/* Author: Simon-Pierre Boucher
   Contact: contact@spboucher.ai
   Project: chat.spboucher.ai

   Design system — "Instrument Panel".
   Dark-first, one accent for "alive" (signal teal), one for "cost" (amber).
   Mobile-first: base styles target ~390px, enhanced upward. */

:root,
:root[data-theme="dark"] {
  --ink-950: #0e1116;
  --ink-900: #151a22;
  --ink-850: #1a212b;
  --ink-700: #2a3240;
  --fog-300: #aab4c3;
  --fog-050: #eef2f7;
  --signal-500: #3fb6a8;
  --signal-600: #2f9a8e;
  --signal-alpha: rgba(63, 182, 168, 0.14);
  --amber-500: #e0a458;
  --amber-alpha: rgba(224, 164, 88, 0.15);
  --danger: #d97b7b;

  --surface: var(--ink-950);
  --surface-raised: var(--ink-900);
  --surface-raised-2: var(--ink-850);
  --border: var(--ink-700);
  --text: var(--fog-050);
  --text-dim: var(--fog-300);
  --user-bubble: #1d2634;

  --sheet-shadow: 0 -12px 48px rgba(0, 0, 0, 0.5);
  --card-shadow: 0 2px 16px rgba(0, 0, 0, 0.35);
}

:root[data-theme="light"] {
  --ink-950: #f6f8fa;
  --ink-900: #ffffff;
  --ink-850: #eef1f5;
  --ink-700: #d4dbe4;
  --fog-300: #5b6675;
  --fog-050: #171d26;
  --signal-500: #2b9a8e;
  --signal-600: #23857a;
  --signal-alpha: rgba(43, 154, 142, 0.12);
  --amber-500: #b97f35;
  --amber-alpha: rgba(185, 127, 53, 0.13);
  --danger: #b54545;

  --surface: var(--ink-950);
  --surface-raised: var(--ink-900);
  --surface-raised-2: var(--ink-850);
  --border: var(--ink-700);
  --text: var(--fog-050);
  --text-dim: var(--fog-300);
  --user-bubble: #e7edf4;

  --sheet-shadow: 0 -12px 48px rgba(23, 29, 38, 0.18);
  --card-shadow: 0 2px 16px rgba(23, 29, 38, 0.08);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --ink-950: #f6f8fa;
    --ink-900: #ffffff;
    --ink-850: #eef1f5;
    --ink-700: #d4dbe4;
    --fog-300: #5b6675;
    --fog-050: #171d26;
    --signal-500: #2b9a8e;
    --signal-600: #23857a;
    --signal-alpha: rgba(43, 154, 142, 0.12);
    --amber-500: #b97f35;
    --amber-alpha: rgba(185, 127, 53, 0.13);
    --danger: #b54545;
    --surface: var(--ink-950);
    --surface-raised: var(--ink-900);
    --surface-raised-2: var(--ink-850);
    --border: var(--ink-700);
    --text: var(--fog-050);
    --text-dim: var(--fog-300);
    --user-bubble: #e7edf4;
    --sheet-shadow: 0 -12px 48px rgba(23, 29, 38, 0.18);
    --card-shadow: 0 2px 16px rgba(23, 29, 38, 0.08);
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
}

body {
  background: var(--surface);
  color: var(--text);
  font-family: var(--font-ui), Inter, -apple-system, system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overscroll-behavior-y: none;
}

code,
kbd,
pre,
.mono {
  font-family: var(--font-mono), "Berkeley Mono", "JetBrains Mono", ui-monospace, monospace;
}

button {
  font-family: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--signal-500);
  outline-offset: 2px;
  border-radius: 4px;
}

input,
textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

a {
  color: var(--signal-500);
}

::selection {
  background: var(--signal-alpha);
}

/* ---------- App shell ---------- */

.app {
  display: flex;
  height: 100dvh;
  overflow: hidden;
}

.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  position: relative;
}

/* ---------- Top bar ---------- */

.topbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  padding-top: calc(10px + env(safe-area-inset-top));
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  min-height: 54px;
}

.topbar-title {
  flex: 1;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  color: var(--text-dim);
  flex: none;
}

.icon-btn:hover {
  background: var(--surface-raised);
  color: var(--text);
}

/* ---------- Sidebar / drawer ---------- */

.sidebar {
  width: 300px;
  flex: none;
  background: var(--surface-raised);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding-top: env(safe-area-inset-top);
}

.sidebar-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px;
}

.wordmark {
  font-family: var(--font-mono), monospace;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text);
  flex: 1;
  user-select: none;
}

.wordmark .tld {
  color: var(--signal-500);
}

.new-chat-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 14px 10px;
  padding: 11px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-weight: 500;
  font-size: 14px;
  transition: border-color 0.15s;
}

.new-chat-btn:hover {
  border-color: var(--signal-500);
}

.conv-list {
  flex: 1;
  overflow-y: auto;
  padding: 0 8px 14px;
}

.conv-item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  text-align: left;
  padding: 10px 10px;
  border-radius: 9px;
  font-size: 14px;
  color: var(--text-dim);
  margin-bottom: 1px;
}

.conv-item.active {
  background: var(--surface-raised-2);
  color: var(--text);
}

.conv-item:hover {
  background: var(--surface-raised-2);
}

.conv-item .conv-title {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.conv-item .conv-del {
  opacity: 0;
  color: var(--text-dim);
  width: 28px;
  height: 28px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
}

.conv-item:hover .conv-del,
.conv-item.active .conv-del {
  opacity: 1;
}

.conv-item .conv-del:hover {
  color: var(--danger);
  background: var(--surface);
}

.sidebar-footer {
  border-top: 1px solid var(--border);
  padding: 10px 14px calc(10px + env(safe-area-inset-bottom));
  display: flex;
  gap: 6px;
}

.sidebar-footer .foot-btn {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 10px;
  border-radius: 8px;
  font-size: 13px;
  color: var(--text-dim);
}

.sidebar-footer .foot-btn:hover {
  background: var(--surface-raised-2);
  color: var(--text);
}

/* Mobile: sidebar becomes an off-canvas drawer */
@media (max-width: 1023px) {
  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 40;
    transform: translateX(-100%);
    transition: transform 0.25s cubic-bezier(0.32, 0.72, 0, 1);
    width: min(84vw, 320px);
    box-shadow: none;
  }

  .sidebar.open {
    transform: translateX(0);
    box-shadow: 24px 0 64px rgba(0, 0, 0, 0.4);
  }

  .drawer-scrim {
    position: fixed;
    inset: 0;
    z-index: 39;
    background: rgba(0, 0, 0, 0.45);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s;
  }

  .drawer-scrim.open {
    opacity: 1;
    pointer-events: auto;
  }
}

@media (min-width: 1024px) {
  .drawer-scrim {
    display: none;
  }

  .topbar .menu-btn {
    display: none;
  }
}

/* ---------- Messages ---------- */

.message-scroll {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  .message-scroll {
    scroll-behavior: auto;
  }
  * {
    animation-duration: 0.001s !important;
    transition-duration: 0.001s !important;
  }
}

.message-column {
  max-width: 780px;
  margin: 0 auto;
  padding: 20px 16px 24px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.empty-state {
  margin: auto;
  text-align: center;
  padding: 40px 24px;
  color: var(--text-dim);
}

.empty-state .glyph {
  font-family: var(--font-mono), monospace;
  font-size: 28px;
  color: var(--signal-500);
  margin-bottom: 14px;
}

.empty-state h2 {
  color: var(--text);
  font-size: 17px;
  font-weight: 600;
  margin: 0 0 6px;
}

.empty-state p {
  font-size: 14px;
  margin: 0;
}

/* User message: compact right-aligned card */
.msg-user {
  align-self: flex-end;
  max-width: 85%;
  background: var(--user-bubble);
  border-radius: 14px 14px 4px 14px;
  padding: 10px 14px;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 16px;
}

.msg-user.pending {
  opacity: 0.6;
}

/* Assistant message: full-width block with slim attribution header */
.msg-assistant {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.msg-attribution {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono), monospace;
  font-size: 11.5px;
  color: var(--text-dim);
  flex-wrap: wrap;
}

.msg-attribution .model-name {
  color: var(--text);
  font-weight: 500;
}

.msg-attribution .live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--signal-500);
  animation: pulse 1.4s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.25;
  }
}

.cost-chip {
  color: var(--amber-500);
  background: var(--amber-alpha);
  padding: 1px 7px;
  border-radius: 6px;
  font-size: 11px;
}

.msg-body {
  font-size: 16.5px;
  line-height: 1.62;
  word-break: break-word;
  min-width: 0;
}

.msg-body > *:first-child {
  margin-top: 0;
}

.msg-body > *:last-child {
  margin-bottom: 0;
}

.msg-error {
  color: var(--danger);
  font-size: 14px;
  border: 1px solid color-mix(in srgb, var(--danger) 35%, transparent);
  border-radius: 10px;
  padding: 10px 14px;
  background: color-mix(in srgb, var(--danger) 7%, transparent);
}

.streaming-caret::after {
  content: "";
  display: inline-block;
  width: 8px;
  height: 17px;
  margin-left: 3px;
  vertical-align: text-bottom;
  background: var(--signal-500);
  border-radius: 2px;
  animation: pulse 1.1s ease-in-out infinite;
}

.reasoning-block {
  border-left: 2px solid var(--border);
  padding: 2px 0 2px 12px;
  color: var(--text-dim);
  font-size: 13.5px;
  margin-bottom: 8px;
}

.reasoning-block summary {
  cursor: pointer;
  font-family: var(--font-mono), monospace;
  font-size: 11.5px;
  user-select: none;
  list-style: none;
}

.reasoning-block summary::-webkit-details-marker {
  display: none;
}

/* Message actions: tap-friendly row, never hover-only */
.msg-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: 2px;
}

.msg-action-btn {
  min-width: 40px;
  min-height: 36px;
  padding: 4px 10px;
  border-radius: 8px;
  color: var(--text-dim);
  font-size: 12px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.msg-action-btn:hover {
  background: var(--surface-raised);
  color: var(--text);
}

.branch-nav {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  font-family: var(--font-mono), monospace;
  font-size: 12px;
  color: var(--text-dim);
}

.branch-nav button {
  min-width: 34px;
  min-height: 36px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.branch-nav button:disabled {
  opacity: 0.3;
  cursor: default;
}

.branch-nav button:not(:disabled):hover {
  background: var(--surface-raised);
  color: var(--text);
}

/* Markdown internals */
.msg-body pre {
  background: var(--ink-900);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0;
  overflow: hidden;
  margin: 14px 0;
}

:root[data-theme="light"] .msg-body pre {
  background: #14181f;
}

.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 12px;
  border-bottom: 1px solid var(--ink-700);
  font-family: var(--font-mono), monospace;
  font-size: 11px;
  color: #8b96a5;
}

.code-block-header button {
  color: #8b96a5;
  font-family: inherit;
  font-size: 11px;
  padding: 4px 8px;
  border-radius: 6px;
  min-height: 28px;
}

.code-block-header button:hover {
  color: #eef2f7;
  background: rgba(255, 255, 255, 0.06);
}

.msg-body pre code {
  display: block;
  padding: 12px 14px;
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.55;
  background: transparent;
}

.msg-body code:not(pre code) {
  background: var(--surface-raised-2);
  border: 1px solid var(--border);
  padding: 1px 5px;
  border-radius: 5px;
  font-size: 0.86em;
}

.msg-body table {
  border-collapse: collapse;
  display: block;
  overflow-x: auto;
  max-width: 100%;
  margin: 14px 0;
  font-size: 14.5px;
}

.msg-body th,
.msg-body td {
  border: 1px solid var(--border);
  padding: 6px 12px;
  text-align: left;
}

.msg-body th {
  background: var(--surface-raised);
}

.msg-body blockquote {
  border-left: 3px solid var(--signal-500);
  margin: 14px 0;
  padding: 2px 0 2px 14px;
  color: var(--text-dim);
}

.msg-body img {
  max-width: 100%;
  border-radius: 10px;
}

/* ---------- Jump-to-latest pill ---------- */

.jump-pill {
  position: absolute;
  bottom: 150px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  background: var(--surface-raised-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 6px;
  box-shadow: var(--card-shadow);
}

/* ---------- Composer + Model Rail ---------- */

.composer-wrap {
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding: 0 12px calc(10px + env(safe-area-inset-bottom));
}

.composer {
  max-width: 780px;
  margin: 0 auto;
}

/* The Model Rail: machined cartridge attached to the composer */
.model-rail {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 12px;
  margin-top: 10px;
  border: 1px solid var(--border);
  border-radius: 12px 12px 0 0;
  border-bottom: none;
  background: var(--surface-raised);
  text-align: left;
  position: relative;
  overflow: hidden;
  transition: border-color 0.2s;
}

.model-rail:hover {
  border-color: color-mix(in srgb, var(--signal-500) 55%, var(--border));
}

.model-rail::before {
  /* signal edge: pulses teal while streaming */
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--border);
  transition: background 0.3s;
}

.model-rail.live::before {
  background: var(--signal-500);
  animation: pulse 1.2s ease-in-out infinite;
}

.rail-glyph {
  font-family: var(--font-mono), monospace;
  font-size: 13px;
  font-weight: 600;
  color: var(--signal-500);
  border: 1px solid var(--border);
  border-radius: 7px;
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  background: var(--surface);
}

.rail-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.rail-model-id {
  font-family: var(--font-mono), monospace;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.rail-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono), monospace;
  font-size: 10.5px;
  color: var(--text-dim);
}

.ctx-meter {
  flex: 1;
  max-width: 120px;
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.ctx-meter .fill {
  height: 100%;
  background: var(--amber-500);
  border-radius: 2px;
  transition: width 0.4s;
}

.price-chip {
  color: var(--amber-500);
  flex: none;
}

.rail-chevron {
  color: var(--text-dim);
  flex: none;
}

.composer-box {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  border: 1px solid var(--border);
  border-radius: 0 0 14px 14px;
  background: var(--surface-raised);
  padding: 8px 8px 8px 14px;
  transition: border-color 0.2s;
}

.composer-box:focus-within {
  border-color: var(--signal-500);
}

.composer-box textarea {
  flex: 1;
  background: transparent;
  border: none;
  resize: none;
  outline: none;
  font-size: 16px; /* prevents iOS zoom */
  line-height: 1.5;
  max-height: 40dvh;
  padding: 6px 0;
  color: var(--text);
}

.composer-box textarea::placeholder {
  color: var(--text-dim);
  opacity: 0.7;
}

.send-btn {
  width: 44px;
  height: 44px;
  border-radius: 11px;
  background: var(--signal-500);
  color: #07110f;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  transition: background 0.15s, transform 0.1s;
}

.send-btn:hover {
  background: var(--signal-600);
}

.send-btn:active {
  transform: scale(0.94);
}

.send-btn:disabled {
  background: var(--border);
  color: var(--text-dim);
  cursor: default;
}

.send-btn.stop {
  background: var(--surface-raised-2);
  color: var(--danger);
  border: 1px solid var(--border);
}

/* ---------- Bottom sheet (model picker) ---------- */

.sheet-scrim {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: rgba(0, 0, 0, 0.5);
  animation: fadeIn 0.2s;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
}

.sheet {
  position: fixed;
  z-index: 61;
  left: 0;
  right: 0;
  bottom: 0;
  top: max(24px, env(safe-area-inset-top));
  background: var(--surface-raised);
  border-radius: 18px 18px 0 0;
  box-shadow: var(--sheet-shadow);
  display: flex;
  flex-direction: column;
  animation: sheetUp 0.28s cubic-bezier(0.32, 0.72, 0.18, 1.02);
}

@keyframes sheetUp {
  from {
    transform: translateY(40px);
    opacity: 0.5;
  }
}

@media (min-width: 1024px) {
  .sheet {
    left: 50%;
    right: auto;
    top: 50%;
    bottom: auto;
    transform: translate(-50%, -50%);
    width: 660px;
    height: min(78vh, 740px);
    border-radius: 18px;
    animation: fadeIn 0.18s;
  }
}

.sheet-handle {
  width: 40px;
  height: 4px;
  border-radius: 2px;
  background: var(--border);
  margin: 10px auto 2px;
  flex: none;
}

@media (min-width: 1024px) {
  .sheet-handle {
    display: none;
  }
}

.sheet-search {
  position: sticky;
  top: 0;
  padding: 10px 14px;
  display: flex;
  gap: 8px;
  align-items: center;
}

.sheet-search input {
  flex: 1;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 11px;
  padding: 11px 14px;
  font-size: 16px;
  outline: none;
}

.sheet-search input:focus {
  border-color: var(--signal-500);
}

.filter-row {
  display: flex;
  gap: 6px;
  padding: 2px 14px 10px;
  overflow-x: auto;
  flex: none;
  scrollbar-width: none;
}

.filter-row::-webkit-scrollbar {
  display: none;
}

.filter-chip {
  flex: none;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 12.5px;
  color: var(--text-dim);
  background: var(--surface);
  min-height: 32px;
}

.filter-chip.on {
  border-color: var(--signal-500);
  color: var(--signal-500);
  background: var(--signal-alpha);
}

.model-list {
  flex: 1;
  overflow-y: auto;
  padding: 0 8px 20px;
}

.model-section-label {
  font-family: var(--font-mono), monospace;
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  padding: 14px 10px 6px;
}

.model-row {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  text-align: left;
  padding: 10px;
  border-radius: 10px;
  min-height: 56px;
}

.model-row:hover,
.model-row.highlight {
  background: var(--surface-raised-2);
}

.model-row.selected {
  background: var(--signal-alpha);
}

.model-row .prov-glyph {
  font-family: var(--font-mono), monospace;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 7px;
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  background: var(--surface);
}

.model-row .m-main {
  flex: 1;
  min-width: 0;
}

.model-row .m-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.model-row .m-sub {
  font-family: var(--font-mono), monospace;
  font-size: 11px;
  color: var(--text-dim);
  display: flex;
  gap: 8px;
  white-space: nowrap;
  overflow: hidden;
}

.model-row .fav-btn {
  width: 40px;
  height: 40px;
  border-radius: 9px;
  color: var(--text-dim);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
}

.model-row .fav-btn.on {
  color: var(--amber-500);
}

.model-row .fav-btn:hover {
  background: var(--surface);
}

.cap-badges {
  display: flex;
  gap: 4px;
  flex: none;
}

.cap-badge {
  font-family: var(--font-mono), monospace;
  font-size: 9.5px;
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 4px;
  text-transform: uppercase;
}

/* ---------- Login ---------- */

.login-page {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background:
    radial-gradient(1200px 500px at 50% -10%, var(--signal-alpha), transparent 60%),
    var(--surface);
}

.login-card {
  width: 100%;
  max-width: 380px;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 28px;
  box-shadow: var(--card-shadow);
}

.login-card .wordmark {
  font-size: 15px;
  display: block;
  margin-bottom: 4px;
}

.login-card .sub {
  color: var(--text-dim);
  font-size: 13px;
  margin: 0 0 22px;
}

.login-card label {
  display: block;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-dim);
  margin: 14px 0 6px;
}

.login-card input {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 16px;
  outline: none;
}

.login-card input:focus {
  border-color: var(--signal-500);
}

.login-card .login-btn {
  width: 100%;
  margin-top: 22px;
  background: var(--signal-500);
  color: #07110f;
  font-weight: 600;
  font-size: 15px;
  border-radius: 11px;
  padding: 13px;
  transition: background 0.15s;
}

.login-card .login-btn:hover {
  background: var(--signal-600);
}

.login-card .login-btn:disabled {
  opacity: 0.6;
}

.login-error {
  margin-top: 14px;
  color: var(--danger);
  font-size: 13.5px;
}

/* ---------- Settings / usage ---------- */

.settings-page {
  max-width: 780px;
  margin: 0 auto;
  padding: 20px 16px calc(40px + env(safe-area-inset-bottom));
}

.settings-page h1 {
  font-size: 20px;
  margin: 8px 0 20px;
}

.settings-page h2 {
  font-size: 14px;
  font-family: var(--font-mono), monospace;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-dim);
  margin: 28px 0 12px;
  font-weight: 500;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

@media (min-width: 640px) {
  .stat-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-tile {
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
}

.stat-tile .v {
  font-family: var(--font-mono), monospace;
  font-size: 20px;
  font-weight: 600;
}

.stat-tile .v.cost {
  color: var(--amber-500);
}

.stat-tile .k {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 2px;
}

.period-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 14px;
}

.usage-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

.usage-table th {
  text-align: left;
  font-family: var(--font-mono), monospace;
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-dim);
  font-weight: 500;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
}

.usage-table td {
  padding: 9px 10px;
  border-bottom: 1px solid var(--border);
}

.usage-table td.num {
  font-family: var(--font-mono), monospace;
  text-align: right;
}

.usage-table th.num {
  text-align: right;
}

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  margin-bottom: 10px;
}

.settings-row .r-label {
  font-size: 14px;
  font-weight: 500;
}

.settings-row .r-sub {
  font-size: 12.5px;
  color: var(--text-dim);
  margin-top: 2px;
}

.btn {
  padding: 9px 16px;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 13.5px;
  font-weight: 500;
  min-height: 40px;
}

.btn:hover {
  border-color: var(--signal-500);
}

.btn.primary {
  background: var(--signal-500);
  border-color: var(--signal-500);
  color: #07110f;
}

.btn.danger:hover {
  border-color: var(--danger);
  color: var(--danger);
}

/* thin scrollbars */
*::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

*::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

*::-webkit-scrollbar-track {
  background: transparent;
}