:root {
  --bg: #F4F7F6;
  --surface: #FFFFFF;
  --ink: #1B2A2E;
  --ink-muted: #5B6E70;
  --line: #C9D6D3;
  --hand-fill: #EEF1F0;
  --hand-fill-thumb: #E4E9E8;
  --accent-safe: #2F7A5C;
  --accent-safe-soft: #E4F1EA;
  --dot-empty: #E7ECEB;
  --dot-empty-line: #C3CDCB;
  --danger: #B3402E;
  --r1: #C23B22; --r2: #CB4E31; --r3: #D46443; --r4: #DC7B57;
  --r5: #E4936F; --r6: #EBAC8C; --r7: #F1C6AB; --r8: #F6DFCB;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
}

.page-shell {
  max-width: 420px;
  margin: 0 auto;
  padding: 48px 20px;
}

.app-shell {
  max-width: 780px;
  margin: 0 auto;
  padding: 20px 14px 40px;
}

.card {
  background: var(--surface);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 1px 3px rgba(20,30,30,0.06), 0 1px 2px rgba(20,30,30,0.04);
}

.card h1 {
  font-size: 20px;
  margin: 0 0 6px;
}
.card .subtitle {
  font-size: 13.5px;
  color: var(--ink-muted);
  margin: 0 0 20px;
}

.field { margin-bottom: 14px; }
.field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--ink-muted);
}
.field input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 14px;
  background: var(--bg);
  color: var(--ink);
}
.field input:focus {
  outline: 2px solid var(--accent-safe);
  outline-offset: 1px;
}

.btn-primary {
  width: 100%;
  padding: 11px;
  border: none;
  border-radius: 10px;
  background: var(--accent-safe);
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  margin-top: 6px;
}
.btn-primary:hover { opacity: 0.92; }
.btn-primary:disabled { opacity: 0.6; cursor: default; }

.form-error {
  background: #FBEAE6;
  border: 1px solid #EFC3B8;
  color: var(--danger);
  font-size: 13px;
  padding: 9px 12px;
  border-radius: 10px;
  margin-bottom: 14px;
  display: none;
}

.form-footer {
  text-align: center;
  font-size: 13.5px;
  color: var(--ink-muted);
  margin-top: 16px;
}
.form-footer a { color: var(--accent-safe); font-weight: 600; text-decoration: none; }

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.app-header h1 { font-size: 18px; margin: 0; }
.app-header .user-info { font-size: 13px; color: var(--ink-muted); display: flex; align-items: center; gap: 10px; }
.app-header button {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink-muted);
  border-radius: 10px;
  padding: 6px 12px;
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
}
.app-header button:hover { background: var(--bg); }