:root {
  --bg: #0f1117;
  --bg2: #181c27;
  --bg3: #1e2334;
  --accent: #4f8ef7;
  --accent2: #7c5cbf;
  --green: #34d399;
  --red: #f87171;
  --amber: #fbbf24;
  --text: #e8eaf0;
  --muted: #8892a4;
  --border: #2a3045;
  --card: #1a1f2e;
}

:root[data-theme="light"] {
  --bg: #f3f5fa;
  --bg2: #ffffff;
  --bg3: #e8ecf4;
  --accent: #2f6fe0;
  --accent2: #7c5cbf;
  --green: #0f9d6b;
  --red: #dc2626;
  --amber: #b45309;
  --text: #1a2230;
  --muted: #5a6472;
  --border: #d5dbe6;
  --card: #ffffff;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
  min-height: 100vh;
}

button { font-family: inherit; cursor: pointer; border: none; border-radius: 10px; }
input, select { font-family: inherit; }

#app {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 16px 80px;
}

/* ── Header ──────────────────────────────────────────── */

header.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}
.app-title { font-size: 1.4rem; font-weight: 800; }
.app-title span { color: var(--accent); }
.app-title .tagline { color: var(--accent); font-weight: 600; font-size: 0.8rem; font-style: italic; margin-left: 6px; white-space: nowrap; }
.header-actions { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

/* ── Login / level pick wrap ─────────────────────────── */

.login-wrap {
  min-height: 80vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  text-align: center;
}
.login-title { font-size: 2rem; font-weight: 800; }
.login-title span { color: var(--accent); }

.login-form {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 280px;
}
.login-form input {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  color: var(--text);
  font-size: 1rem;
}

.level-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  max-width: 420px;
}
.level-btn {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px 0;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text);
  transition: transform .15s, border-color .15s;
}
.level-btn:hover { transform: translateY(-3px); border-color: var(--accent); }
.level-btn.current { border-color: var(--green); color: var(--green); }

/* ── Buttons ─────────────────────────────────────────── */

.btn {
  background: var(--accent);
  color: white;
  padding: 12px 20px;
  font-weight: 600;
  font-size: 0.95rem;
}
.btn:hover { filter: brightness(1.1); }
.btn.secondary { background: var(--bg3); color: var(--text); }
.btn.green { background: var(--green); color: #06231a; }
.btn.red { background: var(--red); color: #2a0a0a; }
.btn.small { padding: 8px 14px; font-size: 0.85rem; }
.btn:disabled { opacity: 0.5; cursor: default; }

.link-btn {
  background: none;
  color: var(--muted);
  text-decoration: underline;
  font-size: 0.85rem;
  padding: 4px;
}

.error-msg { color: var(--red); font-size: 0.9rem; }

.login-form h3 { font-size: 1.1rem; }
.login-form p { line-height: 1.45; }
.login-form .link-btn { text-align: center; }

.sync-note {
  color: var(--muted);
  font-size: 0.82rem;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  margin: -8px 0 18px;
}
.sync-note .link-btn { font-size: 0.82rem; }

/* ── Cards ───────────────────────────────────────────── */

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  margin-bottom: 20px;
}
.card h2 { font-size: 1.1rem; margin-bottom: 14px; }

.level-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.level-amount { font-size: 2.2rem; font-weight: 800; color: var(--accent); }
.level-label { color: var(--muted); font-size: 0.85rem; }

.progress-wrap { flex: 1; min-width: 200px; }
.progress-bar-bg {
  background: var(--bg3);
  border-radius: 999px;
  height: 12px;
  overflow: hidden;
  margin: 8px 0;
}
.progress-bar-fill {
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  height: 100%;
  border-radius: 999px;
  transition: width .3s;
}
.progress-bar-fill.done { background: linear-gradient(90deg, var(--green), #10b981); }

.streak-badge {
  display: inline-block;
  margin-top: 8px;
  background: rgba(251,191,36,0.15);
  color: var(--amber);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 5px 12px;
  border-radius: 999px;
}

/* ── Exercise rows ───────────────────────────────────── */

.exercise-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  margin-bottom: 8px;
}
.exercise-row.done { border-color: var(--green); }
.exercise-info { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; min-width: 0; }
.exercise-name { font-weight: 600; }
.exercise-target { color: var(--amber); font-size: 0.85rem; white-space: nowrap; }
.exercise-actions { display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; margin-left: auto; }

.status-badge {
  font-size: 0.78rem;
  padding: 5px 10px;
  border-radius: 999px;
  font-weight: 600;
  white-space: nowrap;
}
.status-badge.approved { background: rgba(52,211,153,0.15); color: var(--green); }

.lock-badge {
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: 999px;
  background: rgba(124,92,191,0.18);
  color: var(--accent2);
  font-weight: 600;
  white-space: nowrap;
}
.exercise-row.locked { border-style: dashed; }
.exercise-admin-block.locked { border-style: dashed; }

.admin-user-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.admin-user-row:last-child { border-bottom: none; }
.admin-user-controls { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-left: auto; }
.admin-user-controls select {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 8px;
  color: var(--text);
  font-size: 0.82rem;
  max-width: 150px;
}

.empty-state { color: var(--muted); font-size: 0.9rem; padding: 12px 0; }

/* ── History ─────────────────────────────────────────── */

.history-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
  gap: 10px;
}
.history-row:last-child { border-bottom: none; }
.history-date { color: var(--muted); min-width: 90px; }

/* ── Tabs ────────────────────────────────────────────── */

.tabs { display: flex; gap: 6px; margin-bottom: 20px; flex-wrap: wrap; }
.tab-btn {
  background: var(--bg2);
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 10px 16px;
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: 10px;
}
.tab-btn.active { background: var(--accent); color: white; border-color: var(--accent); }
.tabs.plan-tabs { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 6px; }
.tabs.plan-tabs .tab-btn { flex: 0 0 auto; }

/* ── Forms ───────────────────────────────────────────── */

.form-row { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
.form-row input, .form-row select {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 9px 12px;
  color: var(--text);
  font-size: 0.9rem;
  flex: 1;
  min-width: 100px;
}

.icon-field { max-width: 80px; }

@media (max-width: 480px) {
  .form-row {
    flex-direction: column;
    align-items: stretch;
  }
  .form-row input,
  .form-row select,
  .form-row button,
  .form-row span[data-role="unit-label"] {
    width: 100%;
    min-width: 0;
  }
  .form-row .icon-field {
    max-width: none;
  }
  .form-row span[data-role="unit-label"] {
    text-align: right;
  }
}

.exercise-admin-block {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
  margin-bottom: 14px;
  background: var(--bg2);
}
.exercise-admin-row {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.exercise-admin-row:last-child { border-bottom: none; }

.group-heading {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-weight: 700;
  margin-bottom: 10px;
}

.icon-btn { background: none; color: var(--muted); padding: 4px 8px; font-size: 1rem; }
.icon-btn:hover { color: var(--text); }

.level-targets-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}
.level-target-input {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 12px;
}
.level-target-input label { flex: 1; font-size: 0.9rem; }
.level-target-input input {
  width: 80px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 8px;
  color: var(--text);
}

/* ── Modal ───────────────────────────────────────────── */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 16px;
}
.modal {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  width: 100%;
  max-width: 420px;
  max-height: 85vh;
  overflow-y: auto;
}
.modal h3 { margin-bottom: 14px; }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 14px; }

.help-step {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  opacity: 0;
  transform: translateY(14px);
  animation: help-step-in 0.5s ease forwards;
}
.help-step:last-of-type { border-bottom: none; }

.help-step-icon {
  font-size: 1.6rem;
  line-height: 1;
  animation: help-icon-pop 0.6s ease forwards;
  animation-delay: inherit;
  flex-shrink: 0;
}

.help-step-title { font-weight: 700; margin-bottom: 2px; }
.help-step-text { color: var(--muted); font-size: 0.88rem; line-height: 1.45; }

@keyframes help-step-in {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes help-icon-pop {
  0% { transform: scale(0.3); }
  60% { transform: scale(1.25); }
  100% { transform: scale(1); }
}

/* ── Toast ───────────────────────────────────────────── */

.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--card);
  border: 1px solid var(--border);
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 0.9rem;
  z-index: 300;
}
.toast.err { border-color: var(--red); color: var(--red); }
.toast.ok { border-color: var(--green); color: var(--green); }