/* ==========================================================================
   COMPONENTS
   ========================================================================== */

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--control-pad-y) var(--control-pad-x);
  border-radius: var(--control-radius);
  font-size: var(--text-sm);
  font-weight: 600;
  white-space: nowrap;
  transition: transform var(--dur-fast) var(--ease-out),
              background-color var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out);
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--brand-primary);
  color: var(--brand-on-primary);
  box-shadow: var(--shadow-primary);
}
.btn-primary:hover {
  background: var(--brand-primary-hover);
  box-shadow: var(--shadow-primary-hover);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border-strong);
}
.btn-ghost:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}

.btn-inverse {
  background: var(--bg-inverse);
  color: var(--text-on-inverse);
}
.btn-inverse:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-lg { padding: 1rem 2rem; font-size: var(--text-base); }
.btn-sm { padding: 0.55rem 1.1rem; font-size: var(--text-xs); }

.btn-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid var(--border-default);
  color: var(--text-secondary);
  transition: border-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.btn-icon:hover { border-color: var(--brand-primary); color: var(--brand-primary); }

/* ---- Missing states: focus, disabled, loading, danger/success variants ---- */
.btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}
.btn:disabled,
.btn.is-disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
  transform: none !important;
  box-shadow: none !important;
}
.btn.is-loading {
  color: transparent !important;
  pointer-events: none;
  position: relative;
}
.btn.is-loading::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid currentColor;
  border-top-color: transparent;
  color: var(--brand-on-primary);
  animation: btn-spin 0.7s linear infinite;
}
.btn-ghost.is-loading::after,
.btn-icon.is-loading::after { color: var(--text-secondary); }
@keyframes btn-spin { to { transform: rotate(360deg); } }

.btn-danger {
  background: var(--danger);
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}
.btn-danger:hover { background: var(--clay-500); box-shadow: var(--shadow-md); transform: translateY(-1px); }

.btn-success {
  background: var(--success);
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}
.btn-success:hover { background: var(--green-500); box-shadow: var(--shadow-md); transform: translateY(-1px); }

/* ---- Navigation ---- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-4) 0;
  transition: background-color var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out),
              backdrop-filter var(--dur-base) var(--ease-out);
  border-bottom: 1px solid transparent;
}

.nav.is-scrolled {
  background: color-mix(in srgb, var(--bg-page) 85%, transparent);
  backdrop-filter: blur(12px) saturate(1.4);
  -webkit-backdrop-filter: blur(12px) saturate(1.4);
  border-bottom-color: var(--border-default);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-md);
  color: var(--text-primary);
}

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: var(--brand-primary);
  display: grid;
  place-items: center;
  color: var(--brand-on-primary);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: var(--space-1) 0;
  transition: color var(--dur-fast) var(--ease-out);
}
.nav-link:hover { color: var(--text-primary); }
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--brand-primary);
  transition: width var(--dur-base) var(--ease-out);
}
.nav-link:hover::after { width: 100%; }

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }
}

@media (max-width: 480px) {
  .nav-actions .btn-ghost { display: none; }
  .nav-actions { gap: var(--space-2); }
}

/* ---- Theme toggle ---- */
.theme-toggle {
  position: relative;
  width: 52px;
  height: 30px;
  border-radius: var(--radius-full);
  background: var(--bg-accent-tint);
  border: 1.5px solid var(--border-default);
  flex-shrink: 0;
}
.theme-toggle::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--brand-primary);
  transition: transform var(--dur-base) var(--ease-spring);
}
[data-theme="dark"] .theme-toggle::after,
:root:not([data-theme="light"]) .theme-toggle::after {
  transform: translateX(22px);
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) .theme-toggle::after { transform: none; }
}

.theme-toggle .ti-sun,
.theme-toggle .ti-moon {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 13px;
  color: var(--text-muted);
}
.theme-toggle .ti-sun { left: 6px; }
.theme-toggle .ti-moon { right: 6px; }

/* ---- Language switcher ---- */
/* Paired with templates/partials/_language_switcher.html. The
   <select> itself carries the click target and native accessibility/
   keyboard behavior for free — styled to look like a small pill
   button rather than a default browser dropdown, with the globe icon
   layered on top via the wrapping <form>. */
.lang-switch {
  position: relative;
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}
.lang-switch-icon {
  position: absolute;
  left: 10px;
  font-size: 14px;
  color: var(--text-muted);
  pointer-events: none;
}
.lang-switch-select {
  appearance: none;
  -webkit-appearance: none;
  background: var(--bg-surface);
  border: 1.5px solid var(--border-default);
  border-radius: var(--control-radius);
  padding: 6px 28px 6px 30px;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  transition: border-color var(--dur-fast) var(--ease-out);
}
.lang-switch-select:hover { border-color: var(--border-strong); }
.lang-switch-select:focus-visible { outline: none; box-shadow: var(--focus-ring); }
/* Custom chevron — appearance:none removes the native one. */
.lang-switch::after {
  content: '';
  position: absolute;
  right: 10px;
  width: 7px;
  height: 7px;
  border-right: 1.5px solid var(--text-muted);
  border-bottom: 1.5px solid var(--text-muted);
  transform: rotate(45deg);
  pointer-events: none;
}

/* ---- Cards ---- */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  /* A hairline shadow at rest — white cards now sit on the warmer
     parchment page background (tokens.css v4), so a little lift reads
     as a real surface instead of a flat outline. */
  box-shadow: var(--shadow-xs);
  transition: transform var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out);
}

.card-hoverable:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-strong);
}

/* ---- Badge / pill ---- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
}

.pill-signal { background: var(--signal-100); color: var(--signal-600); }
.pill-cove { background: var(--cove-100); color: var(--cove-600); }
[data-theme="dark"] .pill-signal, :root:not([data-theme="light"]) .pill-signal { background: color-mix(in srgb, var(--signal-400) 18%, transparent); color: var(--signal-400); }
[data-theme="dark"] .pill-cove, :root:not([data-theme="light"]) .pill-cove { background: color-mix(in srgb, var(--cove-400) 18%, transparent); color: var(--cove-400); }

/* ---- Avatar stack ---- */
.avatar-stack {
  display: flex;
}
.avatar-stack img {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 2px solid var(--bg-page);
  margin-left: -10px;
  object-fit: cover;
}
.avatar-stack img:first-child { margin-left: 0; }

/* ---- Star rating ---- */
.stars {
  display: inline-flex;
  gap: 2px;
  color: var(--accent-signal);
  font-size: 13px;
}

/* ==========================================================================
   FORMS
   Moved here from panel.css (which only loads on dashboard pages) so
   every page that uses .form-input/.form-select/.form-textarea gets
   proper styling — without this, pages like the public register/login
   forms that don't load panel.css fell back to the browser's native
   input rendering (including native dark-mode styling, which is what
   made inputs look like solid black bars against a light page).
   ========================================================================== */
.form-group { margin-bottom: var(--space-4); }
.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-2);
}
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: var(--field-pad-y) var(--field-pad-x);
  border: 1.5px solid var(--border-default);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  color: var(--text-primary);
  font-size: var(--text-sm);
  font-family: var(--font-body);
  color-scheme: light;
  transition: border-color var(--dur-fast) var(--ease-out);
}
[data-theme="dark"] .form-input,
[data-theme="dark"] .form-select,
[data-theme="dark"] .form-textarea {
  color-scheme: dark;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--brand-primary);
  box-shadow: var(--focus-ring);
}
.form-input:disabled, .form-select:disabled, .form-textarea:disabled {
  background: var(--bg-accent-tint);
  color: var(--text-faint);
  cursor: not-allowed;
  border-color: var(--border-default);
}
.form-input.has-error, .form-select.has-error, .form-textarea.has-error {
  border-color: var(--danger);
}
.form-input.has-error:focus, .form-select.has-error:focus, .form-textarea.has-error:focus {
  box-shadow: 0 0 0 3px hsl(var(--clay-500) / 0.25);
}
.form-input.has-success, .form-select.has-success, .form-textarea.has-success {
  border-color: var(--success);
}
.form-textarea { resize: vertical; min-height: 100px; }
.form-hint { font-size: var(--text-xs); color: var(--text-muted); margin-top: var(--space-1); }
/* Error state pairs an icon with the text — never relies on color
   alone, so the message is legible for colorblind users too. */
.form-error {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: var(--text-xs);
  color: var(--danger);
  margin-top: var(--space-1);
}
.form-error::before { content: "!"; display: inline-flex; align-items: center; justify-content: center; width: 14px; height: 14px; border-radius: 50%; background: var(--danger); color: #fff; font-size: 10px; font-weight: 700; flex-shrink: 0; }
.form-success { display: flex; align-items: center; gap: 4px; font-size: var(--text-xs); color: var(--success); margin-top: var(--space-1); }
.form-success::before { content: "✓"; flex-shrink: 0; }
.form-label .required-mark { color: var(--danger); margin-left: 2px; }

.form-row { display: flex; gap: var(--space-4); }
.form-row .form-group { flex: 1; }

/* ==========================================================================
   BRAND LOCKUP
   Image + wordmark. The text is hidden once a logo image loads, and
   revealed by the img's onerror handler when the file is absent — so
   the header is correct both before and after a logo is supplied.
   ========================================================================== */
.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  text-decoration: none;
}
.brand-lockup-img {
  height: 32px;
  width: auto;
  display: block;
}
/* Text sits alongside the logo by default; if a wordmark is baked into
   the image file itself, add .logo-only to the anchor to hide it. */
.brand-lockup.logo-only .brand-lockup-text { display: none; }

.brand-lockup-text {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}
.brand-lockup-name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}
.brand-lockup-tag {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--accent-strong);
}