:root {
  --bg: #f6f7fb;
  --card: #ffffff;
  --ink: #1a1d24;
  --ink-soft: #5b6270;
  --ink-soft2: #8a92a0;
  --line: #e6e8ef;
  --primary: #2d5bff;
  --primary-soft: #e8eeff;
  --warn: #ff7849;
  --warn-soft: #ffeee5;
  --ok: #2ecc71;
  --ok-soft: #e3f8ec;
  --shadow: 0 6px 20px rgba(20, 30, 60, 0.06);
  --shadow-lg: 0 12px 32px rgba(20, 30, 60, 0.10);
  --radius: 14px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text",
               "Apple SD Gothic Neo", "Pretendard", sans-serif;
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

button { font-family: inherit; }
input { font-family: inherit; }

.app {
  max-width: 980px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

/* ---------- 상단바 ---------- */
.topbar {
  display: flex; align-items: center; gap: 14px;
  margin-bottom: 22px;
}
.logo {
  width: 48px; height: 48px;
  background: var(--primary-soft); color: var(--primary);
  border-radius: 12px;
  display: grid; place-items: center;
  font-weight: 700; font-size: 14px;
}
.brand h1 { margin: 0; font-size: 22px; letter-spacing: -0.01em; }
.subtitle { margin: 2px 0 0; color: var(--ink-soft); font-size: 13px; }

/* ---------- 컨트롤 카드 (컨디션 + 탭) ---------- */
.controls {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 20px;
  margin-bottom: 18px;
}
.cond-row {
  display: flex; align-items: center; gap: 16px;
  flex-wrap: wrap;
}
.cond-row label { font-size: 14px; color: var(--ink-soft); min-width: 120px; }
.cond-row .cond-val {
  font-size: 24px; font-weight: 700; color: var(--primary);
  min-width: 32px; text-align: right;
}
#cond-slider {
  flex: 1; min-width: 200px;
  -webkit-appearance: none; appearance: none;
  height: 6px; background: var(--line);
  border-radius: 3px; outline: none;
}
#cond-slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 22px; height: 22px;
  background: var(--primary);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(45, 91, 255, 0.35);
}
#cond-slider::-moz-range-thumb {
  width: 22px; height: 22px;
  background: var(--primary); border: none;
  border-radius: 50%; cursor: pointer;
}
.cond-summary {
  font-size: 13px; color: var(--ink-soft);
  margin-top: 8px;
}

.tabs {
  display: inline-flex; gap: 4px;
  background: var(--bg); padding: 4px;
  border-radius: 10px;
  margin-top: 14px;
}
.tab {
  border: none; background: transparent;
  padding: 8px 16px; border-radius: 8px;
  cursor: pointer; font-size: 14px;
  color: var(--ink-soft); font-weight: 500;
  transition: all 0.15s;
}
.tab:hover { color: var(--ink); }
.tab.active {
  background: var(--card); color: var(--primary);
  box-shadow: 0 2px 6px rgba(20, 30, 60, 0.06);
}

#sample-note {
  font-size: 13px; color: var(--ink-soft);
  margin-top: 12px;
  padding: 10px 12px;
  background: var(--primary-soft);
  border-radius: 8px;
}

/* ---------- 결과 그리드 ---------- */
#results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
  margin-bottom: 22px;
}
.lift-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
  display: flex; flex-direction: column;
}
.lift-head {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 12px;
}
.lift-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--primary-soft); color: var(--primary);
  display: grid; place-items: center;
  font-size: 11px; font-weight: 700;
  letter-spacing: -0.02em;
}
.lift-title h3 { margin: 0; font-size: 16px; letter-spacing: -0.01em; }
.lift-sub { font-size: 12px; color: var(--ink-soft2); }

.lift-empty {
  padding: 18px 0; text-align: center;
  color: var(--ink-soft); font-size: 14px;
}

.one-rm {
  display: flex; align-items: baseline; gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 2px;
}
.one-rm-num {
  font-size: 30px; font-weight: 700; letter-spacing: -0.02em;
  color: var(--ink);
}
.one-rm-unit { font-size: 14px; color: var(--ink-soft); margin-right: 6px; }
.one-rm-src {
  font-size: 12px; color: var(--ink-soft2);
  margin-bottom: 14px;
}

.badge {
  font-size: 11px; padding: 2px 8px;
  border-radius: 999px; font-weight: 600;
  margin-left: auto;
}
.badge-high   { background: var(--ok-soft);     color: #1f7a48; }
.badge-medium { background: var(--primary-soft); color: var(--primary); }
.badge-low    { background: #fff1ec;           color: #c44c1f; }

.rx-row {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.rx-block {
  border-radius: 10px;
  padding: 12px 12px 10px;
  border: 1px solid var(--line);
  position: relative;
}
.rx-safe { background: var(--ok-soft); border-color: rgba(46, 204, 113, 0.2); }
.rx-chal { background: var(--warn-soft); border-color: rgba(255, 120, 73, 0.2); }
.rx-label {
  font-size: 11px; font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
  text-transform: uppercase;
}
.rx-safe .rx-label { color: #1f7a48; }
.rx-chal .rx-label { color: #c44c1f; }
.rx-weight {
  font-size: 22px; font-weight: 700; line-height: 1.1;
}
.rx-safe .rx-weight { color: #1f7a48; }
.rx-chal .rx-weight { color: #c44c1f; }
.rx-unit { font-size: 12px; font-weight: 600; opacity: 0.7; }
.rx-reps {
  font-size: 14px; color: var(--ink); margin-top: 2px;
  font-weight: 500;
}
.rx-meta {
  font-size: 11px; color: var(--ink-soft);
  margin-top: 6px;
}

.notes {
  list-style: none; padding: 0;
  margin: 12px 0 0;
  font-size: 12px; color: var(--ink-soft);
}
.notes li {
  padding: 4px 0 4px 12px;
  position: relative;
}
.notes li::before {
  content: "·"; position: absolute; left: 2px; color: var(--ink-soft2);
}

/* ---------- 에디터 ---------- */
.editor-wrap {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 20px;
  margin-bottom: 22px;
}
.editor-head {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 12px;
  flex-wrap: wrap; gap: 8px;
}
.editor-head h2 { margin: 0; font-size: 16px; }
.editor-actions { display: flex; gap: 8px; }
.btn {
  border: 1px solid var(--line); background: var(--card);
  padding: 7px 12px; border-radius: 8px;
  font-size: 13px; color: var(--ink-soft);
  cursor: pointer;
}
.btn:hover { color: var(--ink); border-color: var(--ink-soft2); }
.btn-primary {
  background: var(--primary); color: white; border-color: var(--primary);
}
.btn-primary:hover { background: #2148d6; border-color: #2148d6; color: white; }
.btn-danger { color: var(--warn); }

#editor {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
}
.edit-lift {
  background: var(--bg);
  border-radius: 10px;
  padding: 12px;
}
.edit-lift h4 {
  margin: 0 0 10px; font-size: 14px; letter-spacing: -0.01em;
}
.edit-session {
  background: var(--card);
  border-radius: 8px;
  padding: 10px;
  margin-bottom: 8px;
  border: 1px solid var(--line);
}
.edit-session-head {
  display: flex; justify-content: space-between; align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.edit-session-head label {
  font-size: 12px; color: var(--ink-soft);
  display: flex; align-items: center; gap: 6px;
  flex: 1;
}
.edit-session-head input[type="date"] {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 4px 6px;
  font-size: 12px;
  flex: 1;
  min-width: 0;
}
.edit-sets { display: flex; flex-direction: column; gap: 6px; }
.edit-set-row {
  display: flex; align-items: center; gap: 6px;
}
.edit-set-row input[type="number"] {
  flex: 1; min-width: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 6px 8px;
  font-size: 13px;
}
.edit-set-row input:focus {
  outline: none;
  border-color: var(--primary);
}
.edit-set-row .x { color: var(--ink-soft2); font-size: 12px; }
.btn-mini {
  border: 1px solid var(--line); background: var(--card);
  padding: 4px 8px; border-radius: 6px;
  font-size: 12px; color: var(--ink-soft);
  cursor: pointer;
}
.btn-mini:hover { color: var(--ink); }
.btn-del { color: var(--warn); }

/* ---------- 푸터 ---------- */
.explain {
  background: var(--card);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow);
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.65;
  margin-bottom: 14px;
}
.explain b { color: var(--ink); }

.disclaimer {
  text-align: center; font-size: 12px;
  color: var(--ink-soft2);
  padding: 16px 8px 0;
}

/* ---------- 반응형 ---------- */
@media (max-width: 560px) {
  .app { padding: 16px 14px 40px; }
  .brand h1 { font-size: 18px; }
  .one-rm-num { font-size: 26px; }
  .rx-row { grid-template-columns: 1fr; }
  .cond-row label { min-width: 0; }
}