/* ===== THEME 1: CLASSIC NOTEBOOK (Default) ===== */
[data-theme="classic"] {
  --ink: #1a1a2e;
  --pen-blue: #1a237e;
  --pen-black: #1a1a1a;
  --paper: #fdf6e3;
  --paper-bg: #d4c5a9;
  --rule-line: #b8d4e8;
  --margin-line: #e88a8a;
  --accent: #c0392b;
  --accent2: #1a5276;
  --green: #1e8449;
  --header-bg: #1a5276;
  --tab-bg: #1a1a2e;
  --card-bg: white;
  --text-main: #1a237e;
  --text-muted: #888;
  --border-light: #c9b99a;
  --totals-final-bg: #1a1a2e;
  --totals-final-text: white;
  --shadow: rgba(0,0,0,0.15);
  --input-border: #aac8dc;
}

/* ===== THEME 2: DARK DUKAN ===== */
[data-theme="dark"] {
  --ink: #e0d6c2;
  --pen-blue: #f0c040;
  --pen-black: #e0d6c2;
  --paper: #1e1e2e;
  --paper-bg: #12121a;
  --rule-line: rgba(240,192,64,0.12);
  --margin-line: rgba(240,192,64,0.15);
  --accent: #e74c3c;
  --accent2: #f0c040;
  --green: #2ecc71;
  --header-bg: #16213e;
  --tab-bg: #0a0a12;
  --card-bg: #252540;
  --text-main: #f0c040;
  --text-muted: #8888aa;
  --border-light: #3a3a55;
  --totals-final-bg: #f0c040;
  --totals-final-text: #1e1e2e;
  --shadow: rgba(0,0,0,0.4);
  --input-border: rgba(240,192,64,0.25);
}

/* ===== THEME 3: CLEAN WHITE ===== */
[data-theme="white"] {
  --ink: #222;
  --pen-blue: #333;
  --pen-black: #111;
  --paper: #ffffff;
  --paper-bg: #f0f2f5;
  --rule-line: #e8e8e8;
  --margin-line: transparent;
  --accent: #e53935;
  --accent2: #1565c0;
  --green: #2e7d32;
  --header-bg: #1565c0;
  --tab-bg: #222;
  --card-bg: #fff;
  --text-main: #333;
  --text-muted: #999;
  --border-light: #ddd;
  --totals-final-bg: #1565c0;
  --totals-final-text: white;
  --shadow: rgba(0,0,0,0.08);
  --input-border: #ccc;
}