web/src/index.css

:root {
  --bg-secondary: #faf9f5;
  --bg-primary: #f0eee8;
  --bg-tertiary: #e9e6df;
  --bg-hover: var(--bg-tertiary);
  --bg-quinary: #f6f4ee;
  --bg-error-light: rgba(198, 87, 70, 0.1);
  --floating-surface: #fffdf9;
  --floating-border: #d8d3ca;
  --floating-shadow: 0 12px 26px rgba(0, 0, 0, 0.14);

  --text-primary: #2d2a26;
  --text-secondary: #6d6760;
  --text-tertiary: #a29c95;
  --text-quaternary: #c0bab3;

  --border-color: #e3e1db;
  --border-primary: #d5d2cb;
  --border-hover: #cecac4;

  --primary-color: #8b8680;
  --primary-hover: #7f7a74;
  --primary-active: #726d67;
  --primary-contrast: #ffffff;

  --success-color: #10b981;
  --warning-color: #c65746;
  --error-color: #c65746;
  --danger-color: var(--error-color);

  --shadow: 0 1px 2px 0 rgb(0 0 0 / 0.08);
  --shadow-lg: 0 10px 18px -3px rgb(0 0 0 / 0.1);

  color-scheme: light;
  font-family: 'SF Pro Text', 'Segoe UI', sans-serif;
  color: var(--text-primary);
  background: var(--bg-secondary);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

[data-theme='dark'] {
  --bg-secondary: #151412;
  --bg-primary: #1d1b18;
  --bg-tertiary: #262320;
  --bg-hover: #2e2a26;
  --bg-quinary: #191714;
  --bg-error-light: rgba(198, 87, 70, 0.18);
  --floating-surface: #2a2723;
  --floating-border: #4a443d;
  --floating-shadow: 0 14px 30px rgba(0, 0, 0, 0.4);

  --text-primary: #f6f4f1;
  --text-secondary: #c9c3bb;
  --text-tertiary: #9c958d;
  --text-quaternary: #6f6962;

  --border-color: #3a3530;
  --border-primary: #4a453f;
  --border-hover: #5a544d;

  --primary-color: #8b8680;
  --primary-hover: #9a948e;
  --primary-active: #a6a099;
  --primary-contrast: #ffffff;

  --success-color: #10b981;
  --warning-color: #c65746;
  --error-color: #c65746;
  --danger-color: var(--error-color);

  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.3);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3);

  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html,
body,
#root {
  min-height: 100%;
}

html {
  scrollbar-gutter: stable;
}

body {
  margin: 0;
  background: var(--bg-secondary);
  color: var(--text-primary);
  transition: background-color 200ms ease, color 200ms ease;
}

button,
input,
select,
textarea {
  font: inherit;
}

#root {
  width: 100%;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 999px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--border-hover);
}