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

    :root {
      --bg:      #0d1117;
      --surface: #161b22;
      --card:    #1c2128;
      --border:  #30363d;
      --accent:  #f7df1e;
      --green:   #3fb950;
      --red:     #f85149;
      --text:    #e6edf3;
      --muted:   #8b949e;
      --radius:  12px;
    }

    body {
      font-family: 'Outfit', sans-serif;
      background: var(--bg);
      color: var(--text);
      min-height: 100vh;
      padding: 48px 24px 80px;
    }

    .wrapper { max-width: 860px; margin: 0 auto; }

    /* ── HEADER ── */
    .header { margin-bottom: 32px; }
    .header .tag {
      font-family: 'Space Mono', monospace;
      font-size: 0.65rem;
      color: var(--accent);
      letter-spacing: 0.2em;
      text-transform: uppercase;
      display: block;
      margin-bottom: 8px;
    }
    .header h1 { font-size: clamp(1.6rem, 4vw, 2rem); font-weight: 700; }

    /* ── INPUT AREA ── */
    .input-card {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 22px;
      margin-bottom: 24px;
    }

    .input-row {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
    }

    input[type="text"] {
      flex: 1;
      min-width: 160px;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 8px;
      color: var(--text);
      font-family: 'Outfit', sans-serif;
      font-size: 0.88rem;
      padding: 10px 14px;
      outline: none;
      transition: border-color 0.2s, box-shadow 0.2s;
    }

    input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(247,223,30,0.07); }
    input.error { border-color: var(--red) !important; box-shadow: 0 0 0 3px rgba(248,81,73,0.08); }
    input.ok    { border-color: var(--green) !important; }

    .err-row {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
      margin-top: 6px;
    }

    .err-msg {
      flex: 1;
      min-width: 160px;
      font-size: 0.72rem;
      color: var(--red);
      min-height: 14px;
    }

    /* ── BUTTONS ── */
    .btn {
      padding: 10px 20px;
      border-radius: 8px;
      font-family: 'Outfit', sans-serif;
      font-size: 0.85rem;
      font-weight: 600;
      cursor: pointer;
      border: none;
      transition: all 0.2s;
      white-space: nowrap;
    }
    .btn-yellow { background: var(--accent); color: #111; }
    .btn-yellow:hover { filter: brightness(1.1); transform: translateY(-1px); }
    .btn-ghost {
      background: transparent;
      color: var(--muted);
      border: 1px solid var(--border);
    }
    .btn-ghost:hover { color: var(--text); border-color: var(--muted); }

    /* ── STATS BAR ── */
    .stats-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 16px;
      flex-wrap: wrap;
      gap: 8px;
    }

    .stats-bar .tag {
      font-family: 'Space Mono', monospace;
      font-size: 0.65rem;
      color: var(--muted);
      letter-spacing: 0.15em;
      text-transform: uppercase;
    }

    .count-pill {
      font-family: 'Space Mono', monospace;
      font-size: 0.68rem;
      padding: 4px 12px;
      border-radius: 20px;
      border: 1px solid var(--border);
      color: var(--muted);
      transition: all 0.2s;
    }
    .count-pill.has-cards { border-color: var(--green); color: var(--green); background: rgba(63,185,80,0.07); }

    /* ── CARDS GRID ── */
    #cards {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
      gap: 16px;
    }

    /* ── CARD ── */
    .card {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 20px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      position: relative;
      overflow: hidden;
      animation: slideIn 0.25s ease both;
      transition: border-color 0.2s, transform 0.2s;
    }

    .card:hover { border-color: rgba(247,223,30,0.25); transform: translateY(-2px); }

    /* top accent line */
    .card::before {
      content: '';
      position: absolute;
      top: 0; left: 20px; right: 20px;
      height: 2px;
      background: linear-gradient(90deg, transparent, var(--accent), transparent);
      border-radius: 2px;
    }

    @keyframes slideIn {
      from { opacity: 0; transform: translateY(-10px); }
      to   { opacity: 1; transform: translateY(0); }
    }

    .card-num {
      font-family: 'Space Mono', monospace;
      font-size: 0.6rem;
      color: var(--accent);
      letter-spacing: 0.1em;
    }

    .card h3 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text);
    }

    .card p {
      font-size: 0.85rem;
      color: var(--muted);
      line-height: 1.6;
      flex: 1;
    }

    .card-footer {
      display: flex;
      justify-content: flex-end;
      padding-top: 8px;
      border-top: 1px solid var(--border);
    }

    .delete-btn {
      padding: 5px 12px;
      border-radius: 6px;
      font-size: 0.75rem;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid rgba(248,81,73,0.3);
      background: transparent;
      color: var(--red);
      font-family: 'Outfit', sans-serif;
      transition: all 0.2s;
    }
    .delete-btn:hover { background: rgba(248,81,73,0.1); }

    /* ── EMPTY STATE ── */
    .empty {
      grid-column: 1 / -1;
      text-align: center;
      padding: 48px 0;
      color: var(--muted);
      font-size: 0.85rem;
      display: none;
    }
    .empty.show { display: block; }
    .empty-icon { font-size: 2rem; display: block; margin-bottom: 8px; }

    /* ── TOAST ── */
    .toast {
      position: fixed;
      bottom: 28px; left: 50%;
      transform: translateX(-50%) translateY(20px);
      background: var(--green);
      color: #111;
      font-family: 'Space Mono', monospace;
      font-size: 0.72rem;
      font-weight: 700;
      padding: 9px 20px;
      border-radius: 20px;
      opacity: 0;
      transition: all 0.3s;
      pointer-events: none;
      z-index: 999;
    }
    .toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }