:root {
  color-scheme: light;
  --bg: #f7f5f1;
  --surface: #ffffff;
  --ink: #1f1d1a;
  --ink-2: #5b5750;
  --ink-3: #8a857c;
  --line: #e4e0d8;
  --accent: #3d6b5a;
  --accent-ink: #ffffff;
  --me: #e8efe9;
  --warn-bg: #fff4e5;
  --warn-line: #e3a44b;
  --danger: #b3261e;
  --series-1: #2a78d6;
  --radius: 14px;
  font-size: 17px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #161514;
    --surface: #1f1e1c;
    --ink: #f1efe9;
    --ink-2: #c3bfb6;
    --ink-3: #8f8a80;
    --line: #34322e;
    --accent: #7fb49f;
    --accent-ink: #10201a;
    --me: #26332d;
    --warn-bg: #33291a;
    --warn-line: #c98500;
    --danger: #f2837b;
    --series-1: #3987e5;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #161514; --surface: #1f1e1c; --ink: #f1efe9; --ink-2: #c3bfb6; --ink-3: #8f8a80; --line: #34322e;
  --accent: #7fb49f; --accent-ink: #10201a; --me: #26332d; --warn-bg: #33291a; --warn-line: #c98500; --danger: #f2837b; --series-1: #3987e5;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: "Pretendard", "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
button, input, textarea { font: inherit; color: inherit; }
a { color: var(--accent); }
.hidden { display: none !important; }

/* 공통 */
.center { min-height: 100%; display: flex; align-items: center; justify-content: center; padding: 24px 16px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 24px; width: 100%; max-width: 440px; }
.brand { font-size: 1.5rem; font-weight: 700; letter-spacing: -0.02em; margin: 0 0 4px; }
.sub { color: var(--ink-2); margin: 0 0 24px; }
label.field { display: block; margin-bottom: 14px; }
label.field span { display: block; font-size: 0.9rem; color: var(--ink-2); margin-bottom: 4px; }
input[type=email], input[type=password] {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg);
}
input:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.btn { display: block; width: 100%; padding: 13px; border: 0; border-radius: 10px; background: var(--accent); color: var(--accent-ink); font-weight: 600; cursor: pointer; }
.btn:disabled { opacity: 0.5; cursor: default; }
.btn.ghost { background: transparent; color: var(--ink-2); border: 1px solid var(--line); }
.link { background: none; border: 0; color: var(--ink-2); text-decoration: underline; cursor: pointer; padding: 8px 0; }
.error { color: var(--danger); font-size: 0.92rem; min-height: 1.4em; margin: 6px 0; }
.tabs { display: flex; gap: 4px; margin-bottom: 20px; background: var(--bg); padding: 4px; border-radius: 10px; }
.tabs button { flex: 1; border: 0; background: none; padding: 9px; border-radius: 8px; cursor: pointer; color: var(--ink-2); }
.tabs button.on { background: var(--surface); color: var(--ink); font-weight: 600; box-shadow: 0 1px 2px rgba(0,0,0,.08); }
.check { display: flex; gap: 10px; align-items: flex-start; margin: 10px 0; font-size: 0.93rem; }
.check input { margin-top: 5px; width: 18px; height: 18px; flex: none; }
details.terms { font-size: 0.85rem; color: var(--ink-2); margin: -4px 0 8px 28px; }
details.terms summary { cursor: pointer; }

/* 척도 */
.q-progress { color: var(--ink-3); font-size: 0.85rem; margin-bottom: 8px; }
.q-text { font-size: 1.15rem; font-weight: 600; margin: 0 0 20px; min-height: 3.2em; }
.options { display: grid; gap: 8px; }
.options button { text-align: left; padding: 14px 16px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); cursor: pointer; }
.options button:hover { border-color: var(--accent); }

/* 위기 안내 */
.crisis { background: var(--warn-bg); border: 1px solid var(--warn-line); border-radius: 12px; padding: 14px 16px; margin: 12px 0; font-size: 0.95rem; }
.crisis strong { display: block; margin-bottom: 6px; }
.crisis a { display: inline-block; margin: 4px 12px 0 0; font-weight: 700; color: var(--ink); }

/* 대화 */
.chat { display: flex; flex-direction: column; height: 100%; max-width: 760px; margin: 0 auto; }
.chat header { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.chat header .brand { font-size: 1.15rem; margin: 0; }
.icon-btn { background: none; border: 0; padding: 8px; cursor: pointer; color: var(--ink-2); border-radius: 8px; }
.icon-btn:hover { background: var(--line); }
#log { flex: 1; overflow-y: auto; padding: 20px 16px; }
.msg { max-width: 85%; margin: 0 0 14px; padding: 12px 16px; border-radius: 16px; white-space: pre-wrap; word-break: keep-all; overflow-wrap: anywhere; }
.msg.assistant { background: var(--surface); border: 1px solid var(--line); border-top-left-radius: 4px; }
.msg.user { background: var(--me); margin-left: auto; border-top-right-radius: 4px; }
.msg.typing { color: var(--ink-3); }
.empty { color: var(--ink-2); text-align: center; margin-top: 18vh; padding: 0 16px; }
.composer { display: flex; gap: 8px; padding: 12px 16px 6px; border-top: 1px solid var(--line); align-items: flex-end; }
.composer textarea { flex: 1; resize: none; max-height: 40vh; padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); line-height: 1.5; }
.composer .btn { width: auto; padding: 12px 18px; }
.foot { text-align: center; font-size: 0.78rem; color: var(--ink-3); padding: 0 16px 10px; }

/* 메뉴 */
.menu { position: absolute; right: 12px; top: 56px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 6px; min-width: 220px; box-shadow: 0 8px 24px rgba(0,0,0,.12); z-index: 10; }
.menu button, .menu a { display: block; width: 100%; text-align: left; padding: 10px 12px; border: 0; background: none; border-radius: 8px; cursor: pointer; text-decoration: none; color: var(--ink); font-size: 0.95rem; }
.menu button:hover, .menu a:hover { background: var(--bg); }
.menu .danger { color: var(--danger); }
.menu hr { border: 0; border-top: 1px solid var(--line); margin: 4px 0; }
dialog { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); color: var(--ink); padding: 24px; max-width: 400px; width: calc(100% - 32px); }
dialog::backdrop { background: rgba(0,0,0,.35); }