/* Liz Mobile Companion — Nocturnal Obsidian + Crimson/Violet AAA Design System */

:root {
  /* Superficies OLED-friendly sin blanco puro */
  --lz-bg-canvas: #0A080E;
  --lz-bg-surface: #13101A;
  --lz-bg-surface-elevated: #1C1726;
  --lz-bg-code: #0D0A12;
  --lz-bg-backdrop: rgba(6, 4, 10, 0.84);

  /* Bordes hairline */
  --lz-border-subtle: #2E263D;
  --lz-border-interactive: #6E5F87;

  /* Texto WCAG AAA */
  --lz-fg-primary: #F2EDF7;
  --lz-fg-secondary: #C4B8D4;
  --lz-fg-muted: #9D8FB3;

  /* Acentos identitarios Liz (carmesi + violeta) */
  --lz-accent-crimson: #9E1F3F;
  --lz-accent-crimson-hover: #8B1A37;
  --lz-fg-on-crimson: #FDF6F8;
  --lz-accent-violet: #5B2182;
  --lz-link: #E2B4FF;
  --lz-focus-ring: #D8B4FE;

  /* Estados semanticos */
  --lz-ok-bg: #0F241A;
  --lz-ok-fg: #86EFAC;
  --lz-warn-bg: #261E0B;
  --lz-warn-fg: #FDE047;
  --lz-err-bg: #2A1218;
  --lz-err-fg: #FCA5A5;

  /* Escala matematica 4/8px */
  --lz-space-1: 4px;
  --lz-space-2: 8px;
  --lz-space-3: 12px;
  --lz-space-4: 16px;
  --lz-space-5: 24px;
  --lz-space-6: 32px;

  /* Radios y tipografia */
  --lz-radius-sm: 8px;
  --lz-radius-md: 14px;
  --lz-radius-lg: 18px;
  --lz-font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans", Helvetica, Arial, sans-serif;
  --lz-font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;

  /* Altura dinamica del viewport visual (actualizada en JS cuando el teclado movil abre) */
  --lz-vh: 100dvh;
  --lz-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  background-color: var(--lz-bg-canvas);
  color: var(--lz-fg-primary);
  font-family: var(--lz-font-sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
  overscroll-behavior-y: none;
}

::selection {
  background-color: var(--lz-accent-violet);
  color: var(--lz-fg-primary);
}

[hidden] {
  display: none !important;
}

.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;
}

:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--lz-bg-canvas), 0 0 0 4px var(--lz-focus-ring);
}

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

/* Shell principal optimizado para teclado virtual */
.app-shell {
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100vh;
  height: var(--lz-vh);
  max-height: var(--lz-vh);
  overflow: hidden;
  background-color: var(--lz-bg-canvas);
}

/* ==================== Controles Base (Targets >= 48x48px) ==================== */
.btn-primary,
.btn-secondary,
.btn-ghost,
.btn-danger,
.btn-danger-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--lz-space-2);
  min-height: 48px;
  min-width: 48px;
  padding: 0 var(--lz-space-4);
  border-radius: var(--lz-radius-md);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color 150ms var(--lz-ease-out), border-color 150ms var(--lz-ease-out), transform 120ms var(--lz-ease-out), opacity 150ms var(--lz-ease-out);
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.btn-primary {
  background-color: var(--lz-accent-crimson);
  color: var(--lz-fg-on-crimson);
}

.btn-primary:hover:not(:disabled),
.btn-primary:active:not(:disabled) {
  background-color: var(--lz-accent-crimson-hover);
}

.btn-primary:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-secondary {
  background-color: var(--lz-bg-surface-elevated);
  border-color: var(--lz-border-interactive);
  color: var(--lz-fg-primary);
}

.btn-secondary:hover:not(:disabled) {
  border-color: var(--lz-fg-secondary);
}

.btn-ghost {
  background-color: transparent;
  color: var(--lz-fg-secondary);
}

.btn-ghost:hover:not(:disabled) {
  background-color: var(--lz-bg-surface-elevated);
  color: var(--lz-fg-primary);
}

.btn-danger-outline {
  background-color: transparent;
  border-color: var(--lz-err-fg);
  color: var(--lz-err-fg);
}

.btn-danger {
  background-color: var(--lz-accent-crimson);
  color: var(--lz-fg-on-crimson);
}

.btn-square {
  width: 48px;
  height: 48px;
  padding: 0;
  flex-shrink: 0;
}

.btn-compact {
  min-height: 44px;
  padding: 0 var(--lz-space-3);
  font-size: 0.875rem;
}

.btn-full {
  width: 100%;
}

.btn-icon-text {
  padding: 0 var(--lz-space-3);
  flex-shrink: 0;
}

/* Inputs hardened >= 16px para evitar auto-zoom en iOS */
.text-input {
  width: 100%;
  min-width: 0;
  min-height: 48px;
  padding: var(--lz-space-3) var(--lz-space-4);
  background-color: var(--lz-bg-canvas);
  border: 1px solid var(--lz-border-interactive);
  border-radius: var(--lz-radius-md);
  color: var(--lz-fg-primary);
  font-size: 1rem;
  line-height: 1.4;
  caret-color: var(--lz-link);
}

.text-input::placeholder {
  color: var(--lz-fg-muted);
}

/* ==================== Vista 1: Vinculacion ==================== */
.pairing-view {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--lz-space-4) + env(safe-area-inset-top)) var(--lz-space-4) calc(var(--lz-space-4) + env(safe-area-inset-bottom));
}

.pairing-card {
  width: 100%;
  max-width: 440px;
  min-width: 0;
  background-color: var(--lz-bg-surface);
  border: 1px solid var(--lz-border-subtle);
  border-radius: var(--lz-radius-lg);
  padding: var(--lz-space-5);
}

.pairing-brand {
  display: flex;
  align-items: center;
  gap: var(--lz-space-3);
  margin-bottom: var(--lz-space-5);
}

.brand-mark {
  flex-shrink: 0;
  border-radius: var(--lz-radius-sm);
}

.pairing-title {
  margin: 0 0 var(--lz-space-1);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.25;
  text-wrap: balance;
}

.pairing-subtitle {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--lz-fg-secondary);
  text-wrap: pretty;
}

.pairing-form {
  display: flex;
  flex-direction: column;
  gap: var(--lz-space-4);
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: var(--lz-space-2);
  min-width: 0;
}

.field-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--lz-fg-secondary);
}

.field-hint {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--lz-fg-muted);
}

.password-row {
  display: flex;
  gap: var(--lz-space-2);
  min-width: 0;
}

.inline-alert {
  padding: var(--lz-space-3) var(--lz-space-4);
  border-radius: var(--lz-radius-md);
  font-size: 0.875rem;
  line-height: 1.45;
  border: 1px solid transparent;
}

.inline-alert--error {
  background-color: var(--lz-err-bg);
  border-color: var(--lz-err-fg);
  color: var(--lz-err-fg);
}

/* ==================== Vista 2: Chat ==================== */
.chat-view {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  position: relative;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--lz-space-3);
  min-height: calc(56px + env(safe-area-inset-top));
  padding: env(safe-area-inset-top) var(--lz-space-3) 0 var(--lz-space-4);
  background-color: var(--lz-bg-surface);
  border-bottom: 1px solid var(--lz-border-subtle);
  flex-shrink: 0;
}

.header-identity {
  display: flex;
  align-items: center;
  gap: var(--lz-space-3);
  min-width: 0;
}

.header-mark {
  flex-shrink: 0;
  border-radius: 6px;
}

.header-meta {
  display: flex;
  align-items: center;
  gap: var(--lz-space-2);
  min-width: 0;
}

.header-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--lz-fg-primary);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px var(--lz-space-2);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  background-color: var(--lz-bg-surface-elevated);
  color: var(--lz-fg-secondary);
  border: 1px solid var(--lz-border-subtle);
  white-space: nowrap;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--lz-fg-muted);
  flex-shrink: 0;
}

.status-pill[data-state="online"] {
  background-color: var(--lz-ok-bg);
  color: var(--lz-ok-fg);
  border-color: transparent;
}

.status-pill[data-state="online"] .status-dot {
  background-color: var(--lz-ok-fg);
}

.status-pill[data-state="thinking"] {
  background-color: var(--lz-accent-violet);
  color: var(--lz-fg-primary);
  border-color: transparent;
}

.status-pill[data-state="thinking"] .status-dot {
  background-color: var(--lz-fg-primary);
  animation: lz-pulse 1.2s ease-in-out infinite;
}

.status-pill[data-state="offline"] {
  background-color: var(--lz-warn-bg);
  color: var(--lz-warn-fg);
  border-color: transparent;
}

.status-pill[data-state="offline"] .status-dot {
  background-color: var(--lz-warn-fg);
}

.status-pill[data-state="error"] {
  background-color: var(--lz-err-bg);
  color: var(--lz-err-fg);
  border-color: transparent;
}

.status-pill[data-state="error"] .status-dot {
  background-color: var(--lz-err-fg);
}

@keyframes lz-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

/* Banner de estado */
.status-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--lz-space-3);
  padding: var(--lz-space-2) var(--lz-space-4);
  border-bottom: 1px solid var(--lz-border-subtle);
  flex-shrink: 0;
}

.status-banner[data-tone="warn"] {
  background-color: var(--lz-warn-bg);
  color: var(--lz-warn-fg);
}

.status-banner[data-tone="error"] {
  background-color: var(--lz-err-bg);
  color: var(--lz-err-fg);
}

.status-banner-text {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.4;
  min-width: 0;
}

.status-banner-actions {
  flex-shrink: 0;
}

/* Lista de mensajes */
.messages-scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: var(--lz-space-4);
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

.load-more-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: var(--lz-space-4);
}

.empty-state {
  max-width: 520px;
  margin: var(--lz-space-6) auto;
  padding: var(--lz-space-5);
  background-color: var(--lz-bg-surface);
  border: 1px solid var(--lz-border-subtle);
  border-radius: var(--lz-radius-lg);
}

.empty-title {
  margin: 0 0 var(--lz-space-2);
  font-size: 1.125rem;
  font-weight: 700;
  text-wrap: balance;
}

.empty-copy {
  margin: 0 0 var(--lz-space-4);
  font-size: 0.9375rem;
  color: var(--lz-fg-secondary);
  text-wrap: pretty;
}

.quick-prompts {
  display: flex;
  flex-direction: column;
  gap: var(--lz-space-2);
}

.quick-chip {
  min-height: 48px;
  padding: var(--lz-space-2) var(--lz-space-4);
  background-color: var(--lz-bg-surface-elevated);
  border: 1px solid var(--lz-border-interactive);
  border-radius: var(--lz-radius-md);
  color: var(--lz-fg-primary);
  font-size: 0.9375rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
}

.quick-chip:hover {
  border-color: var(--lz-link);
}

.messages-list {
  list-style: none;
  margin: 0 auto;
  padding: 0;
  max-width: 68ch;
  display: flex;
  flex-direction: column;
  gap: var(--lz-space-4);
}

.msg-item {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.msg-item--user {
  align-items: flex-end;
}

.msg-item--assistant {
  align-items: flex-start;
}

.msg-bubble {
  max-width: 88%;
  min-width: 0;
  padding: var(--lz-space-3) var(--lz-space-4);
  border-radius: var(--lz-radius-lg);
  border: 1px solid var(--lz-border-subtle);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.msg-item--user .msg-bubble {
  background-color: var(--lz-bg-surface-elevated);
  border-bottom-right-radius: 4px;
}

.msg-item--assistant .msg-bubble {
  max-width: 96%;
  background-color: var(--lz-bg-surface);
  border-bottom-left-radius: 4px;
}

.msg-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--lz-space-3);
  margin-bottom: var(--lz-space-1);
  font-size: 0.75rem;
  color: var(--lz-fg-muted);
}

.msg-author {
  font-weight: 700;
  color: var(--lz-fg-secondary);
}

.msg-time {
  font-variant-numeric: tabular-nums;
}

.msg-body {
  font-size: 0.96875rem;
  line-height: 1.58;
  color: var(--lz-fg-primary);
  text-wrap: pretty;
}

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

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

.msg-body p {
  margin: 0 0 var(--lz-space-2);
}

.msg-body h3,
.msg-body h4 {
  margin: var(--lz-space-4) 0 var(--lz-space-2);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.3;
  text-wrap: balance;
}

.msg-body ul,
.msg-body ol {
  margin: 0 0 var(--lz-space-3);
  padding-left: var(--lz-space-5);
}

.msg-body li + li {
  margin-top: var(--lz-space-1);
}

.msg-body blockquote {
  margin: var(--lz-space-2) 0;
  padding: var(--lz-space-2) var(--lz-space-3);
  background-color: var(--lz-bg-canvas);
  border-radius: var(--lz-radius-sm);
  color: var(--lz-fg-secondary);
}

.msg-body a {
  color: var(--lz-link);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.msg-inline-code {
  padding: 2px 6px;
  border-radius: 5px;
  background-color: var(--lz-bg-code);
  border: 1px solid var(--lz-border-subtle);
  color: var(--lz-link);
  font-family: var(--lz-font-mono);
  font-size: 0.875em;
}

.code-block {
  margin: var(--lz-space-3) 0;
  border-radius: var(--lz-radius-md);
  border: 1px solid var(--lz-border-subtle);
  background-color: var(--lz-bg-code);
  overflow: hidden;
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--lz-space-1) var(--lz-space-2) var(--lz-space-1) var(--lz-space-3);
  background-color: var(--lz-bg-surface-elevated);
  border-bottom: 1px solid var(--lz-border-subtle);
  font-family: var(--lz-font-mono);
  font-size: 0.75rem;
  color: var(--lz-fg-secondary);
}

.copy-code-btn {
  min-width: 48px;
  min-height: 44px;
  padding: 0 var(--lz-space-3);
  background-color: transparent;
  border: 1px solid transparent;
  border-radius: var(--lz-radius-sm);
  color: var(--lz-fg-primary);
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
}

.copy-code-btn:hover {
  border-color: var(--lz-border-interactive);
}

.code-block pre {
  margin: 0;
  padding: var(--lz-space-3);
  overflow-x: auto;
  font-family: var(--lz-font-mono);
  font-size: 0.84375rem;
  line-height: 1.5;
  color: var(--lz-fg-primary);
}

/* Indicador de pensamiento/streaming */
.thinking-indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--lz-space-2);
  color: var(--lz-fg-secondary);
  font-size: 0.875rem;
  margin-top: var(--lz-space-1);
}

.thinking-bars {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  height: 14px;
}

.thinking-bars span {
  display: block;
  width: 3px;
  height: 100%;
  border-radius: 2px;
  background-color: var(--lz-link);
  animation: lz-bars 1s ease-in-out infinite;
}

.thinking-bars span:nth-child(2) {
  animation-delay: 150ms;
}

.thinking-bars span:nth-child(3) {
  animation-delay: 300ms;
}

@keyframes lz-bars {
  0%, 100% { transform: scaleY(0.4); opacity: 0.5; }
  50% { transform: scaleY(1); opacity: 1; }
}

.msg-error-note {
  margin-top: var(--lz-space-2);
  padding: var(--lz-space-2) var(--lz-space-3);
  border-radius: var(--lz-radius-sm);
  background-color: var(--lz-err-bg);
  color: var(--lz-err-fg);
  font-size: 0.8125rem;
}

/* Boton flotante ir al final */
.scroll-bottom-btn {
  position: absolute;
  right: var(--lz-space-4);
  bottom: calc(80px + env(safe-area-inset-bottom));
  width: 48px;
  height: 48px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--lz-bg-surface-elevated);
  border: 1px solid var(--lz-border-interactive);
  color: var(--lz-fg-primary);
  cursor: pointer;
  z-index: 10;
}

/* ==================== Composer Inferior ==================== */
.composer-bar {
  padding: var(--lz-space-2) var(--lz-space-3) calc(var(--lz-space-2) + env(safe-area-inset-bottom));
  background-color: var(--lz-bg-surface);
  border-top: 1px solid var(--lz-border-subtle);
  flex-shrink: 0;
}

.composer-form {
  display: flex;
  align-items: flex-end;
  gap: var(--lz-space-2);
  max-width: 68ch;
  margin: 0 auto;
  min-width: 0;
}

.composer-input {
  flex: 1;
  min-width: 0;
  min-height: 48px;
  max-height: 136px;
  padding: var(--lz-space-3) var(--lz-space-4);
  background-color: var(--lz-bg-canvas);
  border: 1px solid var(--lz-border-interactive);
  border-radius: var(--lz-radius-lg);
  color: var(--lz-fg-primary);
  font-size: 1rem;
  line-height: 1.4;
  resize: none;
  overflow-y: auto;
  caret-color: var(--lz-link);
}

.composer-input::placeholder {
  color: var(--lz-fg-muted);
}

.voice-btn[aria-pressed="true"] {
  background-color: var(--lz-accent-crimson);
  color: var(--lz-fg-on-crimson);
}

.send-btn .icon-stop {
  display: none;
}

.send-btn[data-mode="abort"] {
  background-color: var(--lz-accent-violet);
}

.send-btn[data-mode="abort"] .icon-send {
  display: none;
}

.send-btn[data-mode="abort"] .icon-stop {
  display: block;
}

.voice-status {
  margin: var(--lz-space-1) auto 0;
  max-width: 68ch;
  font-size: 0.8125rem;
  color: var(--lz-fg-secondary);
}

/* ==================== Settings Drawer Solido ==================== */
.drawer-backdrop {
  position: fixed;
  inset: 0;
  background-color: var(--lz-bg-backdrop);
  z-index: 35;
}

.settings-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(100vw, 380px);
  background-color: var(--lz-bg-surface-elevated);
  border-left: 1px solid var(--lz-border-subtle);
  z-index: 40;
  display: flex;
  flex-direction: column;
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 56px;
  padding: 0 var(--lz-space-3) 0 var(--lz-space-4);
  border-bottom: 1px solid var(--lz-border-subtle);
}

.drawer-title {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 700;
}

.drawer-body {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: var(--lz-space-4);
  display: flex;
  flex-direction: column;
  gap: var(--lz-space-5);
}

.drawer-section {
  display: flex;
  flex-direction: column;
  gap: var(--lz-space-3);
}

.section-heading {
  margin: 0;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--lz-fg-secondary);
}

.meta-list {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--lz-space-2);
}

.meta-row {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.meta-row dt {
  font-size: 0.75rem;
  color: var(--lz-fg-muted);
}

.meta-row dd {
  margin: 0;
  font-size: 0.875rem;
  color: var(--lz-fg-primary);
}

.mono-wrap {
  font-family: var(--lz-font-mono);
  overflow-wrap: anywhere;
}

.drawer-danger-zone {
  margin-top: auto;
  padding-top: var(--lz-space-4);
  border-top: 1px solid var(--lz-border-subtle);
}

.danger-copy {
  margin: 0;
  font-size: 0.875rem;
  color: var(--lz-fg-secondary);
}

.confirm-box {
  padding: var(--lz-space-3);
  border-radius: var(--lz-radius-md);
  background-color: var(--lz-err-bg);
  border: 1px solid var(--lz-err-fg);
  display: flex;
  flex-direction: column;
  gap: var(--lz-space-3);
}

.confirm-text {
  margin: 0;
  font-size: 0.875rem;
  color: var(--lz-err-fg);
}

.confirm-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--lz-space-2);
}

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