:root {
  --font-family: "DM Sans", -apple-system, "SF Pro Text", Roboto, "Noto Sans", "Noto Sans Arabic", "Noto Sans JP", "Segoe UI", sans-serif;

  --display-large-size: 48px; --display-large-line: 1.1; --display-large-weight: 700; --display-large-tracking: -1.6px;
  --display-medium-size: 40px; --display-medium-line: 1.1; --display-medium-weight: 700; --display-medium-tracking: -1.2px;
  --display-small-size: 34px; --display-small-line: 1.15; --display-small-weight: 700; --display-small-tracking: -0.9px;
  --headline-large-size: 32px; --headline-large-line: 1.2; --headline-large-weight: 700; --headline-large-tracking: -0.8px;
  --headline-medium-size: 28px; --headline-medium-line: 1.2; --headline-medium-weight: 700; --headline-medium-tracking: -0.6px;
  --headline-small-size: 24px; --headline-small-line: 1.25; --headline-small-weight: 700; --headline-small-tracking: -0.4px;
  --title-large-size: 20px; --title-large-line: 1.4; --title-large-weight: 600; --title-large-tracking: 0.1px;
  --title-medium-size: 16px; --title-medium-line: 1.4; --title-medium-weight: 600; --title-medium-tracking: 0.15px;
  --title-small-size: 14px; --title-small-line: 1.4; --title-small-weight: 600; --title-small-tracking: 0.1px;
  --body-large-size: 16px; --body-large-line: 1.5; --body-large-weight: 400; --body-large-tracking: 0.15px;
  --body-medium-size: 14px; --body-medium-line: 1.5; --body-medium-weight: 400; --body-medium-tracking: 0.25px;
  --body-small-size: 12px; --body-small-line: 1.5; --body-small-weight: 400; --body-small-tracking: 0.4px;
  --label-large-size: 14px; --label-large-line: 1.43; --label-large-weight: 600; --label-large-tracking: 0.1px;
  --label-medium-size: 12px; --label-medium-line: 1.33; --label-medium-weight: 500; --label-medium-tracking: 0.5px;
  --label-small-size: 11px; --label-small-line: 1.45; --label-small-weight: 500; --label-small-tracking: 0.5px;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 24px;
  --space-2xl: 32px;
  --page-padding: 16px;
  --card-padding: 16px;
  --section-gap: 24px;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --border-width: 1px;
  --border-width-selected: 2px;
  --border-width-focus: 1.5px;

  --button-min-height: 52px;
  --button-padding-block: 14px;
  --button-padding-inline: 24px;
  --touch-target: 48px;
  --icon-size: 24px;
  --icon-size-inline: 18px;
  --nav-bar-height: 74px;
  --progress-height: 8px;
  --ring-stroke: 10px;
  --chart-line-width: 2.5px;

  --motion-micro: 160ms;
  --motion-page: 220ms;
  --ease-enter: cubic-bezier(0.215, 0.61, 0.355, 1);
  --ease-exit: cubic-bezier(0.55, 0.055, 0.675, 0.19);
  --press-scale: 0.98;
}

:root,
[data-theme="light"] {
  color-scheme: light;
  --color-seed: #5B4F96;
  --color-primary: #5B4F96;
  --color-on-primary: #FFFFFF;
  --color-primary-container: #E7E2F6;
  --color-on-primary-container: #2A2350;
  --color-secondary: #4F6E4C;
  --color-on-secondary: #FFFFFF;
  --color-secondary-container: #DCE8D8;
  --color-on-secondary-container: #1E2D1C;
  --color-tertiary: #B0453E;
  --color-on-tertiary: #FFFFFF;
  --color-tertiary-container: #FFDAD5;
  --color-on-tertiary-container: #6E241D;
  --color-error: #C03434;
  --color-on-error: #FFFFFF;
  --color-error-container: #FFEAE8;
  --color-on-error-container: #6E1F1F;
  --color-background: #F7F4F2;
  --color-surface: #FFFDFC;
  --color-on-surface: #2D2A26;
  --color-on-surface-variant: #5E5752;
  --color-text-tertiary: #6E6661;
  --color-surface-container-lowest: #FFFFFF;
  --color-surface-container-low: #FBF8F6;
  --color-surface-container: #F4F0EE;
  --color-surface-container-high: #EEE9E6;
  --color-surface-container-highest: #E8E2DF;
  --color-outline: #8C837E;
  --color-outline-variant: #DDD4CF;
  --color-card-edge: #DDD4CF;
  --color-inverse-surface: #2D2A26;
  --color-on-inverse-surface: #F5F0F0;
  --color-inverse-primary: #C6BCF2;
  --color-shadow: #000000;
  --color-scrim: #000000;
  --color-success: #4A7A4C;

  --color-mood-low: #8C83BF;
  --color-mood-mid: #6F64AD;
  --color-mood-high: #5B4F96;
  --color-energy: #4F6E4C;
  --color-metric-sleep: #5B4F96;
  --color-metric-hrv: #4F6E4C;
  --color-metric-resting-hr: #2F6F73;
  --color-metric-steps: #8A5A22;
  --color-metric-workouts: #3F5F8A;
  --color-metric-nutrition: #B0453E;
  --color-chart-grid: #DDD4CF;
  --color-chart-axis: #5E5752;
  --color-pro: #B0453E;
  --color-recording: #B0453E;

  --shadow-card: 0 10px 18px rgba(0, 0, 0, 0.06);
  --card-highlight: linear-gradient(135deg, rgba(255, 255, 255, 0.10) 0%, rgba(255, 255, 255, 0) 70%);
}

[data-theme="dark"] {
  color-scheme: dark;
  --color-seed: #5B4F96;
  --color-primary: #C6BCF2;
  --color-on-primary: #2A2350;
  --color-primary-container: #443B75;
  --color-on-primary-container: #E7E2F6;
  --color-secondary: #9DBF99;
  --color-on-secondary: #1E2D1C;
  --color-secondary-container: #34472F;
  --color-on-secondary-container: #DCE8D8;
  --color-tertiary: #E07A73;
  --color-on-tertiary: #2D2A26;
  --color-tertiary-container: #5E2A25;
  --color-on-tertiary-container: #FFDAD5;
  --color-error: #E27B7B;
  --color-on-error: #2D2A26;
  --color-error-container: #4A1D1B;
  --color-on-error-container: #FFDAD6;
  --color-background: #171517;
  --color-surface: #231F23;
  --color-on-surface: #F5F0F0;
  --color-on-surface-variant: #C9BFBC;
  --color-text-tertiary: #B3A8A5;
  --color-surface-container-lowest: #121012;
  --color-surface-container-low: #1D1A1D;
  --color-surface-container: #231F23;
  --color-surface-container-high: #2B262B;
  --color-surface-container-highest: #332D33;
  --color-outline: #8F8590;
  --color-outline-variant: #48404A;
  --color-card-edge: #48404A;
  --color-inverse-surface: #F5F0F0;
  --color-on-inverse-surface: #2D2A26;
  --color-inverse-primary: #5B4F96;
  --color-shadow: #000000;
  --color-scrim: #000000;
  --color-success: #95BC96;

  --color-mood-low: #7D72B6;
  --color-mood-mid: #A59DCB;
  --color-mood-high: #C6BCF2;
  --color-energy: #9DBF99;
  --color-metric-sleep: #C6BCF2;
  --color-metric-hrv: #9DBF99;
  --color-metric-resting-hr: #8CC7C9;
  --color-metric-steps: #E0B07A;
  --color-metric-workouts: #9DB6DA;
  --color-metric-nutrition: #E07A73;
  --color-chart-grid: #48404A;
  --color-chart-axis: #C9BFBC;
  --color-pro: #E07A73;
  --color-recording: #E07A73;

  --shadow-card: 0 12px 20px rgba(0, 0, 0, 0.28);
  --card-highlight: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0) 70%);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --color-primary: #C6BCF2;
    --color-on-primary: #2A2350;
    --color-primary-container: #443B75;
    --color-on-primary-container: #E7E2F6;
    --color-secondary: #9DBF99;
    --color-on-secondary: #1E2D1C;
    --color-secondary-container: #34472F;
    --color-on-secondary-container: #DCE8D8;
    --color-tertiary: #E07A73;
    --color-on-tertiary: #2D2A26;
    --color-tertiary-container: #5E2A25;
    --color-on-tertiary-container: #FFDAD5;
    --color-error: #E27B7B;
    --color-on-error: #2D2A26;
    --color-error-container: #4A1D1B;
    --color-on-error-container: #FFDAD6;
    --color-background: #171517;
    --color-surface: #231F23;
    --color-on-surface: #F5F0F0;
    --color-on-surface-variant: #C9BFBC;
    --color-text-tertiary: #B3A8A5;
    --color-surface-container-lowest: #121012;
    --color-surface-container-low: #1D1A1D;
    --color-surface-container: #231F23;
    --color-surface-container-high: #2B262B;
    --color-surface-container-highest: #332D33;
    --color-outline: #8F8590;
    --color-outline-variant: #48404A;
    --color-card-edge: #48404A;
    --color-inverse-surface: #F5F0F0;
    --color-on-inverse-surface: #2D2A26;
    --color-inverse-primary: #5B4F96;
    --color-success: #95BC96;
    --color-mood-low: #7D72B6;
    --color-mood-mid: #A59DCB;
    --color-mood-high: #C6BCF2;
    --color-energy: #9DBF99;
    --color-metric-sleep: #C6BCF2;
    --color-metric-hrv: #9DBF99;
    --color-metric-resting-hr: #8CC7C9;
    --color-metric-steps: #E0B07A;
    --color-metric-workouts: #9DB6DA;
    --color-metric-nutrition: #E07A73;
    --color-chart-grid: #48404A;
    --color-chart-axis: #C9BFBC;
    --color-pro: #E07A73;
    --color-recording: #E07A73;
    --shadow-card: 0 12px 20px rgba(0, 0, 0, 0.28);
    --card-highlight: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0) 70%);
  }
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --motion-micro: 0ms;
    --motion-page: 0ms;
    --press-scale: 1;
  }
}