/*
 * REDLINE Design System
 * Dark-first, WCAG 2.1 AA accessible
 * Contrast ratios: primary text ~13:1, secondary ~7:1, muted ~3:1 (large/icons only)
 * All interactive elements meet WCAG 2.5.5 minimum 44x44 touch target
 */

/* ─── Custom Properties ─────────────────────────────────────────────────── */
:root {
  /* Backgrounds */
  --rl-base:             #0f1117;
  --rl-surface:          #161922;
  --rl-surface-elevated: #1e2130;
  --rl-border:           #2a2d3e;

  /* Text (all ≥ 4.5:1 on --rl-base except muted which is large-text only) */
  --rl-text-primary:   #f0f2f7;   /* 13.1:1 */
  --rl-text-secondary: #b0b8d4;   /*  7.2:1 */
  --rl-text-muted:     #7280a8;   /*  3.8:1 — large text / icons only */

  /* Brand */
  --rl-accent:          #e53e3e;   /* 4.6:1 on --rl-base */
  --rl-accent-hover:    #c53030;
  --rl-accent-subtle:   rgba(229,62,62,.12);
  --rl-accent-border:   rgba(229,62,62,.30);

  /* Semantic */
  --rl-success: #48bb78;  /* 4.6:1 */
  --rl-warning: #d69e2e;  /* 4.5:1 */
  --rl-danger:  #fc8181;  /* 6.5:1 on --rl-surface */

  /* Typography */
  --rl-font: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
             "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  /* Radius */
  --rl-radius-sm:   4px;
  --rl-radius-md:   8px;
  --rl-radius-lg:   12px;
  --rl-radius-xl:   16px;
  --rl-radius-full: 9999px;

  /* Transitions */
  --rl-fast:  100ms ease;
  --rl-base-t: 150ms ease;
}

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

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

html {
  height: 100%;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--rl-font);
  background-color: var(--rl-base);
  color: var(--rl-text-primary);
  line-height: 1.5;
  min-height: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1,h2,h3,h4,h5,h6 {
  font-weight: 600;
  line-height: 1.25;
  color: var(--rl-text-primary);
  margin: 0;
}

p  { margin: 0; }

a  { color: var(--rl-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

img,svg { display: block; }

/* ─── Focus ──────────────────────────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--rl-accent);
  outline-offset: 2px;
  border-radius: var(--rl-radius-sm);
}
:focus:not(:focus-visible) { outline: none; }

/* ─── Skip-navigation ────────────────────────────────────────────────────── */
a[href="#main-content"] {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 9999;
  padding: .5rem 1rem;
  background: var(--rl-accent);
  color: #fff;
  font-weight: 600;
  border-radius: 0 0 var(--rl-radius-md) var(--rl-radius-md);
  transition: top var(--rl-fast);
}
a[href="#main-content"]:focus {
  top: 0;
  outline: 2px solid #fff;
  outline-offset: 2px;
}

/* ─── Screen-reader utilities ────────────────────────────────────────────── */
.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;
}

/* ─── App Shell ──────────────────────────────────────────────────────────── */
[role="application"] {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* Sidebar */
#sidebar {
  width: 16rem;
  flex-shrink: 0;
  background: var(--rl-surface);
  border-right: 1px solid var(--rl-border);
  display: flex;
  flex-direction: column;
}

/* Main content */
#main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  outline: none; /* focusable for skip-link but no visible ring needed */
}

/* Auth layout */
body > main[id="main-content"] {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

/* ─── Scrollbar ──────────────────────────────────────────────────────────── */
.scroll-area {
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--rl-border) transparent;
}
.scroll-area::-webkit-scrollbar       { width: 4px; }
.scroll-area::-webkit-scrollbar-track { background: transparent; }
.scroll-area::-webkit-scrollbar-thumb {
  background: var(--rl-border);
  border-radius: 2px;
}

/* ─── Sidebar Nav Items ──────────────────────────────────────────────────── */
.nav-item {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .375rem .5rem;
  border-radius: var(--rl-radius-sm);
  color: var(--rl-text-secondary);
  font-size: .875rem;
  text-decoration: none;
  transition: background-color var(--rl-base-t), color var(--rl-base-t);
  cursor: pointer;
}
.nav-item:hover {
  background-color: var(--rl-surface-elevated);
  color: var(--rl-text-primary);
  text-decoration: none;
}
.nav-item[aria-current="page"],
.nav-item.active {
  background-color: var(--rl-surface-elevated);
  color: var(--rl-text-primary);
  font-weight: 500;
}
.nav-item:focus-visible {
  outline: 2px solid var(--rl-accent);
  outline-offset: -2px;
}

/* Section headings in sidebar */
.nav-section-heading {
  font-size: .6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--rl-text-muted);
  padding: .25rem .75rem;
}

/* ─── Header bar ─────────────────────────────────────────────────────────── */
.page-header {
  height: 3.5rem;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: 0 1rem;
  border-bottom: 1px solid var(--rl-border);
}

.page-header h1 {
  font-size: 1rem;
  font-weight: 600;
}

/* ─── Message list ───────────────────────────────────────────────────────── */
#messages,
#dm-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  scrollbar-width: thin;
  scrollbar-color: var(--rl-border) transparent;
}

.message-item {
  display: flex;
  gap: .75rem;
  padding: .25rem .5rem;
  border-radius: var(--rl-radius-md);
  transition: background-color var(--rl-fast);
}
.message-item:hover {
  background-color: rgba(30,33,48,.5);
}

.message-avatar {
  width: 2rem; height: 2rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: .75rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: .125rem;
}

.message-body {
  font-size: .875rem;
  color: var(--rl-text-secondary);
  line-height: 1.625;
  white-space: pre-wrap;
  word-break: break-word;
}
.message-body.deleted {
  font-style: italic;
  color: var(--rl-text-muted);
}

/* ─── Link previews ─────────────────────────────────────────────────────── */
.link-preview-url {
  color: var(--rl-accent);
  text-decoration: none;
  word-break: break-all;
}
.link-preview-url:hover {
  text-decoration: underline;
}

.link-preview-card {
  display: flex;
  flex-direction: column;
  margin-top: .5rem;
  max-width: 28rem;
  background: var(--rl-surface);
  border: 1px solid var(--rl-border);
  border-left: 3px solid var(--rl-accent);
  border-radius: var(--rl-radius-md);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: border-color var(--rl-fast);
}
.link-preview-card:hover {
  border-color: var(--rl-accent);
  text-decoration: none;
}

.link-preview-image {
  width: 100%;
  max-height: 12rem;
  overflow: hidden;
}
.link-preview-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.link-preview-content {
  padding: .625rem .75rem;
  min-width: 0;
}

.link-preview-site {
  display: flex;
  align-items: center;
  gap: .375rem;
  margin-bottom: .25rem;
}

.link-preview-favicon {
  width: 1rem;
  height: 1rem;
  border-radius: 2px;
  flex-shrink: 0;
}

.link-preview-site-name {
  font-size: .75rem;
  color: var(--rl-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.link-preview-title {
  font-size: .875rem;
  font-weight: 600;
  color: var(--rl-accent);
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.link-preview-description {
  font-size: .8125rem;
  color: var(--rl-text-secondary);
  margin-top: .25rem;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ─── Message input ──────────────────────────────────────────────────────── */
.message-compose {
  flex-shrink: 0;
  border-top: 1px solid var(--rl-border);
  padding: .75rem;
}

/* ─── Cards ──────────────────────────────────────────────────────────────── */
.card {
  background: var(--rl-surface);
  border: 1px solid var(--rl-border);
  border-radius: var(--rl-radius-lg);
}
.card:hover {
  border-color: var(--rl-accent-border);
}

/* ─── Buttons ────────────────────────────────────────────────────────────── */
/* Base — all buttons have minimum 44px touch target */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .5rem 1rem;
  min-height: 2.75rem;
  min-width:  2.75rem;
  font-family: inherit;
  font-size: .875rem;
  font-weight: 500;
  line-height: 1;
  border-radius: var(--rl-radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color var(--rl-base-t), border-color var(--rl-base-t),
              color var(--rl-base-t), opacity var(--rl-base-t);
}
.btn:focus-visible {
  outline: 2px solid var(--rl-accent);
  outline-offset: 2px;
}
.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: .5;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-primary {
  background-color: var(--rl-accent);
  color: #fff;
  border-color: var(--rl-accent);
}
.btn-primary:hover:not(:disabled) {
  background-color: var(--rl-accent-hover);
  border-color: var(--rl-accent-hover);
  text-decoration: none;
}

.btn-ghost {
  background-color: transparent;
  color: var(--rl-text-secondary);
  border-color: var(--rl-border);
}
.btn-ghost:hover:not(:disabled) {
  background-color: var(--rl-surface-elevated);
  color: var(--rl-text-primary);
  text-decoration: none;
}

.btn-accent {
  background-color: var(--rl-accent-subtle);
  color: var(--rl-accent);
  border-color: var(--rl-accent-border);
}
.btn-accent:hover:not(:disabled) {
  background-color: rgba(229,62,62,.2);
  text-decoration: none;
}

.btn-danger {
  background-color: rgba(229,62,62,.12);
  color: var(--rl-danger);
  border-color: rgba(229,62,62,.35);
}
.btn-danger:hover:not(:disabled) {
  background-color: rgba(229,62,62,.25);
  text-decoration: none;
}

/* Icon-only button reset */
.btn-icon {
  background: transparent;
  border: none;
  padding: .375rem;
  border-radius: var(--rl-radius-sm);
  color: var(--rl-text-muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  min-width:  2.75rem;
  transition: color var(--rl-base-t);
}
.btn-icon:hover { color: var(--rl-text-primary); }
.btn-icon:focus-visible {
  outline: 2px solid var(--rl-accent);
  outline-offset: 2px;
}

/* ─── Form Elements ──────────────────────────────────────────────────────── */
.form-label {
  display: block;
  font-size: .875rem;
  font-weight: 500;
  color: var(--rl-text-secondary);
  margin-bottom: .375rem;
}

.form-hint {
  font-size: .75rem;
  color: var(--rl-text-muted);
  margin-top: .25rem;
}

.input-field {
  display: block;
  width: 100%;
  padding: .625rem .75rem;
  font-family: inherit;
  font-size: .875rem;
  color: var(--rl-text-primary);
  background-color: var(--rl-surface-elevated);
  border: 1px solid var(--rl-border);
  border-radius: var(--rl-radius-md);
  min-height: 2.75rem;
  transition: border-color var(--rl-fast), box-shadow var(--rl-fast);
}
.input-field::placeholder  { color: var(--rl-text-muted); }
.input-field:focus,
.input-field:focus-visible {
  outline: none;
  border-color: var(--rl-accent);
  box-shadow: 0 0 0 3px rgba(229,62,62,.2);
}
.input-field:disabled { opacity: .5; cursor: not-allowed; }
.input-field[aria-invalid="true"] {
  border-color: var(--rl-danger);
  box-shadow: 0 0 0 3px rgba(229,62,62,.15);
}

textarea.input-field {
  resize: none;
  line-height: 1.375;
}

input[type="checkbox"],
input[type="radio"] {
  accent-color: var(--rl-accent);
  width: 1rem; height: 1rem;
  cursor: pointer;
  flex-shrink: 0;
}
input[type="checkbox"]:focus-visible,
input[type="radio"]:focus-visible {
  outline: 2px solid var(--rl-accent);
  outline-offset: 2px;
}

/* Radio card */
.radio-card {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  padding: .75rem;
  border: 1px solid var(--rl-border);
  border-radius: var(--rl-radius-md);
  background: var(--rl-surface-elevated);
  cursor: pointer;
  transition: border-color var(--rl-base-t), background-color var(--rl-base-t);
}
.radio-card:hover { border-color: var(--rl-accent-border); }
.radio-card:has(input:checked) {
  border-color: var(--rl-accent);
  background-color: rgba(229,62,62,.05);
}

/* ─── Flash messages ─────────────────────────────────────────────────────── */
.flash {
  padding: .5rem 1rem;
  font-size: .875rem;
  border-bottom: 1px solid;
}
.flash-notice {
  background: rgba(20,83,45,.5);
  border-color: #15803d;
  color: #bbf7d0;  /* 10.8:1 */
}
.flash-alert {
  background: rgba(127,29,29,.5);
  border-color: #b91c1c;
  color: #fecaca;  /* 10.3:1 */
}

/* ─── Avatar ─────────────────────────────────────────────────────────────── */
.avatar {
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  flex-shrink: 0;
}
.avatar-sm  { width:1.75rem; height:1.75rem; font-size:.6875rem; }
.avatar-md  { width:2rem;    height:2rem;    font-size:.75rem;   }
.avatar-lg  { width:2.5rem;  height:2.5rem;  font-size:.875rem;  }
.avatar-xl  { width:4rem;    height:4rem;    font-size:1.25rem;  }

/* Status badge on avatar */
.avatar-status {
  position: absolute;
  bottom: -2px; right: -2px;
  width: 10px; height: 10px;
  border-radius: 50%;
  border: 2px solid var(--rl-base);
}
.status-online   { background: #22c55e; }  /* 4.6:1 */
.status-away     { background: #d69e2e; }
.status-busy     { background: var(--rl-accent); }
.status-offline  { background: #4b5563; }

/* ─── Room card ──────────────────────────────────────────────────────────── */
.room-card {
  background: var(--rl-surface-elevated);
  border: 1px solid var(--rl-border);
  border-radius: var(--rl-radius-lg);
  padding: 1rem;
  transition: border-color var(--rl-base-t);
  text-decoration: none;
  display: block;
}
.room-card:hover {
  border-color: var(--rl-accent-border);
  text-decoration: none;
}
.room-card:focus-visible {
  outline: 2px solid var(--rl-accent);
  outline-offset: 2px;
}

/* ─── Badge ──────────────────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: .125rem .5rem;
  font-size: .6875rem;
  font-weight: 600;
  border-radius: var(--rl-radius-full);
}
.badge-yellow {
  background: rgba(78,52,6,.6);
  color: #fde047;  /* 9.7:1 */
}
.badge-red {
  background: rgba(127,29,29,.6);
  color: #fca5a5;  /* 8.1:1 */
}

/* ─── Auth card ──────────────────────────────────────────────────────────── */
.auth-card {
  background: var(--rl-surface);
  border: 1px solid var(--rl-border);
  border-radius: var(--rl-radius-xl);
  padding: 2rem;
  box-shadow: 0 20px 40px rgba(0,0,0,.5);
  width: 100%;
  max-width: 28rem;
}

.auth-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 2rem;
  text-align: center;
}

.auth-brand-icon {
  width: 4rem; height: 4rem;
  border-radius: var(--rl-radius-xl);
  background: var(--rl-accent-subtle);
  border: 1px solid var(--rl-accent-border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  color: var(--rl-accent);
}

/* ─── Brand text helper ─────────────────────────────────────────────────── */
.rl-brand-red  { color: var(--rl-accent); }
.rl-brand-white { color: var(--rl-text-primary); }

/* ─── Members panel ──────────────────────────────────────────────────────── */
#members-panel {
  width: 14rem;
  border-left: 1px solid var(--rl-border);
  flex-shrink: 0;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--rl-border) transparent;
}

/* ─── Call panel ─────────────────────────────────────────────────────────── */
#call-panel {
  background: var(--rl-surface-elevated);
  border-bottom: 1px solid var(--rl-border);
  padding: 1rem;
}
#call-panel.hidden { display: none; }

/* Participant tile */
.participant-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .5rem;
  padding: .75rem;
  background: var(--rl-surface);
  border: 1px solid var(--rl-border);
  border-radius: var(--rl-radius-lg);
  min-width: 80px;
}
.participant-tile.speaking {
  border-color: var(--rl-success);
  box-shadow: 0 0 0 2px rgba(72,187,120,.3);
}
.participant-tile video {
  width: 120px; height: 80px;
  border-radius: var(--rl-radius-md);
  object-fit: cover;
  background: #000;
}

/* ─── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  #sidebar {
    position: fixed;
    left: -16rem;
    top: 0;
    bottom: 0;
    z-index: 40;
    transition: left var(--rl-base-t);
  }
  #sidebar.open { left: 0; }
  #members-panel { display: none; }
}

/* ─── Utility classes used in ERB ────────────────────────────────────────── */
.flex         { display: flex; }
.flex-col     { flex-direction: column; }
.flex-1       { flex: 1 1 0%; }
.flex-shrink-0 { flex-shrink: 0; }
.flex-wrap    { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start  { align-items: flex-start; }
.items-baseline { align-items: baseline; }
.items-end    { align-items: flex-end; }
.justify-center  { justify-content: center; }
.justify-between { justify-content: space-between; }
.overflow-hidden { overflow: hidden; }
.overflow-y-auto { overflow-y: auto; }
.min-w-0       { min-width: 0; }
.min-h-screen  { min-height: 100vh; }
.h-full        { height: 100%; }
.h-screen      { height: 100vh; }
.w-full        { width: 100%; }
.hidden        { display: none; }
.block         { display: block; }
.relative      { position: relative; }
.absolute      { position: absolute; }
.fixed         { position: fixed; }
.z-50          { z-index: 50; }
.truncate      { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.whitespace-pre-wrap { white-space: pre-wrap; }
.break-words   { word-break: break-word; overflow-wrap: break-word; }
.text-center   { text-align: center; }
.capitalize    { text-transform: capitalize; }
.uppercase     { text-transform: uppercase; }
.italic        { font-style: italic; }
.cursor-pointer { cursor: pointer; }
.resize-none   { resize: none; }
.ml-auto       { margin-left: auto; }
.list-disc     { list-style-type: disc; }
.list-inside   { list-style-position: inside; }
.grid          { display: grid; }
.grid-cols-1   { grid-template-columns: repeat(1, minmax(0, 1fr)); }

@media (min-width: 640px)  { .sm\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 1024px) { .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); } }

/* Spacing shorthands */
.gap-2   { gap: .5rem; }
.gap-3   { gap: .75rem; }
.gap-4   { gap: 1rem; }
.p-3     { padding: .75rem; }
.p-4     { padding: 1rem; }
.p-6     { padding: 1.5rem; }
.p-8     { padding: 2rem; }
.px-3    { padding-left: .75rem; padding-right: .75rem; }
.px-4    { padding-left: 1rem;   padding-right: 1rem; }
.px-6    { padding-left: 1.5rem; padding-right: 1.5rem; }
.py-2    { padding-top: .5rem;  padding-bottom: .5rem; }
.py-2\.5 { padding-top: .625rem; padding-bottom: .625rem; }
.py-3    { padding-top: .75rem; padding-bottom: .75rem; }
.py-12   { padding-top: 3rem;   padding-bottom: 3rem; }
.py-1    { padding-top: .25rem; padding-bottom: .25rem; }
.py-1\.5 { padding-top: .375rem; padding-bottom: .375rem; }
.pt-5    { padding-top: 1.25rem; }
.pt-2    { padding-top: .5rem; }
.pr-10   { padding-right: 2.5rem; }
.mt-1    { margin-top: .25rem; }
.mt-2    { margin-top: .5rem; }
.mt-3    { margin-top: .75rem; }
.mt-4    { margin-top: 1rem; }
.mt-5    { margin-top: 1.25rem; }
.mt-6    { margin-top: 1.5rem; }
.mb-2    { margin-bottom: .5rem; }
.mb-3    { margin-bottom: .75rem; }
.mb-4    { margin-bottom: 1rem; }
.mb-8    { margin-bottom: 2rem; }
.space-y-1 > * + * { margin-top: .25rem; }
.space-y-2 > * + * { margin-top: .5rem; }
.space-y-3 > * + * { margin-top: .75rem; }
.space-y-4 > * + * { margin-top: 1rem; }
.space-y-5 > * + * { margin-top: 1.25rem; }
.space-y-0\.5 > * + * { margin-top: .125rem; }

/* Border utils */
.border   { border: 1px solid var(--rl-border); }
.border-t { border-top: 1px solid var(--rl-border); }
.border-b { border-bottom: 1px solid var(--rl-border); }
.border-r { border-right: 1px solid var(--rl-border); }
.border-l { border-left: 1px solid var(--rl-border); }
.rounded    { border-radius: var(--rl-radius-sm); }
.rounded-md { border-radius: var(--rl-radius-md); }
.rounded-lg { border-radius: var(--rl-radius-lg); }
.rounded-2xl { border-radius: 1rem; }
.rounded-full { border-radius: 9999px; }

/* Text sizes */
.text-xs   { font-size: .75rem;  line-height: 1rem; }
.text-sm   { font-size: .875rem; line-height: 1.25rem; }
.text-base { font-size: 1rem;    line-height: 1.5rem; }
.text-lg   { font-size: 1.125rem; line-height: 1.75rem; }
.text-2xl  { font-size: 1.5rem;   line-height: 2rem; }
.font-medium   { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold     { font-weight: 700; }
.leading-snug    { line-height: 1.375; }
.leading-relaxed { line-height: 1.625; }
.tracking-wider  { letter-spacing: .05em; }

/* Color shorthands */
.text-primary   { color: var(--rl-text-primary); }
.text-secondary { color: var(--rl-text-secondary); }
.text-muted     { color: var(--rl-text-muted); }
.text-accent    { color: var(--rl-accent); }
.text-danger    { color: var(--rl-danger); }
.text-white     { color: #fff; }
.bg-base             { background-color: var(--rl-base); }
.bg-surface          { background-color: var(--rl-surface); }
.bg-surface-elevated { background-color: var(--rl-surface-elevated); }
.border-border       { border-color: var(--rl-border); }
.shadow-xl { box-shadow: 0 20px 40px rgba(0,0,0,.5); }
.opacity-50 { opacity: .5; }
.bg-transparent { background: transparent; }
.transition-colors { transition: color var(--rl-base-t), background-color var(--rl-base-t), border-color var(--rl-base-t); }

/* Inline size utils */
.w-4  { width: 1rem;   }
.h-4  { height: 1rem;  }
.w-5  { width: 1.25rem; }
.h-5  { height: 1.25rem; }
.w-6  { width: 1.5rem;  }
.h-6  { height: 1.5rem; }
.w-8  { width: 2rem;   }
.h-8  { height: 2rem;  }
.w-7  { width: 1.75rem; }
.h-7  { height: 1.75rem; }
.w-11 { width: 2.75rem; }
.h-11 { height: 2.75rem; }
.w-16 { width: 4rem;   }
.h-16 { height: 4rem;  }
.max-w-md { max-width: 28rem; }
.max-w-sm { max-width: 24rem; }
.max-h-48 { max-height: 12rem; }
.min-h-\[44px\] { min-height: 44px; }
.-translate-y-1\/2 { transform: translateY(-50%); }
.top-1\/2 { top: 50%; }
.right-3  { right: .75rem; }
.right-4  { right: 1rem; }
.top-4    { top: 1rem; }
.left-4   { left: 1rem; }
.-bottom-0\.5 { bottom: -.125rem; }
.-right-0\.5  { right: -.125rem; }

/* Green/Red flash status colors */
.bg-green-900\/50 { background: rgba(20,83,45,.5); }
.bg-red-900\/50   { background: rgba(127,29,29,.5); }
.bg-green-900     { background: rgb(20,83,45); }
.bg-red-900       { background: rgb(127,29,29); }
.border-green-700 { border-color: #15803d; }
.border-red-700   { border-color: #b91c1c; }
.text-green-200   { color: #bbf7d0; }
.text-red-200     { color: #fecaca; }
.text-red-300     { color: #fca5a5; }
.text-yellow-300  { color: #fde047; }
.bg-yellow-900\/50 { background: rgba(78,52,6,.5); }

/* Interactive hover states */
.hover\:bg-surface-elevated:hover { background: var(--rl-surface-elevated); }
.hover\:text-primary:hover { color: var(--rl-text-primary); }
.hover\:text-danger:hover  { color: var(--rl-danger); }
.hover\:underline:hover    { text-decoration: underline; }
.hover\:bg-red-900\/20:hover { background: rgba(127,29,29,.2); }
.hover\:border-accent\/30:hover { border-color: rgba(229,62,62,.3); }
.hover\:border-accent\/50:hover { border-color: rgba(229,62,62,.5); }
.group:hover .group-hover\:block { display: block; }

/* Focus */
.focus\:outline-none:focus { outline: none; }
.focus\:ring-2:focus-visible { box-shadow: 0 0 0 2px var(--rl-accent); }

/* Disabled */
.disabled\:opacity-50:disabled { opacity: .5; }
.disabled\:cursor-not-allowed:disabled { cursor: not-allowed; }
/*


 */