/**
 * Liofo — boutons chunky chromatiques (handoff §2–§5)
 * Marqueur : LF-BTN-SYSTEM-20260722
 * Source : docs/design/liofo-boutons-handoff.md
 */

:root {
  --lf-green: #00BF63;
  --lf-green-edge: #008f4a;
  --lf-on-green: #05130c;
  --lf-blue: #0CC0DF;
  --lf-blue-edge: #0895ac;
  --lf-on-blue: #04222b;
  --lf-pink: #FF66C4;
  --lf-pink-edge: #e23fa3;
  --lf-on-pink: #2b0a1f;
  --lf-danger: #ff5563;
  --lf-danger-edge: #d63a48;
  --lf-on-danger: #ffffff;

  --lf-green-soft: rgba(0, 191, 99, 0.15);
  --lf-green-soft-text: #2fe08a;
  --lf-blue-soft: rgba(12, 192, 223, 0.15);
  --lf-blue-soft-text: #5ee9ff;
  --lf-pink-soft: rgba(255, 102, 196, 0.15);
  --lf-pink-soft-text: #ff8fd9;

  --lf-ink: #f4f4f7;
  --lf-ink-soft: #b6b6c2;
  --lf-muted: #7a7a86;
  --lf-bg: #0b0b0e;
  --lf-surface: #16161b;
  --lf-surface-2: #0f0f13;
  --lf-border: #2a2a32;

  --lf-disabled-bg: #23232a;
  --lf-disabled-edge: #141418;
  --lf-disabled-text: #5c5c66;

  --lf-radius-sm: 11px;
  --lf-radius-md: 14px;
  --lf-radius-lg: 17px;
  --lf-focus-ring: #3ee08f;
  --lf-font: var(--liofo-font-title, 'Nikumaru', sans-serif);
  --lf-letter-spacing: var(--liofo-letter-spacing-title, 0.05em);
  --lf-ease: 120ms;
}

.lf-btn {
  font-family: var(--lf-font);
  font-size: 16px;
  line-height: 1.1;
  font-weight: 400;
  font-synthesis: none;
  letter-spacing: var(--lf-letter-spacing);
  border: none;
  cursor: pointer;
  border-radius: var(--lf-radius-md);
  padding: 14px 26px;
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  text-align: center;
  white-space: normal;
  box-sizing: border-box;
  text-decoration: none;
  transition:
    transform var(--lf-ease) ease,
    box-shadow var(--lf-ease) ease,
    filter var(--lf-ease) ease,
    background-color var(--lf-ease) ease,
    color var(--lf-ease) ease;
}

.lf-btn--sm {
  padding: 9px 18px;
  min-height: 36px;
  font-size: 14px;
  border-radius: var(--lf-radius-sm);
}

.lf-btn--lg {
  padding: 18px 34px;
  min-height: 60px;
  font-size: 20px;
  border-radius: var(--lf-radius-lg);
}

.lf-btn--full {
  width: 100%;
}

.lf-btn--icon-only {
  padding: 9px;
  min-width: 44px;
  width: 44px;
}

/* Solid — chunky */
.lf-btn--green {
  color: var(--lf-on-green);
  background: var(--lf-green);
  box-shadow: 0 4px 0 var(--lf-green-edge), 0 7px 16px rgba(0, 191, 99, 0.4);
}

.lf-btn--blue {
  color: var(--lf-on-blue);
  background: var(--lf-blue);
  box-shadow: 0 4px 0 var(--lf-blue-edge), 0 7px 16px rgba(12, 192, 223, 0.35);
}

.lf-btn--pink {
  color: var(--lf-on-pink);
  background: var(--lf-pink);
  box-shadow: 0 4px 0 var(--lf-pink-edge), 0 7px 16px rgba(255, 102, 196, 0.35);
}

.lf-btn--danger {
  color: var(--lf-on-danger);
  background: var(--lf-danger);
  box-shadow: 0 4px 0 var(--lf-danger-edge), 0 7px 16px rgba(255, 85, 99, 0.35);
}

.lf-btn--green:hover,
.lf-btn--blue:hover,
.lf-btn--pink:hover,
.lf-btn--danger:hover {
  filter: brightness(1.06);
}

.lf-btn--green:active,
.lf-btn--blue:active,
.lf-btn--pink:active,
.lf-btn--danger:active {
  transform: translateY(3px);
}

.lf-btn--green:active { box-shadow: 0 1px 0 var(--lf-green-edge); }
.lf-btn--blue:active { box-shadow: 0 1px 0 var(--lf-blue-edge); }
.lf-btn--pink:active { box-shadow: 0 1px 0 var(--lf-pink-edge); }
.lf-btn--danger:active { box-shadow: 0 1px 0 var(--lf-danger-edge); }

/* Soft */
.lf-btn--green.lf-btn--soft {
  color: var(--lf-green-soft-text);
  background: var(--lf-green-soft);
  box-shadow: none;
  filter: none;
}

.lf-btn--blue.lf-btn--soft {
  color: var(--lf-blue-soft-text);
  background: var(--lf-blue-soft);
  box-shadow: none;
}

.lf-btn--pink.lf-btn--soft {
  color: var(--lf-pink-soft-text);
  background: var(--lf-pink-soft);
  box-shadow: none;
}

.lf-btn--soft:hover {
  filter: brightness(1.08);
}

.lf-btn--soft:active {
  transform: translateY(2px);
  box-shadow: none;
}

/* Outline */
.lf-btn--outline {
  background: transparent;
  box-shadow: none;
  border: 2.5px solid currentColor;
}

.lf-btn--green.lf-btn--outline { color: var(--lf-green-soft-text); }
.lf-btn--blue.lf-btn--outline { color: var(--lf-blue-soft-text); }
.lf-btn--pink.lf-btn--outline { color: var(--lf-pink-soft-text); }
.lf-btn--danger.lf-btn--outline { color: var(--lf-danger); }

.lf-btn--outline:hover {
  filter: none;
  background: rgba(255, 255, 255, 0.06);
}

.lf-btn--outline:active {
  transform: translateY(2px);
}

/* Ghost */
.lf-btn--ghost {
  color: var(--lf-ink-soft);
  background: transparent;
  box-shadow: none;
}

.lf-btn--ghost:hover {
  filter: none;
  background: #23232a;
  color: var(--lf-ink);
}

.lf-btn--ghost:active {
  transform: translateY(2px);
  box-shadow: none;
}

/* Focus / disabled / loading */
.lf-btn:focus {
  outline: none;
}

.lf-btn:focus-visible {
  outline: 3px solid var(--lf-focus-ring);
  outline-offset: 6px;
}

.lf-btn:disabled,
.lf-btn.is-disabled {
  background: var(--lf-disabled-bg) !important;
  color: var(--lf-disabled-text) !important;
  box-shadow: 0 2px 0 var(--lf-disabled-edge) !important;
  cursor: not-allowed;
  filter: none !important;
  transform: none !important;
  border-color: transparent !important;
}

.lf-btn.is-loading {
  cursor: progress;
  pointer-events: none;
  position: relative;
  color: transparent !important;
}

.lf-btn.is-loading::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: lf-btn-spin 0.7s linear infinite;
}

.lf-btn--green.is-loading::after {
  border-color: rgba(5, 19, 12, 0.25);
  border-top-color: var(--lf-on-green);
}

@keyframes lf-btn-spin {
  to { transform: rotate(360deg); }
}

/* LF-SEARCH-20260722 — champ recherche (handoff §7) */
.lf-search {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  min-height: 48px;
}

.lf-search__toggle {
  flex: 0 0 auto;
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 2px solid var(--lf-border);
  background: var(--lf-surface-2);
  color: var(--lf-ink-soft);
  cursor: pointer;
  padding: 0;
  transition:
    background var(--lf-ease) ease,
    border-color var(--lf-ease) ease,
    color var(--lf-ease) ease;
}

.lf-search__toggle:hover {
  background: #1c1c22;
  color: var(--lf-ink);
  border-color: var(--lf-green);
}

.lf-search__toggle:focus {
  outline: none;
}

.lf-search__toggle:focus-visible {
  outline: 3px solid var(--lf-focus-ring);
  outline-offset: 4px;
}

.lf-search__icon {
  width: 19px;
  height: 19px;
  display: block;
}

.lf-search__field {
  display: none;
  align-items: center;
  gap: 10px;
  background: var(--lf-surface-2);
  border: 2px solid var(--lf-border);
  border-radius: var(--lf-radius-md);
  padding: 12px 16px;
  margin: 0;
  min-width: min(100%, 15rem);
  box-sizing: border-box;
  transition: border-color var(--lf-ease) ease;
}

.lf-search.is-expanded .lf-search__field,
.lf-search:focus-within .lf-search__field {
  display: flex;
}

.lf-search.is-expanded .lf-search__toggle,
.lf-search:focus-within .lf-search__toggle {
  display: none;
}

.lf-search__prefix {
  flex: 0 0 auto;
  color: var(--lf-muted);
  line-height: 0;
}

.lf-search__input {
  flex: 1 1 auto;
  min-width: 0;
  width: 100%;
  border: none;
  outline: none;
  background: transparent;
  color: var(--lf-ink);
  font-family: var(--liofo-font-body, var(--lf-font));
  font-size: 16px;
  line-height: 1.35;
}

.lf-search__input::placeholder {
  color: var(--lf-muted);
}

.lf-search__field:focus-within {
  border-color: var(--lf-green);
}

.lf-select {
  appearance: none;
  background: var(--lf-surface-2);
  border: 2px solid var(--lf-border);
  border-radius: var(--lf-radius-md);
  color: var(--lf-ink);
  font-family: var(--lf-font);
  font-size: 16px;
  line-height: 1.2;
  letter-spacing: var(--lf-letter-spacing);
  padding: 12px 2.2rem 12px 16px;
  min-height: 48px;
  cursor: pointer;
  background-image: linear-gradient(45deg, transparent 50%, var(--lf-muted) 50%),
    linear-gradient(135deg, var(--lf-muted) 50%, transparent 50%);
  background-position: calc(100% - 18px) calc(50% + 2px), calc(100% - 12px) calc(50% + 2px);
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
}

.lf-select:focus {
  outline: none;
  border-color: var(--lf-green);
}

.lf-select:focus-visible {
  outline: 3px solid var(--lf-focus-ring);
  outline-offset: 4px;
}