/* =========================================================================
   M3 Core — theme-independent system tokens + base styles
   Load order: m3-core.css → themes/<name>/tokens.css → components.css → page CSS
   Naming follows Material 3: --md-ref-* (raw) → --md-sys-* (semantic).
   Fallback values make this file render sensibly even without a theme.
   ========================================================================= */

:root {
  /* ---------- Typeface fallbacks (theme overrides) ---------- */
  --md-ref-typeface-brand: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --md-ref-typeface-plain: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --md-ref-typeface-mono: ui-monospace, "SFMono-Regular", Consolas, monospace;

  /* ---------- Type scale (M3 baseline, rem @ 16px root) ----------
     Display/headline use brand face; title/body/label use plain face.
     Display + headline-large are fluid between 360px and 1440px viewports. */
  --md-sys-typescale-display-large-size: clamp(2.75rem, 1.9rem + 3.8vw, 3.5625rem);  /* 57 */
  --md-sys-typescale-display-large-line-height: 1.12;
  --md-sys-typescale-display-large-tracking: -0.015em;
  --md-sys-typescale-display-medium-size: clamp(2.25rem, 1.7rem + 2.4vw, 2.8125rem); /* 45 */
  --md-sys-typescale-display-medium-line-height: 1.16;
  --md-sys-typescale-display-small-size: clamp(1.875rem, 1.5rem + 1.6vw, 2.25rem);   /* 36 */
  --md-sys-typescale-display-small-line-height: 1.22;
  --md-sys-typescale-headline-large-size: clamp(1.625rem, 1.4rem + 1vw, 2rem);       /* 32 */
  --md-sys-typescale-headline-large-line-height: 1.25;
  --md-sys-typescale-headline-medium-size: 1.75rem;   /* 28 */
  --md-sys-typescale-headline-medium-line-height: 1.29;
  --md-sys-typescale-headline-small-size: 1.5rem;     /* 24 */
  --md-sys-typescale-headline-small-line-height: 1.33;
  --md-sys-typescale-title-large-size: 1.375rem;      /* 22 */
  --md-sys-typescale-title-large-line-height: 1.27;
  --md-sys-typescale-title-medium-size: 1rem;         /* 16 */
  --md-sys-typescale-title-medium-line-height: 1.5;
  --md-sys-typescale-title-small-size: 0.875rem;      /* 14 */
  --md-sys-typescale-title-small-line-height: 1.43;
  --md-sys-typescale-body-large-size: 1rem;           /* 16 */
  --md-sys-typescale-body-large-line-height: 1.5;
  --md-sys-typescale-body-medium-size: 0.875rem;      /* 14 */
  --md-sys-typescale-body-medium-line-height: 1.43;
  --md-sys-typescale-body-small-size: 0.75rem;        /* 12 */
  --md-sys-typescale-body-small-line-height: 1.33;
  --md-sys-typescale-label-large-size: 0.875rem;      /* 14 */
  --md-sys-typescale-label-large-line-height: 1.43;
  --md-sys-typescale-label-medium-size: 0.75rem;      /* 12 */
  --md-sys-typescale-label-small-size: 0.6875rem;     /* 11 */

  --md-sys-typescale-weight-regular: 400;
  --md-sys-typescale-weight-medium: 500;
  --md-sys-typescale-weight-bold: 700;

  /* ---------- Spacing (4px base, 8px rhythm) ---------- */
  --md-sys-space-0: 0;
  --md-sys-space-1: 0.25rem;  /* 4  */
  --md-sys-space-2: 0.5rem;   /* 8  */
  --md-sys-space-3: 0.75rem;  /* 12 */
  --md-sys-space-4: 1rem;     /* 16 */
  --md-sys-space-5: 1.5rem;   /* 24 */
  --md-sys-space-6: 2rem;     /* 32 */
  --md-sys-space-7: 3rem;     /* 48 */
  --md-sys-space-8: 4rem;     /* 64 */
  --md-sys-space-9: 6rem;     /* 96 */
  --md-sys-space-section: clamp(3rem, 2rem + 5vw, 7.5rem); /* vertical section padding */

  /* ---------- Layout ---------- */
  --md-sys-layout-max-width: 1200px;
  --md-sys-layout-max-width-wide: 1440px;
  --md-sys-layout-max-width-prose: 68ch;
  --md-sys-layout-gutter: clamp(1rem, 0.5rem + 2.5vw, 1.5rem);
  /* Breakpoints (M3 window classes) — reference only, CSS vars can't be used in @media:
     compact <600 · medium 600–839 · expanded 840–1199 · large 1200–1599 · extra-large ≥1600 */

  /* ---------- Shape fallbacks (theme overrides) ---------- */
  --md-sys-shape-corner-none: 0;
  --md-sys-shape-corner-extra-small: 4px;
  --md-sys-shape-corner-small: 8px;
  --md-sys-shape-corner-medium: 12px;
  --md-sys-shape-corner-large: 16px;
  --md-sys-shape-corner-extra-large: 28px;
  --md-sys-shape-corner-full: 9999px;

  /* ---------- Elevation (M3 levels 0–5) ---------- */
  --md-sys-elevation-0: none;
  --md-sys-elevation-1: 0 1px 2px rgb(0 0 0 / .30), 0 1px 3px 1px rgb(0 0 0 / .15);
  --md-sys-elevation-2: 0 1px 2px rgb(0 0 0 / .30), 0 2px 6px 2px rgb(0 0 0 / .15);
  --md-sys-elevation-3: 0 1px 3px rgb(0 0 0 / .30), 0 4px 8px 3px rgb(0 0 0 / .15);
  --md-sys-elevation-4: 0 2px 3px rgb(0 0 0 / .30), 0 6px 10px 4px rgb(0 0 0 / .15);
  --md-sys-elevation-5: 0 4px 4px rgb(0 0 0 / .30), 0 8px 12px 6px rgb(0 0 0 / .15);

  /* ---------- State layers (opacity of on-color over container) ---------- */
  --md-sys-state-hover: 0.08;
  --md-sys-state-focus: 0.10;
  --md-sys-state-pressed: 0.10;
  --md-sys-state-dragged: 0.16;
  --md-sys-state-disabled-container: 0.12;
  --md-sys-state-disabled-content: 0.38;

  /* ---------- Motion (M3 easing + duration) ---------- */
  --md-sys-motion-easing-standard: cubic-bezier(0.2, 0, 0, 1);
  --md-sys-motion-easing-standard-decelerate: cubic-bezier(0, 0, 0, 1);
  --md-sys-motion-easing-standard-accelerate: cubic-bezier(0.3, 0, 1, 1);
  --md-sys-motion-easing-emphasized-decelerate: cubic-bezier(0.05, 0.7, 0.1, 1);
  --md-sys-motion-easing-emphasized-accelerate: cubic-bezier(0.3, 0, 0.8, 0.15);
  --md-sys-motion-duration-short: 150ms;
  --md-sys-motion-duration-medium: 300ms;
  --md-sys-motion-duration-long: 500ms;

  /* ---------- Color fallbacks (neutral, used only if no theme loaded) ---------- */
  --md-sys-color-primary: #415f91;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #d6e3ff;
  --md-sys-color-on-primary-container: #001b3e;
  --md-sys-color-secondary-container: #dae2f9;
  --md-sys-color-on-secondary-container: #131c2b;
  --md-sys-color-surface: #f9f9ff;
  --md-sys-color-on-surface: #191c20;
  --md-sys-color-on-surface-variant: #44474e;
  --md-sys-color-surface-container-low: #f3f3fa;
  --md-sys-color-surface-container: #ededf4;
  --md-sys-color-surface-container-high: #e7e8ee;
  --md-sys-color-outline: #74777f;
  --md-sys-color-outline-variant: #c4c6d0;
  --md-sys-color-error: #ba1a1a;
  --md-sys-color-on-error: #ffffff;
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  :root {
    --md-sys-motion-duration-short: 0ms;
    --md-sys-motion-duration-medium: 0ms;
    --md-sys-motion-duration-long: 0ms;
  }
  *, *::before, *::after { scroll-behavior: auto !important; }
}

/* =========================================================================
   Base layer — scoped with :where() so it has zero specificity and never
   fights Elementor / theme / addon CSS.
   ========================================================================= */
:where(.m3-root, body.m3) {
  background: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  font-family: var(--md-ref-typeface-plain);
  font-size: var(--md-sys-typescale-body-large-size);
  line-height: var(--md-sys-typescale-body-large-line-height);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
:where(.m3-root, body.m3) :where(h1, h2, h3, h4) {
  font-family: var(--md-ref-typeface-brand);
  text-wrap: balance;
  margin: 0 0 var(--md-sys-space-4);
}
:where(.m3-root, body.m3) :where(p) { text-wrap: pretty; margin: 0 0 var(--md-sys-space-4); }
:where(.m3-root, body.m3) :where(a) { color: var(--md-sys-color-primary); text-underline-offset: 0.15em; }
:where(.m3-root, body.m3) :where(img, svg, video) { max-width: 100%; height: auto; }

/* Focus ring — visible for keyboard users only */
:where(.m3-root, body.m3) :focus-visible {
  outline: 3px solid var(--md-sys-color-primary);
  outline-offset: 2px;
  border-radius: var(--md-sys-shape-corner-extra-small);
}

/* =========================================================================
   Type utilities — apply the M3 role in one class
   ========================================================================= */
.m3-display-large  { font: var(--md-sys-typescale-weight-regular) var(--md-sys-typescale-display-large-size)/var(--md-sys-typescale-display-large-line-height) var(--md-ref-typeface-brand); letter-spacing: var(--md-sys-typescale-display-large-tracking); }
.m3-display-medium { font: var(--md-sys-typescale-weight-regular) var(--md-sys-typescale-display-medium-size)/var(--md-sys-typescale-display-medium-line-height) var(--md-ref-typeface-brand); }
.m3-display-small  { font: var(--md-sys-typescale-weight-regular) var(--md-sys-typescale-display-small-size)/var(--md-sys-typescale-display-small-line-height) var(--md-ref-typeface-brand); }
.m3-headline-large { font: var(--md-sys-typescale-weight-regular) var(--md-sys-typescale-headline-large-size)/var(--md-sys-typescale-headline-large-line-height) var(--md-ref-typeface-brand); }
.m3-headline-medium{ font: var(--md-sys-typescale-weight-regular) var(--md-sys-typescale-headline-medium-size)/var(--md-sys-typescale-headline-medium-line-height) var(--md-ref-typeface-brand); }
.m3-headline-small { font: var(--md-sys-typescale-weight-regular) var(--md-sys-typescale-headline-small-size)/var(--md-sys-typescale-headline-small-line-height) var(--md-ref-typeface-brand); }
.m3-title-large    { font: var(--md-sys-typescale-weight-regular) var(--md-sys-typescale-title-large-size)/var(--md-sys-typescale-title-large-line-height) var(--md-ref-typeface-plain); }
.m3-title-medium   { font: var(--md-sys-typescale-weight-medium) var(--md-sys-typescale-title-medium-size)/var(--md-sys-typescale-title-medium-line-height) var(--md-ref-typeface-plain); letter-spacing: 0.01em; }
.m3-title-small    { font: var(--md-sys-typescale-weight-medium) var(--md-sys-typescale-title-small-size)/var(--md-sys-typescale-title-small-line-height) var(--md-ref-typeface-plain); letter-spacing: 0.007em; }
.m3-body-large     { font: var(--md-sys-typescale-weight-regular) var(--md-sys-typescale-body-large-size)/var(--md-sys-typescale-body-large-line-height) var(--md-ref-typeface-plain); }
.m3-body-medium    { font: var(--md-sys-typescale-weight-regular) var(--md-sys-typescale-body-medium-size)/var(--md-sys-typescale-body-medium-line-height) var(--md-ref-typeface-plain); }
.m3-body-small     { font: var(--md-sys-typescale-weight-regular) var(--md-sys-typescale-body-small-size)/var(--md-sys-typescale-body-small-line-height) var(--md-ref-typeface-plain); }
.m3-label-large    { font: var(--md-sys-typescale-weight-medium) var(--md-sys-typescale-label-large-size)/var(--md-sys-typescale-label-large-line-height) var(--md-ref-typeface-plain); letter-spacing: 0.007em; }
.m3-label-medium   { font: var(--md-sys-typescale-weight-medium) var(--md-sys-typescale-label-medium-size)/1.33 var(--md-ref-typeface-plain); letter-spacing: 0.04em; }
.m3-label-small    { font: var(--md-sys-typescale-weight-medium) var(--md-sys-typescale-label-small-size)/1.45 var(--md-ref-typeface-plain); letter-spacing: 0.045em; }

/* =========================================================================
   Layout primitives
   ========================================================================= */
.m3-container {
  width: min(100% - 2 * var(--md-sys-layout-gutter), var(--md-sys-layout-max-width));
  margin-inline: auto;
}
.m3-container--wide  { width: min(100% - 2 * var(--md-sys-layout-gutter), var(--md-sys-layout-max-width-wide)); }
.m3-container--prose { width: min(100% - 2 * var(--md-sys-layout-gutter), var(--md-sys-layout-max-width-prose)); }
.m3-section { padding-block: var(--md-sys-space-section); }
.m3-stack > * + * { margin-block-start: var(--m3-stack-gap, var(--md-sys-space-4)); }
.m3-grid {
  display: grid;
  gap: var(--m3-grid-gap, var(--md-sys-space-5));
  grid-template-columns: repeat(auto-fit, minmax(min(100%, var(--m3-grid-min, 280px)), 1fr));
}
.m3-visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}