/* hiSEO theme tokens — light, dark, and system (prefers-color-scheme) */

:root,
[data-theme="light"] {
  color-scheme: light;

  --paper: #f6f5f1;
  --paper-2: #efeee8;
  --card: #ffffff;
  --ink: #14130f;
  --ink-soft: #14130f;
  --muted: #6b6860;
  --line: #e4e2da;
  --line-2: #d8d6cd;

  --sky: #5b9bf0;
  --sky-deep: #2f80ed;
  --sky-50: #eef4fe;
  --sky-100: #dcebfd;
  --sky-200: #c2dcfb;

  --header-bg: rgba(246, 245, 241, 0.82);
  --shadow-sm: 0 24px 56px -24px rgba(20, 19, 15, 0.22);
  --shadow-md: 0 32px 64px -24px rgba(20, 19, 15, 0.18);
  --shadow-lg: 0 30px 60px -40px rgba(20, 19, 15, 0.3);
  --highlight: rgba(20, 19, 15, 0.055);

  --mark-bg: #14130f;
  --mark-fg: #ffffff;
  --btn-on-ink: #ffffff;

  --w-bg: var(--paper);
  --w-card: var(--card);
  --w-panel: var(--paper-2);
  --w-line: var(--line);
  --w-line2: var(--line-2);
  --w-ink: var(--ink);
  --w-muted: #6b6860;
  --w-green: #1f9d57;
  --w-red: #c43d4a;

  --bubble-user-bg: #14130f;
  --bubble-user-fg: #ffffff;
  --bubble-ai-fg: rgba(20, 19, 15, 0.8);
  --send-bg: #14130f;
  --send-fg: #ffffff;
  --fav-bg: #14130f;
  --fav-fg: #ffffff;

  --transform-bg: #14130f;
  --transform-fg: #ffffff;
  --transform-card-bg: #1d1c17;
  --transform-card-border: #2c2a23;
  --transform-title: #ffffff;

  --diff-del-bg: #fdecee;
  --diff-del-fg: #b4434d;
  --diff-add-bg: #e8f7ee;
  --diff-add-fg: #1f8a4d;

  --conn-icon-bg: #ffffff;
  --overlay: rgba(20, 19, 15, 0.42);
  --toggle-shadow: 0 1px 3px rgba(20, 19, 15, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;

    --paper: #12110e;
    --paper-2: #1a1915;
    --card: #1e1d18;
    --ink: #f3f2ed;
    --ink-soft: #d4d2ca;
    --muted: #9a968c;
    --line: #2e2c26;
    --line-2: #3a3830;

    --sky-50: #152238;
    --sky-100: #1a2d4a;
    --sky-200: #234066;

    --header-bg: rgba(18, 17, 14, 0.82);
    --shadow-sm: 0 24px 56px -24px rgba(0, 0, 0, 0.45);
    --shadow-md: 0 32px 64px -24px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 30px 60px -40px rgba(0, 0, 0, 0.55);
    --highlight: rgba(255, 255, 255, 0.06);

    --mark-bg: #f3f2ed;
    --mark-fg: #14130f;
    --btn-on-ink: #14130f;

    --w-bg: #161512;
    --w-card: #1e1d18;
    --w-panel: #1a1915;
    --w-line: #2e2c26;
    --w-line2: #3a3830;
    --w-ink: #f3f2ed;
    --w-muted: #9a968c;

    --bubble-user-bg: #f3f2ed;
    --bubble-user-fg: #14130f;
    --bubble-ai-fg: rgba(243, 242, 237, 0.82);
    --send-bg: #f3f2ed;
    --send-fg: #14130f;
    --fav-bg: #f3f2ed;
    --fav-fg: #14130f;

    --transform-bg: #1a1915;
    --transform-fg: #f3f2ed;
    --transform-card-bg: #1e1d18;
    --transform-card-border: #2e2c26;
    --transform-title: #f3f2ed;

    --diff-del-bg: #3a2226;
    --diff-del-fg: #f0a8b0;
    --diff-add-bg: #1f3328;
    --diff-add-fg: #8fd4a8;

    --conn-icon-bg: #1e1d18;
    --overlay: rgba(0, 0, 0, 0.55);
    --toggle-shadow: 0 1px 3px rgba(0, 0, 0, 0.35);
  }
}

[data-theme="dark"] {
  color-scheme: dark;

  --paper: #12110e;
  --paper-2: #1a1915;
  --card: #1e1d18;
  --ink: #f3f2ed;
  --ink-soft: #d4d2ca;
  --muted: #9a968c;
  --line: #2e2c26;
  --line-2: #3a3830;

  --sky-50: #152238;
  --sky-100: #1a2d4a;
  --sky-200: #234066;

  --header-bg: rgba(18, 17, 14, 0.82);
  --shadow-sm: 0 24px 56px -24px rgba(0, 0, 0, 0.45);
  --shadow-md: 0 32px 64px -24px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 30px 60px -40px rgba(0, 0, 0, 0.55);
  --highlight: rgba(255, 255, 255, 0.06);

  --mark-bg: #f3f2ed;
  --mark-fg: #14130f;
  --btn-on-ink: #14130f;

  --w-bg: #161512;
  --w-card: #1e1d18;
  --w-panel: #1a1915;
  --w-line: #2e2c26;
  --w-line2: #3a3830;
  --w-ink: #f3f2ed;
  --w-muted: #9a968c;

  --bubble-user-bg: #f3f2ed;
  --bubble-user-fg: #14130f;
  --bubble-ai-fg: rgba(243, 242, 237, 0.82);
  --send-bg: #f3f2ed;
  --send-fg: #14130f;
  --fav-bg: #f3f2ed;
  --fav-fg: #14130f;

  --transform-bg: #1a1915;
  --transform-fg: #f3f2ed;
  --transform-card-bg: #1e1d18;
  --transform-card-border: #2e2c26;
  --transform-title: #f3f2ed;

  --diff-del-bg: #3a2226;
  --diff-del-fg: #f0a8b0;
  --diff-add-bg: #1f3328;
  --diff-add-fg: #8fd4a8;

  --conn-icon-bg: #1e1d18;
  --overlay: rgba(0, 0, 0, 0.55);
  --toggle-shadow: 0 1px 3px rgba(0, 0, 0, 0.35);
}

/* theme switcher */
.theme-switch {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper-2);
}

.theme-switch button {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  padding: 0;
  border: none;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, box-shadow 0.15s;
}

.theme-switch button svg {
  width: 15px;
  height: 15px;
}

.theme-switch button:hover {
  color: var(--ink);
}

.theme-switch button.active {
  background: var(--card);
  color: var(--ink);
  box-shadow: var(--toggle-shadow);
}

.theme-switch button:focus-visible {
  outline: 2px solid var(--sky-deep);
  outline-offset: 2px;
}