:root {
    --bg: #f7f3ec;
    --bg-card: #fdfbf6;
    --ink: #2a2520;
    --ink-soft: #6b6359;
    --ink-faint: #a8a094;
    --line: #e6dfd2;
    --line-strong: #d4c9b3;
    --edit-mark: #a3906b;
    --accent: #3d5a40;
    --accent-soft: #e8ede4;

    --s0: #b8c4ad;
    --s1: #97b87a;
    --s2: #c4c478;
    --s3: #e0b465;
    --s4: #d48a5a;
    --s5: #b8624a;
  }

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

  body {
    font-family: 'Manrope', -apple-system, sans-serif;
    background: var(--bg);
    color: var(--ink);
    line-height: 1.5;
    min-height: 100vh;
    padding: 3rem 1.5rem 4rem;
    background-image:
      radial-gradient(ellipse 80% 50% at 50% -10%, rgba(151, 184, 122, 0.08), transparent),
      radial-gradient(ellipse 60% 40% at 100% 100%, rgba(184, 98, 74, 0.05), transparent);
  }

  main {
    max-width: 640px;
    margin: 0 auto;
  }

  header {
    margin-bottom: 3rem;
    text-align: left;
  }

  h1 {
    font-family: 'Playfair Display', serif;
    font-weight: 400;
    font-size: clamp(2.6rem, 6vw, 3.6rem);
    letter-spacing: -0.015em;
    line-height: 1;
    color: var(--ink);
  }

  .date {
    margin-top: 0.6rem;
    font-size: 0.875rem;
    color: var(--ink-soft);
    letter-spacing: 0.02em;
  }

  .date span {
    color: var(--ink);
    font-weight: 500;
  }

  .card {
    background: var(--bg-card);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 1.75rem;
    margin-bottom: 1.5rem;
  }

  .metric {
    margin-bottom: 1.75rem;
  }

  .metric:last-of-type {
    margin-bottom: 0;
  }

  .metric-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 0.6rem;
  }

  .metric-label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.005em;
  }

  .metric-hint {
    font-size: 0.75rem;
    color: var(--ink-faint);
  }

  .scale {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 0.4rem;
  }

  .scale button {
    font-family: inherit;
    border: 1px solid var(--line-strong);
    background: transparent;
    color: var(--ink-soft);
    padding: 0.7rem 0;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.15s ease;
    position: relative;
  }

  .scale button:hover {
    background: rgba(0,0,0,0.03);
    color: var(--ink);
  }

  .scale button[data-val="0"].active { background: var(--s0); border-color: var(--s0); color: #fff; }
  .scale button[data-val="1"].active { background: var(--s1); border-color: var(--s1); color: #fff; }
  .scale button[data-val="2"].active { background: var(--s2); border-color: var(--s2); color: #fff; }
  .scale button[data-val="3"].active { background: var(--s3); border-color: var(--s3); color: #fff; }
  .scale button[data-val="4"].active { background: var(--s4); border-color: var(--s4); color: #fff; }
  .scale button[data-val="5"].active { background: var(--s5); border-color: var(--s5); color: #fff; }

  .scale-legend {
    display: flex;
    justify-content: space-between;
    margin-top: 0.4rem;
    font-size: 0.7rem;
    color: var(--ink-faint);
    letter-spacing: 0.02em;
  }

  .notes-section {
    margin-top: 0.5rem;
  }

  .notes-section label {
    display: block;
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.6rem;
  }

  textarea {
    width: 100%;
    min-height: 80px;
    padding: 0.75rem;
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--ink);
    background: var(--bg);
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    resize: vertical;
    line-height: 1.5;
  }

  textarea:focus {
    outline: none;
    border-color: var(--accent);
  }

  .save-button {
    width: 100%;
    margin-top: 1.5rem;
    padding: 0.95rem;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    color: #fdfbf6;
    background: var(--ink);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    letter-spacing: 0.01em;
    transition: opacity 0.15s ease;
  }

  .save-button:hover { opacity: 0.85; }
  .save-button:disabled { opacity: 0.4; cursor: not-allowed; }

  .cancel-edit-button {
    width: 100%;
    margin-top: 0.6rem;
    padding: 0.7rem;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--ink-soft);
    background: none;
    border: 1px solid var(--line-strong);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.15s ease;
  }
  .cancel-edit-button:hover { color: var(--ink); border-color: var(--ink-soft); }
  .cancel-edit-button[hidden] { display: none; }

  .toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--ink);
    color: var(--bg-card);
    padding: 0.75rem 1.25rem;
    border-radius: 8px;
    font-size: 0.875rem;
    opacity: 0;
    pointer-events: none;
    transition: all 0.25s ease;
    z-index: 100;
  }

  .toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }

  h2 {
    font-family: 'Playfair Display', serif;
    font-weight: 400;
    font-size: 1.5rem;
    margin: 3rem 0 1rem;
    letter-spacing: -0.015em;
    font-variation-settings: "opsz" 100;
  }

  .history-empty {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--ink-faint);
    font-size: 0.9rem;
    font-style: italic;
  }

  .entry {
    background: var(--bg-card);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 1.1rem 1.25rem;
    margin-bottom: 0.6rem;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
  }

  .entry-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .entry-date {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--ink);
  }

  .entry-date .weekday {
    color: var(--ink-soft);
    font-weight: 400;
    margin-right: 0.4rem;
  }

  .entry-actions {
    display: flex;
    align-items: center;
    gap: 0.25rem;
  }

  .entry-edit,
  .entry-delete {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--ink-faint);
    cursor: pointer;
    padding: 0.4rem;
    border-radius: 6px;
    transition: all 0.15s;
    font-family: inherit;
  }

  .entry-edit svg,
  .entry-delete svg { display: block; }

  .entry-edit:hover {
    color: var(--ink);
    background: rgba(0, 0, 0, 0.05);
  }

  .entry-delete:hover {
    color: var(--s5);
    background: rgba(184, 98, 74, 0.08);
  }

  .entry--editing {
    border-left: 3px solid var(--edit-mark);
    border-right: 3px solid var(--edit-mark);
    padding-left: calc(1.25rem - 2px);
    padding-right: calc(1.25rem - 2px);
  }

  .entry-metrics {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0.4rem;
  }

  .entry-metric {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.3rem;
    min-width: 0;
  }

  .entry-metric-label {
    font-size: 0.65rem;
    color: var(--ink-faint);
    letter-spacing: 0.02em;
    text-transform: uppercase;
    line-height: 1.2;
    overflow-wrap: break-word;
    hyphens: auto;
  }

  .entry-metric-value {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-top: auto;
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 6px;
    color: #fff;
    font-size: 0.85rem;
    font-weight: 600;
  }

  .v0 { background: var(--s0); }
  .v1 { background: var(--s1); }
  .v2 { background: var(--s2); }
  .v3 { background: var(--s3); }
  .v4 { background: var(--s4); }
  .v5 { background: var(--s5); }

  .entry-notes {
    font-size: 0.85rem;
    color: var(--ink-soft);
    padding-top: 0.5rem;
    border-top: 1px dashed var(--line);
    line-height: 1.55;
    white-space: pre-wrap;
  }

  .today-marker,
  .editing-marker {
    font-size: 0.7rem;
    background: var(--accent-soft);
    color: var(--accent);
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    font-weight: 600;
    letter-spacing: 0.03em;
    white-space: nowrap;
  }

  footer {
    margin-top: 3rem;
    text-align: center;
    font-size: 0.75rem;
    color: var(--ink-faint);
    line-height: 1.6;
  }

  footer button {
    background: none;
    border: none;
    color: var(--ink-faint);
    cursor: pointer;
    text-decoration: underline;
    font-family: inherit;
    font-size: inherit;
  }

  footer button:hover { color: var(--s5); }

  .chart-section {
    background: var(--bg-card);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 1.75rem;
    margin-top: 3rem;
    margin-bottom: 1.5rem;
  }

  .chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
  }

  .chart-header h2 {
    margin: 0;
  }

  .chart-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0;
    background: none;
    border: none;
    cursor: pointer;
    color: inherit;
    font: inherit;
  }

  .chart-toggle-icon {
    color: var(--ink-soft);
    transition: transform 0.2s ease;
  }

  .chart-section.collapsed .chart-toggle-icon {
    transform: rotate(-90deg);
  }

  .chart-section.collapsed .chart-actions,
  .chart-section.collapsed .chart-container {
    display: none;
  }

  .chart-section.collapsed {
    margin-bottom: 1.5rem;
  }

  .chart-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }

  .chart-range-select {
    font-family: inherit;
    font-size: 0.8rem;
    color: var(--ink-soft);
    background: var(--bg);
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    padding: 0.4rem 0.75rem;
    cursor: pointer;
  }

  .chart-range-select:focus {
    outline: none;
    border-color: var(--accent);
  }

  .chart-pdf-button {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-family: inherit;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--ink-soft);
    background: var(--bg);
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    padding: 0.4rem 0.75rem;
    cursor: pointer;
    letter-spacing: 0.01em;
  }

  .chart-pdf-button svg { color: var(--accent); }

  .chart-pdf-button:hover {
    border-color: var(--accent);
    color: var(--ink);
  }

  .chart-pdf-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
  }

  .chart-container {
    position: relative;
    width: 100%;
    height: 300px;
  }

  /* --- Konto & Sync --- */
  .account-bar {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
    width: fit-content;
    margin-left: auto;
    margin-bottom: 1.5rem;
    padding: 0.35rem 0.6rem;
    background: var(--bg-card);
    border: 1px solid var(--line);
    border-radius: 8px;
    font-size: 0.7rem;
    color: var(--ink-soft);
  }
  .account-bar[hidden] { display: none; }

  .account-info { display: flex; align-items: center; gap: 0.5rem; }
  .account-email { color: var(--ink); font-weight: 500; }

  .account-signout {
    background: none;
    border: 1px solid var(--line-strong);
    color: var(--ink-soft);
    font-family: inherit;
    font-size: 0.65rem;
    padding: 0.2rem 0.5rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s;
  }
  .account-signout:hover { color: var(--ink); border-color: var(--ink-soft); }

  .sync-status {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    letter-spacing: 0.01em;
  }
  .sync-status::before {
    content: '';
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--ink-faint);
  }
  .sync-synced::before  { background: var(--s1); }
  .sync-syncing::before { background: var(--s3); }
  .sync-offline::before { background: var(--ink-faint); }
  .sync-error::before   { background: var(--s5); }

  .config-banner {
    margin-bottom: 1.5rem;
    padding: 0.75rem 1rem;
    background: #fdf3e7;
    border: 1px solid var(--s3);
    border-radius: 10px;
    font-size: 0.8rem;
    color: #8a6a3a;
    line-height: 1.5;
  }
  .config-banner code {
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 0.78rem;
    background: rgba(0,0,0,0.05);
    padding: 0.05rem 0.3rem;
    border-radius: 4px;
  }

  /* --- Login-Overlay --- */
  .auth-overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    background: rgba(247, 243, 236, 0.92);
    backdrop-filter: blur(4px);
  }
  .auth-overlay[hidden] { display: none; }

  .auth-box {
    background: var(--bg-card);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 2.25rem;
    max-width: 420px;
    width: 100%;
    box-shadow: 0 12px 40px rgba(42, 37, 32, 0.1);
  }
  .auth-box h2 {
    font-family: 'Playfair Display', serif;
    font-weight: 400;
    font-size: 2rem;
    margin: 0 0 0.75rem;
  }
  .auth-lead {
    font-size: 0.9rem;
    color: var(--ink-soft);
    margin-bottom: 1.5rem;
    line-height: 1.55;
  }
  .auth-form { display: flex; flex-direction: column; gap: 0.75rem; }
  .auth-form input {
    width: 100%;
    padding: 0.8rem 0.9rem;
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--ink);
    background: var(--bg);
    border: 1px solid var(--line-strong);
    border-radius: 8px;
  }
  .auth-form input:focus { outline: none; border-color: var(--accent); }
  .auth-form button {
    padding: 0.85rem;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    color: #fdfbf6;
    background: var(--ink);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: opacity 0.15s;
  }
  .auth-form button:hover { opacity: 0.85; }
  .auth-form button:disabled { opacity: 0.5; cursor: not-allowed; }
  .auth-msg { margin-top: 1rem; font-size: 0.85rem; line-height: 1.5; min-height: 1.2em; }
  .auth-msg-ok { color: var(--accent); }
  .auth-msg-error { color: var(--s5); }
  .auth-switch {
    margin-top: 1rem;
    font-size: 0.85rem;
    color: var(--ink-soft);
    text-align: center;
  }
  .auth-toggle-btn {
    background: none;
    border: none;
    padding: 0;
    margin-left: 0.35rem;
    font-family: inherit;
    font-size: inherit;
    font-weight: 600;
    color: var(--accent);
    cursor: pointer;
    text-decoration: underline;
  }
  .auth-toggle-btn:hover { opacity: 0.8; }

  @media (max-width: 480px) {
    body { padding: 2rem 1rem 3rem; }
    h1 { font-size: 2rem; overflow-wrap: break-word; }
    .card { padding: 1.25rem; }
    .entry-metrics { grid-template-columns: repeat(2, 1fr); }
    .chart-section { padding: 1.25rem; }
    .auth-box { padding: 1.75rem; }
  }