  padding: 10px 13px;
  border: 0;
  border-bottom: 1px solid var(--sand-5);
  background: var(--sand-1);
  color: var(--sand-12);
  text-align: left;
  cursor: pointer;
}

.url-suggestion:last-child {
  border-bottom: 0;
}

.url-suggestion:hover,
.url-suggestion:focus-visible {
  outline: 0;
  background: var(--orange-3);
  box-shadow: inset 3px 0 var(--orange-9);
}

.url-suggestion span {
  font-weight: 760;
}

.url-suggestion small {
  margin: 0;
  overflow: hidden;
  color: var(--sand-11);
  font-size: 11px;
  font-weight: 400;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.errorlist {
  color: var(--danger);
  margin: 5px 0;
  padding-left: 20px;
}

.back {
  display: inline-block;
  color: var(--orange-11);
  text-decoration: none;
  margin-bottom: 18px;
  font-weight: 700;
}

.back:hover {
  color: var(--orange-12);
}

.target-url {
  color: var(--muted);
  word-break: break-all;
}

.flash {
  padding: 13px 16px;
  border: 1px solid var(--orange-6);
  border-radius: 10px;
  margin: 0 0 18px;
  background: var(--orange-3);
  color: var(--orange-12);
}

.flash.error {
  background: var(--tomato-3);
  border-color: var(--tomato-6);
  color: var(--tomato-12);
}

.flash.success {
  background: var(--jade-3);
  border-color: var(--jade-6);
  color: var(--jade-12);
}

.workspace-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 22px;
  align-items: start;
}

.chat {
  min-height: 650px;
  overflow: hidden;
}

.messages {
  padding: 24px;
  min-height: 500px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.message {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 11px;
}

.message .avatar {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--orange-3);
  color: var(--orange-12);
  font-size: 12px;
  font-weight: 850;
}

.message.user .avatar {
  background: var(--sand-4);
  color: var(--sand-12);
}

.message.system {
  background: var(--jade-2);
  border: 1px solid var(--jade-6);
  border-radius: 12px;
  padding: 11px;
}

.message.system .avatar {
  background: var(--jade-3);
  color: var(--jade-12);
}

.message p {
  margin: 4px 0;
}

.message time,
.revision time {
  font-size: 11px;
  color: var(--sand-10);
}

.welcome {
  text-align: center;
  margin: auto;
  max-width: 430px;
  color: var(--muted);
}

.welcome h2 {
  color: var(--ink);
  font-size: 24px;
}

.spark {
  font-size: 35px;
  color: var(--orange-9);
}

.composer {
  border-top: 1px solid var(--line);
  padding: 18px;
  display: flex;
  align-items: end;
  gap: 12px;
}

.composer textarea {
  resize: vertical;
  margin: 0;
}

.side {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.action-card,
.publish-card {
  padding: 20px;
}

.action-card p,
.publish-card p,
.danger-card p {
  color: var(--muted);
  font-size: 13px;
}

.revision {
  border-top: 1px solid var(--line);
  padding: 11px 0;
  display: flex;
  flex-direction: column;
}

.revision strong {
  font-size: 13px;
}

.revision span {
  font-size: 12px;
  color: var(--muted);
  overflow-wrap: anywhere;
}

.danger-card,
.diff-card {
  padding: 17px;
}

.danger-card summary,
.diff-card summary {
  cursor: pointer;
  font-weight: 800;
}

.danger-card summary {
  color: var(--danger);
}

.danger-card form {
  margin-top: 12px;
}

.diff-card pre {
  max-height: 520px;
  overflow: auto;
  background: var(--sand-12);
  color: var(--sand-3);
  border-radius: 9px;
  padding: 12px;
  font: 11px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.auth-card {
  margin-top: 10vh;
}

.auth-card input {
  font-size: 17px;
}

.auth-card .button {
  margin-top: 6px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media (max-width: 850px) {
  .workspace-grid {
    grid-template-columns: 1fr;
  }

  .side {
    order: -1;
  }

  .conversation-head,
  .title-row {
    align-items: flex-start;
  }

  .session-item {
    flex-direction: column;
  }

  .session-actions {
    align-self: center;
  }

  .session-meta {
    align-items: start;
    text-align: left;
  }

  .topbar .muted {
    display: none;
  }
}

@media (max-width: 520px) {
  .page {
    width: min(100% - 20px, 1180px);
    margin-top: 24px;
  }

  .topbar {
    padding: 0 14px;
  }

  .topbar nav {
    gap: 12px;
  }

  .form-card,
  .auth-card {
    padding: 24px;
  }

  .conversation-head,
  .title-row {
    flex-direction: column;
  }

  .title-row .button,
  .composer .button {
    width: 100%;
  }

  .composer {
    flex-direction: column;
  }
}