* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  color-scheme: dark;
  --bg: #14161b;
  --card: #1e2128;
  --text: #e6e8ee;
  --muted: #7d8494;
  --accent: #5b8cff;
  --danger: #e05d5d;
  --border: #2c3039;
}

input, button { color: inherit; font-family: inherit; }
input[type='checkbox'] { accent-color: var(--accent); }

body {
  font-family: 'Segoe UI', 'Malgun Gothic', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.hidden { display: none !important; }

/* 에러 배너 */
.banner {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 10;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  padding: 10px;
  background: var(--danger);
  color: #fff;
}
.banner button {
  border: 1px solid #fff;
  background: transparent;
  color: #fff;
  padding: 4px 12px;
  border-radius: 4px;
  cursor: pointer;
}

/* 로그인 */
#login-screen {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}
.login-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: min(320px, 90vw);
  padding: 32px;
  background: var(--card);
  border-radius: 12px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}
.login-card h1 { text-align: center; font-size: 22px; margin-bottom: 8px; }
.login-card input {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
}
.login-card button {
  padding: 10px;
  border: none;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  cursor: pointer;
}
.login-error { color: var(--danger); font-size: 13px; text-align: center; }

/* 메인 레이아웃: 왼쪽 오늘 / 오른쪽 목표 3칸 — 화면 꽉 채움 */
#app-screen {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  min-height: 100vh;
  padding: 20px;
}
#today-panel { display: flex; flex-direction: column; }
#todo-list { flex: 1; overflow-y: auto; }
#goals-panel { display: flex; flex-direction: column; gap: 16px; }
.goal-box { flex: 1; display: flex; flex-direction: column; }
.goal-box .item-list { flex: 1; overflow-y: auto; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}
#date-label { font-size: 22px; }
.goal-box h3 { font-size: 16px; }
.period-label { color: var(--muted); font-size: 13px; font-weight: normal; margin-left: 4px; }

.nav { display: flex; gap: 4px; }
.nav button {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 6px;
  padding: 4px 10px;
  cursor: pointer;
  font-size: 13px;
}
.nav button:hover { background: var(--bg); }

/* 항목 목록 */
.item-list { list-style: none; }
.item-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 2px;
  border-bottom: 1px solid var(--border);
}
.item-list input[type='checkbox'] { width: 17px; height: 17px; cursor: pointer; flex-shrink: 0; }
.item-list .content { flex: 1; cursor: text; font-size: 15px; word-break: break-all; }
.item-list li.done .content { text-decoration: line-through; color: var(--muted); }
.item-list .edit-input {
  flex: 1;
  font-size: 15px;
  padding: 2px 4px;
  border: 1px solid var(--accent);
  border-radius: 4px;
}
.item-list .delete {
  border: none;
  background: none;
  color: var(--muted);
  font-size: 16px;
  cursor: pointer;
  padding: 0 4px;
}
.item-list .delete:hover { color: var(--danger); }

.add-input {
  width: 100%;
  margin-top: 10px;
  padding: 8px 10px;
  border: 1px dashed var(--border);
  border-radius: 6px;
  font-size: 14px;
  background: transparent;
}
.add-input:focus { outline: none; border-color: var(--accent); border-style: solid; }

#logout-btn {
  position: fixed;
  right: 16px;
  bottom: 16px;
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 6px;
  padding: 6px 14px;
  color: var(--muted);
  cursor: pointer;
}

/* 좁은 화면: 위아래로 쌓기 */
@media (max-width: 800px) {
  #app-screen { grid-template-columns: 1fr; }
}