/* ══════════════════════════════════════════════════════
   KALLAM — Design System v2
   Sober · Modern · Distinctive · Animated
   ══════════════════════════════════════════════════════ */

/* ── 1. Design Tokens ─────────────────────────────── */
:root {
  /* Surface */
  --bg:          #f4f3f8;
  --surface:     #ffffff;
  --surface-2:   #f9f8fc;
  --surface-3:   #f1f0f6;

  /* Border */
  --border:      #e2e1ea;
  --border-soft: #ededf4;

  /* Brand — Indigo (distinctive from Meta/X) */
  --accent:      #5b47e0;
  --accent-h:    #4a38cc;
  --accent-dim:  #ede9ff;
  --accent-text: #3b2db5;

  /* Semantic */
  --like:        #e83e5a;
  --like-dim:    #fff0f3;
  --repost:      #10b981;
  --repost-dim:  #ecfdf5;
  --danger:      #dc2626;
  --danger-dim:  #fef2f2;
  --success-dim: #f0fdf4;
  --warn-dim:    #fffbeb;

  /* Text */
  --text:        #15141f;
  --text-2:      #5c5a72;
  --text-3:      #9896b0;

  /* Radius */
  --r-xs: 6px;
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 22px;
  --r-xl: 28px;
  --r-full: 9999px;

  /* Shadow */
  --sh-xs: 0 1px 3px rgba(21, 20, 31, 0.05);
  --sh-sm: 0 2px 8px rgba(21, 20, 31, 0.07);
  --sh-md: 0 4px 20px rgba(21, 20, 31, 0.09);
  --sh-lg: 0 8px 32px rgba(21, 20, 31, 0.11);
  --sh-focus: 0 0 0 3px rgba(91, 71, 224, 0.22);

  /* Motion */
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --t-fast: 130ms ease;
  --t-mid:  220ms var(--ease-out);
  --t-slow: 400ms var(--ease-out);

  /* Layout */
  --header-h: 60px;
  --max-w: 1180px;
  --col-l: 248px;
  --col-r: 284px;

  /* Header surfaces (used for dark mode overrides) */
  --header-bg:   rgba(255, 255, 255, 0.88);
  --sticky-bg:   rgba(255, 255, 255, 0.92);
}

/* ── Dark mode ─────────────────────────────────────── */
[data-theme="dark"] {
  --bg:          #0f0e17;
  --surface:     #1a1827;
  --surface-2:   #211f30;
  --surface-3:   #272540;

  --border:      #2e2c46;
  --border-soft: #242238;

  --accent:      #7c6df4;
  --accent-h:    #6b5de0;
  --accent-dim:  #1e1b40;
  --accent-text: #c4b8ff;

  --like:        #f06080;
  --like-dim:    #3d1522;
  --repost:      #34d399;
  --repost-dim:  #0a2b1e;
  --danger:      #f87171;
  --danger-dim:  #3b1212;
  --success-dim: #0a2b1e;
  --warn-dim:    #2d2510;

  --text:        #eeedf8;
  --text-2:      #9d9bb8;
  --text-3:      #6a6884;

  --sh-xs: 0 1px 3px rgba(0, 0, 0, 0.25);
  --sh-sm: 0 2px 8px rgba(0, 0, 0, 0.35);
  --sh-md: 0 4px 20px rgba(0, 0, 0, 0.45);
  --sh-lg: 0 8px 32px rgba(0, 0, 0, 0.55);
  --sh-focus: 0 0 0 3px rgba(124, 109, 244, 0.38);

  --header-bg:   rgba(26, 24, 39, 0.92);
  --sticky-bg:   rgba(26, 24, 39, 0.96);
}

/* ── 2. Reset & Base ──────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-padding-top: calc(var(--header-h) + 60px);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Manrope", "Segoe UI", system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; }
button { border: 0; cursor: pointer; font: inherit; }

/* ── 3. Header ────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--header-h);
  background: var(--header-bg);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--border-soft);
  box-shadow: var(--sh-xs);
}

.site-header-inner {
  width: min(var(--max-w), 96vw);
  height: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-logo {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--text);
}

.site-logo-mark {
  width: 34px;
  height: 34px;
  border-radius: var(--r-sm);
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 0.95rem;
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 8px rgba(91, 71, 224, 0.35);
  transition: transform var(--t-fast), box-shadow var(--t-fast);
}

.site-logo:hover .site-logo-mark {
  transform: scale(1.08) rotate(-4deg);
  box-shadow: 0 4px 14px rgba(91, 71, 224, 0.45);
}

.site-logo-text {
  font-family: "Sora", "Manrope", sans-serif;
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: 0.12em;
  color: var(--text);
}

.site-nav {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.site-nav a,
.link-button {
  text-decoration: none;
  border: 0;
  background: transparent;
  cursor: pointer;
  padding: 0.4rem 0.7rem;
  border-radius: var(--r-full);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-2);
  transition: background var(--t-fast), color var(--t-fast);
  position: relative;
}

.site-nav a:hover,
.link-button:hover {
  background: var(--accent-dim);
  color: var(--accent-text);
}

.site-nav-cta {
  background: var(--accent) !important;
  color: #fff !important;
  padding: 0.4rem 1rem !important;
  box-shadow: 0 2px 8px rgba(91, 71, 224, 0.28);
  transition: background var(--t-fast), transform var(--t-fast), box-shadow var(--t-fast) !important;
}

.site-nav-cta:hover {
  background: var(--accent-h) !important;
  color: #fff !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(91, 71, 224, 0.38) !important;
}

.inline-form { margin: 0; }

/* ── Dark mode toggle & header lang ───────────────── */
.theme-toggle {
  background: transparent;
  border: 0;
  cursor: pointer;
  width: 34px;
  height: 34px;
  border-radius: var(--r-full);
  display: grid;
  place-items: center;
  font-size: 1rem;
  color: var(--text-2);
  transition: background var(--t-fast), color var(--t-fast);
  flex-shrink: 0;
  line-height: 1;
}

.theme-toggle:hover {
  background: var(--accent-dim);
  color: var(--accent-text);
}

.header-lang-form {
  display: flex;
  align-items: center;
}

.header-lang-select {
  font-size: 0.78rem;
  font-weight: 600;
  font-family: inherit;
  padding: 0.28rem 0.5rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  outline: none;
  transition: border-color var(--t-fast), background var(--t-fast);
  max-width: 72px;
}

.header-lang-select:hover,
.header-lang-select:focus {
  border-color: var(--accent);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: 0.4rem;
  padding-left: 0.6rem;
  border-left: 1px solid var(--border-soft);
}

/* ── 4. Main layout ───────────────────────────────── */
.site-main {
  width: min(var(--max-w), 96vw);
  margin: 1.1rem auto 2rem;
}

/* ── 5. Flash messages ────────────────────────────── */
.messages {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
  display: grid;
  gap: 0.45rem;
  animation: slide-down 0.3s var(--ease-out);
}

.messages li {
  border-radius: var(--r-sm);
  padding: 0.65rem 0.9rem;
  font-size: 0.9rem;
  font-weight: 600;
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.messages li::before { font-size: 1rem; }
.messages li.success  { background: var(--success-dim); border-color: #86efac; color: #166534; }
.messages li.success::before  { content: "✓"; }
.messages li.error    { background: var(--danger-dim);  border-color: #fca5a5; color: #991b1b; }
.messages li.error::before    { content: "✕"; }
.messages li.info     { background: var(--accent-dim);  border-color: #c4b5fd; color: var(--accent-text); }
.messages li.info::before     { content: "ℹ"; }
.messages li.warning  { background: var(--warn-dim);    border-color: #fcd34d; color: #92400e; }

/* ── 6. Buttons ───────────────────────────────────── */
button.primary,
button.secondary,
.btn-primary,
.btn-secondary {
  border-radius: var(--r-full);
  font-weight: 700;
  padding: 0.6rem 1.15rem;
  font-size: 0.9rem;
  transition: background var(--t-fast), transform var(--t-fast), box-shadow var(--t-fast), opacity var(--t-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
}

button.primary, .btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 8px rgba(91, 71, 224, 0.25);
}

button.primary:hover, .btn-primary:hover {
  background: var(--accent-h);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(91, 71, 224, 0.35);
}

button.primary:active, .btn-primary:active {
  transform: translateY(0) scale(0.97);
}

button.primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

button.secondary, .btn-secondary {
  background: var(--surface-3);
  color: var(--text-2);
  border: 1px solid var(--border);
}

button.secondary:hover, .btn-secondary:hover {
  background: var(--surface-2);
  border-color: var(--border);
  transform: translateY(-1px);
}

button.secondary:active, .btn-secondary:active {
  transform: translateY(0) scale(0.97);
}

/* ── 7. Forms ─────────────────────────────────────── */
.form-grid { display: grid; gap: 0.85rem; }

.field { display: grid; gap: 0.3rem; }

.field-double {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.7rem;
}

label {
  font-weight: 700;
  font-size: 0.86rem;
  color: var(--text);
}

.form-input {
  width: 100%;
  border: 1.5px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 0.93rem;
  padding: 0.68rem 0.85rem;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
  outline: none;
}

.form-input::placeholder { color: var(--text-3); }

.form-input:focus {
  border-color: var(--accent);
  box-shadow: var(--sh-focus);
}

textarea.form-input { line-height: 1.5; resize: vertical; }

.input-inline {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 0.5rem;
}

/* Error states */
.error { color: var(--danger); font-size: 0.85rem; font-weight: 600; }

.error-box {
  border-radius: var(--r-sm);
  border: 1.5px solid #fca5a5;
  background: var(--danger-dim);
  color: #991b1b;
  padding: 0.65rem 0.85rem;
  font-size: 0.9rem;
  font-weight: 600;
}

.muted { color: var(--text-2); }

/* ── 8. Auth pages ────────────────────────────────── */
.auth-shell {
  min-height: calc(100vh - 160px);
  display: grid;
  grid-template-columns: 1.1fr minmax(340px, 460px);
  gap: 1.25rem;
  align-items: start;
  padding: 1.5rem 0;
}

.auth-hero {
  background: linear-gradient(145deg, #2d1f8a 0%, #5b47e0 55%, #7c6ff0 100%);
  border-radius: var(--r-xl);
  padding: clamp(1.8rem, 4vw, 3rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.1rem;
  min-height: 460px;
  position: relative;
  overflow: hidden;
}

.auth-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.auth-hero-mark {
  width: 56px;
  height: 56px;
  border-radius: var(--r-md);
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  font-weight: 800;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  position: relative;
}

.auth-hero-kicker {
  margin: 0;
  color: rgba(255, 255, 255, 0.7);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  font-weight: 700;
  position: relative;
}

.auth-hero h1 {
  margin: 0;
  font-family: "Sora", "Manrope", sans-serif;
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  line-height: 1.1;
  color: #fff;
  position: relative;
}

.auth-hero-text {
  margin: 0;
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.97rem;
  max-width: 48ch;
  position: relative;
}

.auth-card {
  background: var(--surface);
  border-radius: var(--r-xl);
  padding: clamp(1.5rem, 4vw, 2.2rem);
  box-shadow: var(--sh-md);
  border: 1px solid var(--border-soft);
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  color: var(--accent);
  font-weight: 700;
}

.auth-card h2 {
  margin: 0.35rem 0 0.15rem;
  font-family: "Sora", "Manrope", sans-serif;
  font-size: 1.65rem;
  color: var(--text);
}

.lead {
  margin: 0 0 1rem;
  color: var(--text-2);
  font-size: 0.93rem;
}

.auth-footer {
  margin: 1rem 0 0;
  font-size: 0.9rem;
  color: var(--text-2);
}

.auth-footer a {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

.auth-footer a:hover { text-decoration: underline; }

/* ── 9. App layout (3 columns) ────────────────────── */
.x-layout {
  display: grid;
  grid-template-columns: var(--col-l) minmax(0, 1fr) var(--col-r);
  gap: 1rem;
  align-items: flex-start;
}

/* Feed column: composer + timeline stacked */
.feed-column {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-width: 0;
}

/* ── 10. Rail cards ───────────────────────────────── */
.rail-card {
  background: var(--surface);
  border-radius: var(--r-md);
  border: 1px solid var(--border-soft);
  box-shadow: var(--sh-xs);
  padding: 1rem;
}

.left-rail,
.right-rail {
  display: grid;
  gap: 0.75rem;
  position: sticky;
  top: calc(var(--header-h) + 0.75rem);
}

/* Profile widget in left rail */
.profile-head {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.avatar-badge {
  width: 40px;
  height: 40px;
  border-radius: var(--r-full);
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 0.9rem;
  background: linear-gradient(135deg, var(--accent-dim), #ddd8ff);
  border: 2px solid var(--border);
  color: var(--accent-text);
  flex-shrink: 0;
  overflow: hidden;
}

.avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* When avatar-img is applied directly on the <img> that IS the badge (not inside a wrapper) */
img.avatar-badge {
  width: 40px;
  height: 40px;
}

img.avatar-badge.avatar-lg {
  width: 70px;
  height: 70px;
}

.profile-name {
  margin: 0;
  font-weight: 800;
  font-size: 0.92rem;
  line-height: 1.2;
}

.profile-handle {
  margin: 0.05rem 0 0;
  font-size: 0.83rem;
  color: var(--text-2);
}

.rail-profile-link {
  display: block;
  text-align: center;
  margin-top: 0.6rem;
  padding: 0.45rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  background: var(--surface-3);
  font-size: 0.85rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--text-2);
  transition: background var(--t-fast), color var(--t-fast);
}

.rail-profile-link:hover { background: var(--accent-dim); color: var(--accent-text); }

.follow-stats {
  display: flex;
  gap: 1rem;
  padding: 0.65rem 0 0;
  font-size: 0.83rem;
  color: var(--text-2);
  border-top: 1px solid var(--border-soft);
  margin-top: 0.65rem;
}

.follow-stats strong { color: var(--text); font-weight: 800; }

.quick-post { margin-top: 0.8rem; }

.rail-post-btn,
.rail-logout-btn { width: 100%; }

/* Rail nav */
.nav-card { padding: 0.75rem; }

.rail-nav {
  display: grid;
  gap: 0.15rem;
  margin-bottom: 0.65rem;
}

.rail-nav a {
  text-decoration: none;
  color: var(--text-2);
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--r-sm);
  padding: 0.55rem 0.7rem;
  transition: background var(--t-fast), color var(--t-fast);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.rail-nav a:hover { background: var(--surface-3); color: var(--text); }
.rail-nav a.active { background: var(--accent-dim); color: var(--accent-text); font-weight: 700; }

/* Right rail widgets */
.stat-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
  margin-top: 0.5rem;
}

.stat-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.88rem;
  color: var(--text-2);
}

.stat-list strong { font-size: 1.15rem; color: var(--text); font-weight: 800; }

.trends {
  list-style: none;
  margin: 0.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.35rem;
}

.trends li {
  border-radius: var(--r-sm);
  padding: 0.48rem 0.65rem;
  font-size: 0.86rem;
  font-weight: 700;
  background: var(--accent-dim);
  color: var(--accent-text);
  cursor: default;
  transition: background var(--t-fast);
}

.trends li:hover { background: #ddd6ff; }

/* ── 11. Composer card (indépendant, toujours visible) ─ */
.composer-card {
  background: var(--surface);
  border-radius: var(--r-md);
  border: 1px solid var(--border-soft);
  box-shadow: var(--sh-sm);
  padding: 1.1rem 1.2rem 0.85rem;
  transition: box-shadow var(--t-mid);
}

.composer-card:focus-within {
  box-shadow: var(--sh-md), 0 0 0 2px var(--accent-dim);
}

#composer { scroll-margin-top: calc(var(--header-h) + 0.75rem); }

.composer-inner {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
}

.composer-avatar {
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.composer-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.composer-input {
  width: 100%;
  min-height: 72px;
  resize: none;
  border: 1.5px solid transparent;
  background: var(--bg);
  border-radius: var(--r-sm);
  padding: 0.7rem 0.85rem;
  font: inherit;
  font-size: 1rem;
  color: var(--text);
  outline: none;
  transition: border-color var(--t-fast), background var(--t-fast), min-height var(--t-mid);
  line-height: 1.5;
}

.composer-input::placeholder {
  color: var(--text-3);
  font-size: 1rem;
}

.composer-input:focus {
  background: var(--surface);
  border-color: var(--accent);
  min-height: 110px;
  box-shadow: var(--sh-focus);
}

.attach-panel { display: grid; gap: 0.6rem; }
.attach-panel[hidden] { display: none; }

.form-file-input { padding: 0.5rem 0.65rem; cursor: pointer; }

.form-file-input::file-selector-button {
  margin-right: 0.65rem;
  border: 0;
  border-radius: var(--r-full);
  padding: 0.35rem 0.75rem;
  background: var(--accent-dim);
  color: var(--accent-text);
  cursor: pointer;
  font-weight: 700;
  font-size: 0.83rem;
  transition: background var(--t-fast);
}

.form-file-input::file-selector-button:hover { background: #ddd6ff; }

.composer-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 0.65rem;
  padding-top: 0.65rem;
  border-top: 1px solid var(--border-soft);
}

.composer-tools {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tool-btn {
  width: 34px;
  height: 34px;
  border-radius: var(--r-full);
  background: transparent;
  border: 1.5px solid var(--border);
  font-size: 1rem;
  display: grid;
  place-items: center;
  color: var(--text-2);
  transition: background var(--t-fast), border-color var(--t-fast), transform var(--t-fast);
}

.tool-btn:hover {
  background: var(--accent-dim);
  border-color: #c4b5fd;
  transform: scale(1.1);
}

.char-counter {
  font-size: 0.8rem;
  color: var(--text-3);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  transition: color var(--t-fast);
}

.char-counter.near-limit { color: #f59e0b; }
.char-counter.over-limit { color: var(--danger); font-weight: 800; }

.composer-submit {
  padding: 0.55rem 1.3rem;
  font-size: 0.9rem;
}

/* ── 12. Timeline (fil de posts) ──────────────────── */
.timeline {
  background: var(--surface);
  border-radius: var(--r-md);
  border: 1px solid var(--border-soft);
  box-shadow: var(--sh-sm);
  overflow: hidden;
}

.timeline-header {
  position: sticky;
  top: var(--header-h);
  z-index: 8;
  padding: 0.9rem 1.1rem;
  border-bottom: 1px solid var(--border-soft);
  background: var(--sticky-bg);
  backdrop-filter: blur(12px);
}

.timeline-header h1 {
  margin: 0;
  font-family: "Sora", "Manrope", sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
}

.timeline-sub {
  margin: 0.18rem 0 0;
  color: var(--text-2);
  font-size: 0.83rem;
}

.feed-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 1.1rem;
  border-bottom: 1px solid var(--border-soft);
  font-size: 0.83rem;
  font-weight: 700;
  color: var(--text-2);
}

.feed-count {
  font-weight: 500;
  color: var(--text-3);
}

/* ── 13. Post cards ───────────────────────────────── */
.posts-grid { display: grid; }

.tweet-card {
  padding: 0.9rem 1.1rem;
  border-bottom: 1px solid var(--border-soft);
  transition: background var(--t-fast);
  animation: post-in 0.35s var(--ease-out) both;
}

.tweet-card:last-child { border-bottom: 0; }
.tweet-card:hover { background: var(--surface-2); }

@keyframes post-in {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.tweet-card:nth-child(1)  { animation-delay: 0ms; }
.tweet-card:nth-child(2)  { animation-delay: 40ms; }
.tweet-card:nth-child(3)  { animation-delay: 80ms; }
.tweet-card:nth-child(4)  { animation-delay: 120ms; }
.tweet-card:nth-child(5)  { animation-delay: 160ms; }
.tweet-card:nth-child(6)  { animation-delay: 200ms; }
.tweet-card:nth-child(7)  { animation-delay: 240ms; }
.tweet-card:nth-child(8)  { animation-delay: 280ms; }
.tweet-card:nth-child(9)  { animation-delay: 320ms; }
.tweet-card:nth-child(10) { animation-delay: 360ms; }

/* Layout avatar + corps */
.tweet-layout {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 0.75rem;
}

.tweet-avatar-col {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.avatar-link {
  text-decoration: none;
  display: grid;
  place-items: center;
}

.tweet-body { min-width: 0; }

.tweet-meta {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin-bottom: 0.4rem;
  line-height: 1.2;
}

.tweet-author {
  font-weight: 800;
  font-size: 0.92rem;
  color: var(--text);
}

.tweet-handle {
  font-size: 0.83rem;
  color: var(--text-2);
  font-weight: 500;
}

.tweet-dot { color: var(--text-3); font-size: 0.75rem; }

.tweet-time {
  font-size: 0.8rem;
  color: var(--text-3);
  text-decoration: none;
  transition: color var(--t-fast);
}

.tweet-time:hover { color: var(--accent); }

.tweet-text {
  margin: 0 0 0.6rem;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.95rem;
  color: var(--text);
}

/* Media */
.tweet-media {
  margin: 0 0 0.7rem;
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--border);
}

.tweet-media img {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
  transition: opacity var(--t-fast);
}

.tweet-video {
  margin: 0 0 0.7rem;
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #000;
}

.tweet-video iframe {
  display: block;
  width: 100%;
  aspect-ratio: 16/9;
  border: 0;
}

.tweet-file-link {
  margin: 0 0 0.7rem;
}

.tweet-file-link a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  text-decoration: none;
  color: var(--accent-text);
  font-weight: 700;
  font-size: 0.86rem;
  background: var(--accent-dim);
  border-radius: var(--r-full);
  padding: 0.35rem 0.75rem;
  border: 1px solid #c4b5fd;
  transition: background var(--t-fast);
}

.tweet-file-link a:hover { background: #ddd6ff; }

/* ── 13. Action buttons ───────────────────────────── */
.tweet-actions {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
  margin-top: 0.1rem;
}

.action-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  border-radius: var(--r-full);
  padding: 0.35rem 0.75rem;
  font-size: 0.83rem;
  font-weight: 700;
  border: 1.5px solid var(--border);
  background: transparent;
  color: var(--text-2);
  cursor: pointer;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast), transform var(--t-fast);
  font-family: inherit;
  line-height: 1;
}

.action-btn:hover {
  background: var(--surface-3);
  border-color: var(--border);
  color: var(--text);
  transform: translateY(-1px);
}

.action-btn:active { transform: scale(0.93); }

/* Like */
.like-btn.is-active {
  background: var(--like-dim);
  border-color: #fda4af;
  color: var(--like);
}

.like-btn:hover {
  background: var(--like-dim);
  border-color: #fda4af;
  color: var(--like);
}

/* Repost */
.repost-btn.is-active {
  background: var(--repost-dim);
  border-color: #6ee7b7;
  color: #059669;
}

.repost-btn:hover {
  background: var(--repost-dim);
  border-color: #6ee7b7;
  color: #059669;
}

/* Report */
.report-btn {
  border-color: #fecaca;
  color: #b91c1c;
}

.report-btn:hover {
  background: var(--danger-dim);
  border-color: #fca5a5;
}

.report-btn.is-reported {
  background: var(--danger-dim);
  border-color: #fca5a5;
  color: var(--danger);
}

/* Like animation */
.like-btn.pop { animation: like-pop 0.35s var(--ease-spring); }

@keyframes like-pop {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.35); }
  70%  { transform: scale(0.9); }
  100% { transform: scale(1); }
}

.reply-btn:hover { background: var(--accent-dim); border-color: #c4b5fd; color: var(--accent-text); }

.empty-feed { text-align: center; padding: 2.5rem; color: var(--text-2); border-bottom: 0 !important; }

/* ── 14. Profile page ─────────────────────────────── */
.avatar-lg {
  width: 70px;
  height: 70px;
  font-size: 1.7rem;
}

.profile-cover-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.profile-cover-identity {
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
}

.profile-bio {
  margin: 0.25rem 0 0;
  font-size: 0.9rem;
  color: var(--text-2);
  line-height: 1.45;
}

.profile-cover-actions {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  align-items: flex-end;
  flex-shrink: 0;
}

/* ── 15. Messaging ────────────────────────────────── */
.inbox-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.inbox-item {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.9rem 1.1rem;
  border-bottom: 1px solid var(--border-soft);
  text-decoration: none;
  color: var(--text);
  transition: background var(--t-fast);
}

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

.inbox-item:last-child { border-bottom: 0; }

.inbox-item-info { flex: 1; min-width: 0; }

.inbox-item-name {
  font-weight: 700;
  font-size: 0.9rem;
  margin: 0 0 0.12rem;
  line-height: 1.2;
}

.inbox-item-preview {
  font-size: 0.83rem;
  color: var(--text-2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin: 0;
}

.inbox-item-time {
  font-size: 0.77rem;
  color: var(--text-3);
  flex-shrink: 0;
}

.unread-badge {
  background: var(--accent);
  color: #fff;
  border-radius: var(--r-full);
  font-size: 0.7rem;
  font-weight: 800;
  padding: 0.1rem 0.42rem;
  min-width: 18px;
  text-align: center;
  display: inline-block;
  box-shadow: 0 2px 6px rgba(91, 71, 224, 0.3);
}

/* Conversation */
.msg-thread {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.1rem;
  overflow-y: auto;
  max-height: calc(100vh - 240px);
  min-height: 200px;
  scroll-behavior: smooth;
}

.msg-row {
  display: flex;
  align-items: flex-end;
  gap: 0.4rem;
  animation: msg-in 0.25s var(--ease-out) both;
}

@keyframes msg-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.msg-row.mine { flex-direction: row-reverse; }

.msg-bubble {
  max-width: 70%;
  padding: 0.58rem 0.9rem;
  border-radius: 18px;
  font-size: 0.9rem;
  line-height: 1.45;
  word-break: break-word;
  white-space: pre-wrap;
}

.msg-bubble.theirs {
  background: var(--surface-3);
  border-bottom-left-radius: 4px;
  color: var(--text);
  border: 1px solid var(--border-soft);
}

.msg-bubble.mine {
  background: var(--accent);
  color: #fff;
  border-bottom-right-radius: 4px;
  box-shadow: 0 2px 8px rgba(91, 71, 224, 0.28);
}

.msg-time {
  font-size: 0.7rem;
  color: var(--text-3);
  flex-shrink: 0;
  padding-bottom: 0.12rem;
}

.msg-composer-form {
  display: flex;
  gap: 0.55rem;
  padding: 0.85rem 1.1rem;
  border-top: 1px solid var(--border-soft);
  background: var(--surface);
  position: sticky;
  bottom: 0;
}

.msg-composer-input {
  flex: 1;
  border: 1.5px solid var(--border);
  border-radius: var(--r-lg);
  padding: 0.6rem 1rem;
  font-family: inherit;
  font-size: 0.9rem;
  resize: none;
  background: var(--surface-3);
  color: var(--text);
  outline: none;
  min-height: 42px;
  max-height: 120px;
  overflow-y: auto;
  line-height: 1.4;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}

.msg-composer-input:focus {
  border-color: var(--accent);
  box-shadow: var(--sh-focus);
  background: var(--surface);
}

/* ── 16. Moderation ───────────────────────────────── */
.mod-table-wrap {
  overflow-x: auto;
}

.mod-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.mod-table th,
.mod-table td {
  padding: 0.65rem 0.85rem;
  text-align: left;
  border-bottom: 1px solid var(--border-soft);
}

.mod-table th {
  font-weight: 700;
  color: var(--text-2);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  background: var(--surface-3);
}

.mod-table tr:hover td { background: var(--surface-2); }

.badge-danger {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: var(--danger-dim);
  border: 1px solid #fca5a5;
  color: var(--danger);
  border-radius: var(--r-full);
  padding: 0.2rem 0.55rem;
  font-size: 0.78rem;
  font-weight: 700;
}

/* ── 17. Shared utilities ─────────────────────────── */
.muted-avatar { opacity: 0.7; }

/* ── 18. Footer ───────────────────────────────────── */
.site-footer {
  width: min(var(--max-w), 96vw);
  margin: 0 auto 1rem;
  border-top: 1px solid var(--border-soft);
  color: var(--text-3);
  font-size: 0.83rem;
}

.footer-inner {
  padding: 0.9rem 0.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.7rem;
  flex-wrap: wrap;
}

.footer-inner p { margin: 0; }
.footer-inner a { color: var(--accent); font-weight: 700; text-decoration: none; }
.footer-inner a:hover { text-decoration: underline; }

/* ── 19. Animations ───────────────────────────────── */
@keyframes slide-down {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes scale-in {
  from { opacity: 0; transform: scale(0.92); }
  to   { opacity: 1; transform: scale(1); }
}

.animate-scale-in { animation: scale-in 0.3s var(--ease-out) both; }
.animate-fade-in  { animation: fade-in 0.3s ease both; }

/* Auth pages animate in */
.auth-shell { animation: fade-in 0.4s ease; }
.auth-card  { animation: scale-in 0.35s var(--ease-out) 0.05s both; }

/* Page transitions */
.app-page .timeline { animation: scale-in 0.3s var(--ease-out) both; }
.app-page .left-rail { animation: fade-in 0.35s ease 0.05s both; }
.app-page .right-rail { animation: fade-in 0.35s ease 0.1s both; }

/* ── 20. Responsive ───────────────────────────────── */
@media (max-width: 1100px) {
  .x-layout {
    grid-template-columns: var(--col-l) minmax(0, 1fr);
  }
  .right-rail { display: none; }
}

@media (max-width: 600px) {
  .tweet-layout {
    grid-template-columns: 34px 1fr;
    gap: 0.55rem;
  }
  .composer-inner { gap: 0.6rem; }
  .composer-avatar { width: 34px; height: 34px; font-size: 0.8rem; }
}

@media (max-width: 860px) {
  .auth-shell {
    grid-template-columns: 1fr;
    min-height: auto;
  }
  .auth-hero { min-height: 200px; padding: 1.5rem; }
  .auth-card { padding: 1.5rem; }

  .x-layout { grid-template-columns: 1fr; }

  .left-rail {
    position: static;
    grid-template-columns: 1fr 1fr;
  }

  .nav-card { grid-column: span 2; }

  .rail-nav {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.2rem;
  }

  .rail-nav a { font-size: 0.83rem; padding: 0.45rem 0.5rem; text-align: center; justify-content: center; }

  .timeline-header { top: var(--header-h); }
}

@media (max-width: 600px) {
  :root { --header-h: 54px; }

  .site-header-inner,
  .site-main,
  .site-footer { width: 95vw; }

  .site-nav { gap: 0.2rem; }
  .site-nav a, .link-button { font-size: 0.83rem; padding: 0.35rem 0.5rem; }
  .site-logo-text { display: none; }

  .field-double { grid-template-columns: 1fr; }

  .auth-hero h1 { font-size: 1.6rem; }

  .left-rail { grid-template-columns: 1fr; }
  .nav-card { grid-column: auto; }

  .composer-tools,
  .composer-media-fields,
  .composer-footer { padding-left: 0; }

  .composer-top { grid-template-columns: 1fr; }
  .composer-top .avatar-badge { display: none; }

  .tweet-card { padding: 0.8rem; }

  .msg-thread { max-height: calc(100vh - 220px); }
}