/* Tema: claro por padrão; escuro com <html data-theme="dark">; sem atributo segue o sistema. */
:root {
  color-scheme: light;
  --font-display: 'Manrope', ui-sans-serif, system-ui, sans-serif;
  --font-body: 'IBM Plex Sans', ui-sans-serif, system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.375rem;
  --text-5xl: 3rem;
  --leading-tight: 1.15;
  --leading-snug: 1.3;
  --leading-normal: 1.5;
  --leading-relaxed: 1.65;
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --weight-extrabold: 800;
  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.04em;
  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  --duration-instant: 80ms;
  --duration-fast: 140ms;
  --duration-base: 220ms;
  --duration-slow: 360ms;
  --ease-standard: cubic-bezier(0.2, 0, 0, 1);
  --ease-enter: cubic-bezier(0, 0, 0.2, 1);
  --ease-exit: cubic-bezier(0.4, 0, 1, 1);
  --ease-emphasized: cubic-bezier(0.3, 0, 0, 1.15);
  --color-bg: #F5F7F7;
  --color-surface: #FFFFFF;
  --color-surface-2: #ECF1F1;
  --color-border: #DCE3E3;
  --color-border-strong: #7A8B8E;
  --color-text: #0E1A1C;
  --color-text-2: #4A5A5D;
  --color-primary: #0B6B63;
  --color-primary-hover: #08564F;
  --color-on-primary: #FFFFFF;
  --color-accent: #C0661A;
  --color-on-accent: #1A0D02;
  --color-success: #1D7A3E;
  --color-warning: #8A5A00;
  --color-error: #B42318;
  --shadow-sm: 0 1px 2px rgba(14,26,28,0.06);
  --shadow-md: 0 4px 12px rgba(14,26,28,0.08), 0 1px 3px rgba(14,26,28,0.06);
  --shadow-lg: 0 12px 32px rgba(14,26,28,0.12), 0 2px 6px rgba(14,26,28,0.06);
  --shadow-focus: 0 0 0 3px rgba(11,107,99,0.35);
}

[data-theme="dark"] {
  color-scheme: dark;
  --color-bg: #0A1214;
  --color-surface: #111C1F;
  --color-surface-2: #17262A;
  --color-border: #22353A;
  --color-border-strong: #5C7478;
  --color-text: #E6EEEE;
  --color-text-2: #9DB0B2;
  --color-primary: #3CC4B0;
  --color-primary-hover: #5ED3C1;
  --color-on-primary: #04201D;
  --color-accent: #F0A04B;
  --color-on-accent: #1A0D02;
  --color-success: #4CC27A;
  --color-warning: #F2C14E;
  --color-error: #F97066;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.45), 0 1px 3px rgba(0,0,0,0.35);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.55), 0 2px 6px rgba(0,0,0,0.35);
  --shadow-focus: 0 0 0 3px rgba(60,196,176,0.45);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --color-bg: #0A1214;
    --color-surface: #111C1F;
    --color-surface-2: #17262A;
    --color-border: #22353A;
    --color-border-strong: #5C7478;
    --color-text: #E6EEEE;
    --color-text-2: #9DB0B2;
    --color-primary: #3CC4B0;
    --color-primary-hover: #5ED3C1;
    --color-on-primary: #04201D;
    --color-accent: #F0A04B;
    --color-on-accent: #1A0D02;
    --color-success: #4CC27A;
    --color-warning: #F2C14E;
    --color-error: #F97066;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.45), 0 1px 3px rgba(0,0,0,0.35);
    --shadow-lg: 0 12px 32px rgba(0,0,0,0.55), 0 2px 6px rgba(0,0,0,0.35);
    --shadow-focus: 0 0 0 3px rgba(60,196,176,0.45);
  }
}

@media (prefers-reduced-motion: reduce) {
  :root { --duration-instant: 0ms; --duration-fast: 0ms; --duration-base: 0ms; --duration-slow: 0ms; }
}

/* Base opcional */
html { background: var(--color-bg); color: var(--color-text); font-family: var(--font-body); font-size: 100%; line-height: var(--leading-normal); -webkit-font-smoothing: antialiased; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: var(--weight-bold); letter-spacing: var(--tracking-tight); line-height: var(--leading-tight); }
.num, code, kbd { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }