/* 社内FAQ AI — shared design system.
   Direction: たより (Tayori) — asking this bot should feel like messaging
   a helpful coworker, not filing an inquiry. Warm peach ground, coral
   accent, real speech-bubble shapes. Light is the default; dark applies
   via prefers-color-scheme AND can be forced either way with [data-theme],
   so the manual toggle always wins — dark stays in the same warm-brown
   family rather than falling back to generic slate. */

:root {
  --bg: #fff1e9;
  --surface: #ffffff;
  --surface-2: #ffede3;
  --surface-hover: #ffe8dc;
  --border: #ffd9c7;
  --border-strong: #ffc2a6;
  --text: #4a2e22;
  --text-2: #8a6e60;
  --text-3: #b29c90;

  --primary: #ff8b6b;
  --primary-hover: #ff7550;
  --primary-soft: #ffe4d6;
  --primary-contrast: #ffffff;

  --success: #2f9e6b;
  --success-soft: #e3f5ec;
  --danger: #e0524a;
  --danger-soft: #fde9e7;
  --warning: #c4841f;
  --warning-soft: #fbf0dd;

  --shadow-sm: 0 1px 2px rgba(74, 46, 34, .08);
  --shadow-md: 0 4px 16px rgba(74, 46, 34, .10);
  --shadow-lg: 0 16px 40px rgba(74, 46, 34, .16);

  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 999px;

  --font: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", "Yu Gothic UI", Meiryo, sans-serif;
  --font-display: "Hiragino Maru Gothic ProN", "Yu Gothic UI", var(--font);
  --ease: cubic-bezier(.2, .8, .2, 1);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1f140d;
    --surface: #2b1d14;
    --surface-2: #35251a;
    --surface-hover: #3d2c1f;
    --border: #4a3527;
    --border-strong: #5c4230;
    --text: #ffe9dd;
    --text-2: #c9a793;
    --text-3: #8f7060;

    --primary: #ff9b7a;
    --primary-hover: #ffb093;
    --primary-soft: rgba(255, 139, 107, .18);
    --primary-contrast: #2b1508;

    --success: #4fcb8f;
    --success-soft: rgba(79, 203, 143, .15);
    --danger: #ff8079;
    --danger-soft: rgba(255, 128, 121, .15);
    --warning: #e8ac4e;
    --warning-soft: rgba(232, 172, 78, .15);

    --shadow-sm: 0 1px 2px rgba(10, 5, 2, .4);
    --shadow-md: 0 4px 16px rgba(10, 5, 2, .45);
    --shadow-lg: 0 16px 40px rgba(10, 5, 2, .55);
  }
}
:root[data-theme="dark"] {
  --bg: #1f140d;
  --surface: #2b1d14;
  --surface-2: #35251a;
  --surface-hover: #3d2c1f;
  --border: #4a3527;
  --border-strong: #5c4230;
  --text: #ffe9dd;
  --text-2: #c9a793;
  --text-3: #8f7060;

  --primary: #ff9b7a;
  --primary-hover: #ffb093;
  --primary-soft: rgba(255, 139, 107, .18);
  --primary-contrast: #2b1508;

  --success: #4fcb8f;
  --success-soft: rgba(79, 203, 143, .15);
  --danger: #ff8079;
  --danger-soft: rgba(255, 128, 121, .15);
  --warning: #e8ac4e;
  --warning-soft: rgba(232, 172, 78, .15);

  --shadow-sm: 0 1px 2px rgba(10, 5, 2, .4);
  --shadow-md: 0 4px 16px rgba(10, 5, 2, .45);
  --shadow-lg: 0 16px 40px rgba(10, 5, 2, .55);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { color-scheme: light dark; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--primary-soft); color: var(--text); }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: var(--radius-full); border: 2px solid var(--bg); }
::-webkit-scrollbar-track { background: transparent; }

a { color: var(--primary); }

/* ---- brand mark ---- */
.brand-mark {
  width: 36px; height: 36px; border-radius: 13px; flex-shrink: 0;
  background: linear-gradient(155deg, #ffab8c, #ff8b6b 55%, #f26a45);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 15px; letter-spacing: -.02em;
  box-shadow: 0 2px 6px rgba(255, 139, 107, .35);
}
.brand-mark svg { width: 19px; height: 19px; }

/* ---- buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  font-family: inherit; font-size: 13.5px; font-weight: 600;
  border-radius: var(--radius-sm); border: 1px solid transparent;
  padding: 8px 16px; cursor: pointer;
  transition: background .15s var(--ease), border-color .15s var(--ease), transform .1s var(--ease), box-shadow .15s var(--ease);
  white-space: nowrap;
}
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .5; cursor: default; transform: none; }
.btn svg { width: 15px; height: 15px; flex-shrink: 0; }

.btn-primary { background: var(--primary); color: var(--primary-contrast); }
.btn-primary:hover:not(:disabled) { background: var(--primary-hover); }

.btn-soft { background: var(--primary-soft); color: var(--primary); }
.btn-soft:hover:not(:disabled) { filter: brightness(1.08); }

.btn-ghost { background: transparent; color: var(--text-2); border-color: var(--border); }
.btn-ghost:hover:not(:disabled) { background: var(--surface-hover); color: var(--text); }

.btn-danger-ghost { background: transparent; color: var(--text-2); border-color: var(--border); }
.btn-danger-ghost:hover:not(:disabled) { background: var(--danger-soft); border-color: var(--danger); color: var(--danger); }

.btn-icon { padding: 8px; border-radius: var(--radius-sm); }

/* ---- inputs ---- */
.input, textarea.input {
  width: 100%; font: inherit; font-size: 14.5px; color: var(--text);
  background: var(--surface); border: 1.5px solid var(--border);
  border-radius: var(--radius-sm); padding: 11px 14px; outline: none;
  transition: border-color .15s var(--ease), box-shadow .15s var(--ease);
}
.input::placeholder { color: var(--text-3); }
.input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }

/* ---- surfaces ---- */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-sm);
}

/* ---- badges/pills ---- */
.pill {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 11.5px; font-weight: 600; border-radius: var(--radius-full);
  padding: 3px 10px; line-height: 1.6;
}
.pill-success { background: var(--success-soft); color: var(--success); }
.pill-danger { background: var(--danger-soft); color: var(--danger); }
.pill-warning { background: var(--warning-soft); color: var(--warning); }
.pill-neutral { background: var(--surface-2); color: var(--text-2); }

/* ---- theme toggle ---- */
.theme-toggle {
  width: 34px; height: 34px; border-radius: var(--radius-full);
  border: 1px solid var(--border); background: var(--surface);
  display: flex; align-items: center; justify-content: center; cursor: pointer;
  color: var(--text-2); transition: background .15s var(--ease), color .15s var(--ease);
}
.theme-toggle:hover { background: var(--surface-hover); color: var(--text); }
.theme-toggle svg { width: 16px; height: 16px; }
.theme-toggle .icon-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-sun { display: none; }
  :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: block; }
}
:root[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

/* ---- skeleton loading ---- */
.skeleton {
  background: linear-gradient(90deg, var(--surface-2) 25%, var(--surface-hover) 37%, var(--surface-2) 63%);
  background-size: 400% 100%;
  animation: skeleton-shine 1.4s ease infinite;
  border-radius: var(--radius-sm);
  color: transparent !important;
}
@keyframes skeleton-shine { 0% { background-position: 100% 0; } 100% { background-position: -100% 0; } }

/* ---- toasts ---- */
#toast-stack {
  position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%);
  z-index: 1000; display: flex; flex-direction: column; gap: 8px; align-items: center;
  pointer-events: none; width: min(92vw, 420px);
}
.toast {
  display: flex; align-items: center; gap: 9px;
  background: var(--text); color: var(--bg);
  font-size: 13.5px; font-weight: 500; padding: 11px 18px;
  border-radius: var(--radius-full); box-shadow: var(--shadow-lg);
  animation: toast-in .25s var(--ease);
  pointer-events: auto; max-width: 100%;
}
:root[data-theme="dark"] .toast { background: var(--surface-2); color: var(--text); border: 1px solid var(--border-strong); }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .toast { background: var(--surface-2); color: var(--text); border: 1px solid var(--border-strong); }
}
.toast.leaving { animation: toast-out .2s var(--ease) forwards; }
.toast svg { width: 15px; height: 15px; flex-shrink: 0; }
.toast.toast-success svg { color: var(--success); }
.toast.toast-error svg { color: var(--danger); }
@keyframes toast-in { from { opacity: 0; transform: translateY(10px) scale(.95); } to { opacity: 1; transform: none; } }
@keyframes toast-out { to { opacity: 0; transform: translateY(6px) scale(.96); } }

/* ---- modal ---- */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(10, 12, 16, .5);
  backdrop-filter: blur(2px);
  display: flex; align-items: center; justify-content: center;
  z-index: 900; padding: 20px; animation: fade-in .15s var(--ease);
}
@keyframes fade-in { from { opacity: 0; } }
.modal {
  background: var(--surface); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
  padding: 26px; width: 100%; max-width: 400px;
  animation: modal-in .2s var(--ease);
}
@keyframes modal-in { from { opacity: 0; transform: translateY(8px) scale(.97); } }
.modal h3 { font-size: 15.5px; margin-bottom: 8px; }
.modal p { font-size: 13.5px; color: var(--text-2); line-height: 1.7; margin-bottom: 20px; }
.modal .modal-actions { display: flex; gap: 10px; justify-content: flex-end; }

/* ---- tables ---- */
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); }
th { color: var(--text-2); font-weight: 600; font-size: 11.5px; text-transform: uppercase; letter-spacing: .03em; }
tr:last-child td { border-bottom: none; }
tbody tr { transition: background .12s var(--ease); }
tbody tr:hover { background: var(--surface-hover); }

/* ---- empty state ---- */
.empty-state {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  color: var(--text-3); padding: 32px 16px; gap: 10px;
}
.empty-state svg { width: 34px; height: 34px; opacity: .5; }
.empty-state span { font-size: 13px; }

/* ---- misc ---- */
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}
button, input, textarea { font-family: inherit; }