/* ==========================================================================
   Ledger Theme - Design Tokens per UI-SPEC.md
   ========================================================================== */

:root {
  --paper: #FBFAF8;
  --ink: #1C1B1A;
  --ink-soft: #6B6862;
  --rule: #E4E1DA;
  --accent: #1D6FA0;
  --accent-wash: #DCF0FB;
  --amber: #C98A2B;
  --quiet: #9A9790;
  --error: #B3432B;
  --btn-text: #FBFAF8;

  --font-ui: 'General Sans', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'IBM Plex Mono', SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  
  --radius: 4px;
  --max-width: 720px;

  --dur-micro: 150ms;
  --dur-transition: 250ms;
  --ease-micro: ease-out;
  --ease-transition: ease-in-out;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #171613;
    --ink: #EDEAE2;
    --ink-soft: #948F85;
    --rule: #332F29;
    --accent: #7EC8EA;
    --accent-wash: #1D3A4E;
    --amber: #DFA65B;
    --quiet: #716C63;
    --error: #DC8264;
    --btn-text: #1C1B1A;
  }
}

:root[data-theme="dark"] {
  --paper: #171613;
  --ink: #EDEAE2;
  --ink-soft: #948F85;
  --rule: #332F29;
  --accent: #7EC8EA;
  --accent-wash: #1D3A4E;
  --amber: #DFA65B;
  --quiet: #716C63;
  --error: #DC8264;
  --btn-text: #1C1B1A;
}

/* Base Styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  background-color: var(--paper);
  color: var(--ink);
  transition: background-color var(--dur-transition) var(--ease-transition),
              color var(--dur-transition) var(--ease-transition);
}

body {
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Typography Scale */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
}

.page-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
}

.section-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-soft);
}

.meta-data {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-soft);
}

.mono {
  font-family: var(--font-mono);
}

.hairline-divider {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 16px 0;
}

/* Shell & Layout */
.ledger-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.top-bar {
  border-bottom: 1px solid var(--rule);
  padding: 16px 24px;
  width: 100%;
}

.top-bar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-link {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
}

.brand-link:hover {
  color: var(--accent);
}

.top-nav {
  display: flex;
  align-items: center;
  gap: 16px;
}

.user-email {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-soft);
}

.content-container {
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
  padding: 32px 24px 64px 24px;
  flex: 1;
}

/* Buttons & Links */
button {
  font-family: inherit;
  font-size: 15px;
  font-weight: 500;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: var(--radius);
  transition: opacity var(--dur-micro) var(--ease-micro),
              background-color var(--dur-micro) var(--ease-micro),
              color var(--dur-micro) var(--ease-micro);
}

button:focus-visible,
input:focus-visible,
textarea:focus-visible,
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  text-decoration: none;
}

.btn:active {
  opacity: 0.85;
}

.btn-primary {
  background-color: var(--accent);
  color: var(--btn-text);
}

.btn-secondary {
  background-color: transparent;
  color: var(--ink);
  border: 1px solid var(--rule);
}

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

.btn-sm {
  padding: 5px 12px;
  font-size: 14px;
}

.btn-block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.text-link-btn {
  font-size: 14px;
  color: var(--accent);
  text-decoration: none;
  background: none;
  padding: 4px 6px;
  border-radius: var(--radius);
}

.text-link-btn:hover {
  text-decoration: underline;
}

/* Forms */
.form-group {
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

label {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-soft);
}

.optional-label {
  font-size: 12px;
  color: var(--ink-soft);
}

input[type="text"],
input[type="email"],
input[type="password"],
textarea {
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 12px;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background-color: var(--paper);
  color: var(--ink);
  width: 100%;
  transition: border-color var(--dur-micro) var(--ease-micro);
}

input::placeholder,
textarea::placeholder {
  color: var(--ink-soft);
}

input:focus,
textarea:focus {
  border-color: var(--accent);
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.field-error,
.form-error {
  font-size: 13px;
  color: var(--error);
  line-height: 1.4;
}

.field-error:empty,
.form-error:empty {
  display: none;
}

.form-error {
  margin-bottom: 16px;
}

/* View Transitions & Crossfades */
.view {
  opacity: 1;
  transition: opacity var(--dur-transition) var(--ease-transition);
}

.view.hidden {
  display: none !important;
  opacity: 0;
}

/* Auth View */
.auth-view {
  display: flex;
  justify-content: center;
  align-items: center;
  padding-top: 60px;
}

.auth-card {
  width: 100%;
  max-width: 360px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.auth-card .page-title {
  text-align: left;
}

.auth-toggle {
  text-align: left;
}

/* Tickets List View */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

/* Inline New Ticket Panel */
.new-ticket-panel {
  background-color: var(--accent-wash);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 24px;
  border: 1px solid var(--rule);
  overflow: hidden;
  transition: max-height var(--dur-transition) var(--ease-transition),
              opacity var(--dur-transition) var(--ease-transition),
              margin var(--dur-transition) var(--ease-transition),
              padding var(--dur-transition) var(--ease-transition);
  max-height: 600px;
  opacity: 1;
}

.new-ticket-panel.collapsed {
  max-height: 0;
  opacity: 0;
  margin-bottom: 0;
  padding-top: 0;
  padding-bottom: 0;
  border-color: transparent;
  pointer-events: none;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.panel-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 16px;
}

/* Ticket Rows */
.ticket-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--rule);
}

.ticket-row {
  display: grid;
  grid-template-columns: 140px 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--rule);
  text-decoration: none;
  color: var(--ink);
  cursor: pointer;
  border-left: 2px solid transparent;
  transition: background-color var(--dur-micro) var(--ease-micro),
              border-color var(--dur-micro) var(--ease-micro);
}

.ticket-row:hover,
.ticket-row:focus-visible {
  background-color: var(--accent-wash);
  border-left-color: var(--accent);
}

.ticket-row-status {
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.status-dot.status-open {
  background-color: var(--amber);
}

.status-dot.status-in_progress {
  background-color: var(--accent);
}

.status-dot.status-closed {
  border: 1.5px solid var(--quiet);
  background-color: transparent;
}

.status-label {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-soft);
}

.ticket-row-title {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ticket-row.is-closed .ticket-row-title {
  color: var(--ink-soft);
}

.ticket-row-time {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-soft);
  white-space: nowrap;
}

/* Empty State */
.empty-state {
  padding: 48px 16px;
  text-align: left;
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.empty-message {
  color: var(--ink-soft);
  font-size: 15px;
}

/* Detail View */
.detail-nav {
  margin-bottom: 24px;
}

.detail-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 32px;
}

.detail-title-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.detail-meta {
  display: flex;
  align-items: center;
  gap: 8px;
}

.meta-sep {
  color: var(--ink-soft);
}

.detail-status-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 8px;
}

.detail-status-pill .status-text {
  font-size: 14px;
  color: var(--ink);
}

.detail-section {
  margin-bottom: 32px;
}

.detail-description-body {
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--ink);
  font-size: 15px;
  line-height: 1.6;
}

.detail-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 32px;
}

.closed-notice {
  font-size: 14px;
  color: var(--quiet);
  font-style: normal;
}

/* Utility */
.hidden {
  display: none !important;
}

/* Responsive */
@media (max-width: 600px) {
  .ticket-row {
    grid-template-columns: 1fr auto;
    row-gap: 6px;
  }
  .ticket-row-status {
    grid-column: 1 / -1;
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0ms !important;
    animation-duration: 0ms !important;
  }
}