/*!
 * Explorio V10000+ Core CSS
 * File: public_html/assets/core.css
 * Responsibility: design tokens, reset, base rendering, typography,
 * layout primitives, utilities, accessibility, themes and print foundation.
 * Version: 10000.26.0
 */

@layer tokens, reset, base, layout, utilities, accessibility, themes, print-base;

@layer tokens {
  :root {
    color-scheme: light dark;

    /* Brand and semantic color tokens */
    --color-brand-50: #eff8ff;
    --color-brand-100: #dbeeff;
    --color-brand-200: #b9ddff;
    --color-brand-300: #88c7ff;
    --color-brand-400: #52a9ff;
    --color-brand-500: #2688f2;
    --color-brand-600: #1469cf;
    --color-brand-700: #1255a7;
    --color-brand-800: #144986;
    --color-brand-900: #173e6d;
    --color-brand-950: #102846;

    --color-accent-50: #fff8eb;
    --color-accent-100: #ffedc6;
    --color-accent-200: #ffda88;
    --color-accent-300: #ffc24a;
    --color-accent-400: #f7a71c;
    --color-accent-500: #dc8510;
    --color-accent-600: #b9620b;
    --color-accent-700: #94490d;
    --color-accent-800: #793b11;
    --color-accent-900: #643214;

    --color-success-50: #edfdf4;
    --color-success-500: #15803d;
    --color-success-700: #166534;
    --color-warning-50: #fffbea;
    --color-warning-500: #ca8a04;
    --color-warning-700: #a16207;
    --color-danger-50: #fff1f2;
    --color-danger-500: #dc2626;
    --color-danger-700: #b91c1c;
    --color-info-50: #eef6ff;
    --color-info-500: #2563eb;
    --color-info-700: #1d4ed8;

    --color-white: #ffffff;
    --color-black: #000000;
    --color-gray-25: #fcfcfd;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;
    --color-gray-950: #020617;

    /* Semantic surface tokens */
    --color-canvas: var(--color-gray-50);
    --color-surface: var(--color-white);
    --color-surface-muted: var(--color-gray-100);
    --color-surface-elevated: var(--color-white);
    --color-surface-inverse: var(--color-gray-900);
    --color-text: var(--color-gray-900);
    --color-text-muted: var(--color-gray-600);
    --color-text-subtle: var(--color-gray-500);
    --color-text-inverse: var(--color-white);
    --color-border: var(--color-gray-200);
    --color-border-strong: var(--color-gray-300);
    --color-focus: var(--color-brand-500);
    --color-link: var(--color-brand-700);
    --color-link-hover: var(--color-brand-900);
    --color-selection-bg: var(--color-brand-200);
    --color-selection-text: var(--color-brand-950);

    /* Typography */
    --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
      "Segoe UI", sans-serif;
    --font-serif: Georgia, Cambria, "Times New Roman", serif;
    --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;

    --font-size-2xs: 0.6875rem;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    --font-size-7xl: 4.5rem;

    --line-height-tight: 1.15;
    --line-height-snug: 1.3;
    --line-height-normal: 1.55;
    --line-height-relaxed: 1.7;
    --letter-spacing-tight: -0.025em;
    --letter-spacing-normal: 0;
    --letter-spacing-wide: 0.04em;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;

    /* Spacing */
    --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-7: 1.75rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-14: 3.5rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-28: 7rem;
    --space-32: 8rem;

    /* Containers */
    --container-xs: 30rem;
    --container-sm: 40rem;
    --container-md: 48rem;
    --container-lg: 64rem;
    --container-xl: 75rem;
    --container-2xl: 90rem;
    --page-gutter: clamp(1rem, 2.5vw, 2rem);

    /* Borders, radii and shadows */
    --border-width: 1px;
    --border-width-strong: 2px;
    --radius-xs: 0.25rem;
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-pill: 999rem;
    --shadow-xs: 0 1px 2px rgb(15 23 42 / 0.05);
    --shadow-sm: 0 2px 8px rgb(15 23 42 / 0.08);
    --shadow-md: 0 8px 24px rgb(15 23 42 / 0.10);
    --shadow-lg: 0 18px 48px rgb(15 23 42 / 0.14);
    --shadow-focus: 0 0 0 3px rgb(38 136 242 / 0.28);

    /* Layers */
    --z-base: 0;
    --z-raised: 10;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-overlay: 300;
    --z-modal: 400;
    --z-toast: 500;
    --z-skip-link: 1000;

    /* Motion */
    --duration-instant: 0ms;
    --duration-fast: 120ms;
    --duration-normal: 220ms;
    --duration-slow: 360ms;
    --ease-standard: cubic-bezier(0.2, 0, 0, 1);
    --ease-emphasized: cubic-bezier(0.2, 0.8, 0.2, 1);

    /* Sizing */
    --touch-target: 2.75rem;
    --header-height: 4.5rem;
    --content-measure: 70ch;
  }
}

@layer reset {
  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }

  html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    scroll-behavior: smooth;
    tab-size: 4;
  }

  body,
  h1,
  h2,
  h3,
  h4,
  h5,
  h6,
  p,
  blockquote,
  figure,
  dl,
  dd {
    margin: 0;
  }

  ul,
  ol {
    margin: 0;
    padding: 0;
  }

  img,
  picture,
  video,
  canvas,
  svg {
    display: block;
    max-width: 100%;
  }

  img,
  video {
    height: auto;
  }

  button,
  input,
  select,
  textarea {
    margin: 0;
    color: inherit;
    font: inherit;
  }

  button,
  [type="button"],
  [type="reset"],
  [type="submit"] {
    -webkit-appearance: button;
    appearance: button;
  }

  table {
    border-collapse: collapse;
    border-spacing: 0;
  }

  [hidden] {
    display: none !important;
  }

  [inert] {
    pointer-events: none;
    user-select: none;
  }
}

@layer base {
  html {
    min-width: 20rem;
    background: var(--color-canvas);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: 100%;
    line-height: var(--line-height-normal);
    hanging-punctuation: first last;
  }

  body {
    min-height: 100vh;
    min-height: 100dvh;
    background: var(--color-canvas);
    color: var(--color-text);
    font-size: var(--font-size-md);
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    overflow-wrap: anywhere;
  }

  body.is-scroll-locked {
    overflow: hidden;
  }

  ::selection {
    background: var(--color-selection-bg);
    color: var(--color-selection-text);
  }

  :where(h1, h2, h3, h4, h5, h6) {
    color: var(--color-text);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
    text-wrap: balance;
  }

  h1 { font-size: clamp(2.25rem, 5vw, var(--font-size-7xl)); }
  h2 { font-size: clamp(1.875rem, 4vw, var(--font-size-5xl)); }
  h3 { font-size: clamp(1.5rem, 3vw, var(--font-size-4xl)); }
  h4 { font-size: var(--font-size-2xl); }
  h5 { font-size: var(--font-size-xl); }
  h6 { font-size: var(--font-size-lg); }

  :where(p, li, dd, dt, blockquote, figcaption) {
    max-width: var(--content-measure);
  }

  :where(p, ul, ol, dl, blockquote, pre, table) + :where(p, ul, ol, dl, blockquote, pre, table) {
    margin-block-start: var(--space-4);
  }

  a {
    color: var(--color-link);
    text-decoration-line: underline;
    text-decoration-thickness: 0.08em;
    text-underline-offset: 0.18em;
    transition:
      color var(--duration-fast) var(--ease-standard),
      text-decoration-color var(--duration-fast) var(--ease-standard);
  }

  a:hover {
    color: var(--color-link-hover);
  }

  a:focus-visible,
  button:focus-visible,
  input:focus-visible,
  select:focus-visible,
  textarea:focus-visible,
  summary:focus-visible,
  [tabindex]:focus-visible {
    outline: 3px solid var(--color-focus);
    outline-offset: 3px;
  }

  strong,
  b {
    font-weight: var(--font-weight-bold);
  }

  small {
    font-size: var(--font-size-sm);
  }

  code,
  kbd,
  samp,
  pre {
    font-family: var(--font-mono);
  }

  code {
    border-radius: var(--radius-xs);
    background: var(--color-surface-muted);
    padding: 0.1em 0.3em;
    font-size: 0.925em;
  }

  pre {
    overflow: auto;
    border: var(--border-width) solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    padding: var(--space-4);
  }

  blockquote {
    border-inline-start: 0.25rem solid var(--color-brand-500);
    color: var(--color-text-muted);
    padding-inline-start: var(--space-5);
  }

  hr {
    border: 0;
    border-block-start: var(--border-width) solid var(--color-border);
    margin-block: var(--space-8);
  }

  table {
    width: 100%;
    background: var(--color-surface);
  }

  th,
  td {
    border-block-end: var(--border-width) solid var(--color-border);
    padding: var(--space-3) var(--space-4);
    text-align: start;
    vertical-align: top;
  }

  th {
    font-weight: var(--font-weight-semibold);
  }

  label,
  legend {
    font-weight: var(--font-weight-semibold);
  }

  fieldset {
    min-width: 0;
    border: var(--border-width) solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-4);
  }

  input,
  select,
  textarea {
    width: 100%;
    min-height: var(--touch-target);
    border: var(--border-width) solid var(--color-border-strong);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    color: var(--color-text);
    padding: 0.6875rem 0.875rem;
  }

  textarea {
    min-height: 8rem;
    resize: vertical;
  }

  input::placeholder,
  textarea::placeholder {
    color: var(--color-text-subtle);
    opacity: 1;
  }

  input:disabled,
  select:disabled,
  textarea:disabled,
  button:disabled {
    cursor: not-allowed;
    opacity: 0.58;
  }

  button {
    min-height: var(--touch-target);
    border: 0;
    border-radius: var(--radius-sm);
    cursor: pointer;
  }

  summary {
    cursor: pointer;
  }

  dialog {
    max-width: min(90vw, 45rem);
    border: var(--border-width) solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-surface);
    color: var(--color-text);
    box-shadow: var(--shadow-lg);
  }

  dialog::backdrop {
    background: rgb(2 6 23 / 0.64);
    backdrop-filter: blur(4px);
  }
}

@layer layout {
  .container,
  .l-container {
    width: min(100% - (2 * var(--page-gutter)), var(--container-xl));
    margin-inline: auto;
  }

  .container--narrow,
  .l-container--narrow {
    max-width: var(--container-md);
  }

  .container--wide,
  .l-container--wide {
    max-width: var(--container-2xl);
  }

  .section,
  .l-section {
    padding-block: clamp(var(--space-12), 8vw, var(--space-24));
  }

  .section--compact,
  .l-section--compact {
    padding-block: clamp(var(--space-8), 5vw, var(--space-14));
  }

  .stack,
  .l-stack {
    display: flex;
    flex-direction: column;
    gap: var(--stack-gap, var(--space-4));
  }

  .cluster,
  .l-cluster {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--cluster-gap, var(--space-3));
  }

  .cluster--between {
    justify-content: space-between;
  }

  .grid,
  .l-grid {
    display: grid;
    grid-template-columns: repeat(
      auto-fit,
      minmax(min(100%, var(--grid-min, 16rem)), 1fr)
    );
    gap: var(--grid-gap, var(--space-6));
  }

  .sidebar,
  .l-sidebar {
    display: grid;
    grid-template-columns:
      minmax(0, var(--sidebar-width, 18rem))
      minmax(0, 1fr);
    gap: var(--space-8);
  }

  .switcher,
  .l-switcher {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
  }

  .switcher > *,
  .l-switcher > * {
    flex: 1 1 var(--switcher-basis, 18rem);
  }

  .cover,
  .l-cover {
    display: grid;
    min-height: var(--cover-min-height, 70vh);
    min-height: var(--cover-min-height, 70dvh);
    align-content: center;
  }

  .flow > * + * {
    margin-block-start: var(--flow-space, var(--space-4));
  }

  .bleed {
    width: 100vw;
    margin-inline: calc(50% - 50vw);
  }

  .scroll-region {
    overflow: auto;
    overscroll-behavior: contain;
    scrollbar-gutter: stable;
  }

  .aspect-square { aspect-ratio: 1; }
  .aspect-video { aspect-ratio: 16 / 9; }
  .aspect-photo { aspect-ratio: 4 / 3; }

  @media (max-width: 48rem) {
    .sidebar,
    .l-sidebar {
      grid-template-columns: 1fr;
    }
  }
}

@layer utilities {
  .u-hidden,
  .is-hidden {
    display: none !important;
  }

  .u-invisible {
    visibility: hidden !important;
  }

  .u-block { display: block !important; }
  .u-inline { display: inline !important; }
  .u-inline-block { display: inline-block !important; }
  .u-flex { display: flex !important; }
  .u-grid { display: grid !important; }

  .u-flex-wrap { flex-wrap: wrap !important; }
  .u-items-center { align-items: center !important; }
  .u-justify-between { justify-content: space-between !important; }

  .u-w-full { width: 100% !important; }
  .u-max-w-prose { max-width: var(--content-measure) !important; }
  .u-mx-auto { margin-inline: auto !important; }

  .u-text-left { text-align: left !important; }
  .u-text-center { text-align: center !important; }
  .u-text-right { text-align: right !important; }

  .u-text-muted { color: var(--color-text-muted) !important; }
  .u-text-subtle { color: var(--color-text-subtle) !important; }
  .u-text-success { color: var(--color-success-700) !important; }
  .u-text-warning { color: var(--color-warning-700) !important; }
  .u-text-danger { color: var(--color-danger-700) !important; }

  .u-bg-surface { background: var(--color-surface) !important; }
  .u-bg-muted { background: var(--color-surface-muted) !important; }
  .u-rounded { border-radius: var(--radius-md) !important; }
  .u-shadow { box-shadow: var(--shadow-sm) !important; }
  .u-border { border: var(--border-width) solid var(--color-border) !important; }

  .u-overflow-hidden { overflow: hidden !important; }
  .u-overflow-auto { overflow: auto !important; }

  .u-break-words { overflow-wrap: anywhere !important; }
  .u-nowrap { white-space: nowrap !important; }

  .u-list-reset {
    margin: 0 !important;
    padding: 0 !important;
    list-style: none !important;
  }

  .u-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .u-line-clamp-2,
  .u-line-clamp-3 {
    display: -webkit-box;
    overflow: hidden;
    -webkit-box-orient: vertical;
  }

  .u-line-clamp-2 { -webkit-line-clamp: 2; }
  .u-line-clamp-3 { -webkit-line-clamp: 3; }

  .u-mt-0 { margin-block-start: 0 !important; }
  .u-mt-2 { margin-block-start: var(--space-2) !important; }
  .u-mt-4 { margin-block-start: var(--space-4) !important; }
  .u-mt-6 { margin-block-start: var(--space-6) !important; }
  .u-mt-8 { margin-block-start: var(--space-8) !important; }

  .u-gap-2 { gap: var(--space-2) !important; }
  .u-gap-4 { gap: var(--space-4) !important; }
  .u-gap-6 { gap: var(--space-6) !important; }
  .u-gap-8 { gap: var(--space-8) !important; }

  .u-p-0 { padding: 0 !important; }
  .u-p-2 { padding: var(--space-2) !important; }
  .u-p-4 { padding: var(--space-4) !important; }
  .u-p-6 { padding: var(--space-6) !important; }
  .u-p-8 { padding: var(--space-8) !important; }

  .u-sr-only,
  .sr-only {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0 0 0 0) !important;
    clip-path: inset(50%) !important;
    border: 0 !important;
    padding: 0 !important;
    white-space: nowrap !important;
  }

  .u-sr-only-focusable:focus,
  .sr-only-focusable:focus {
    position: static !important;
    width: auto !important;
    height: auto !important;
    margin: 0 !important;
    overflow: visible !important;
    clip: auto !important;
    clip-path: none !important;
    white-space: normal !important;
  }
}

@layer accessibility {
  .skip-link {
    position: fixed;
    inset-block-start: var(--space-2);
    inset-inline-start: var(--space-2);
    z-index: var(--z-skip-link);
    transform: translateY(-200%);
    border-radius: var(--radius-sm);
    background: var(--color-surface-inverse);
    color: var(--color-text-inverse);
    padding: var(--space-3) var(--space-4);
    text-decoration: none;
    transition: transform var(--duration-fast) var(--ease-standard);
  }

  .skip-link:focus {
    transform: translateY(0);
  }

  :target {
    scroll-margin-block-start: calc(var(--header-height) + var(--space-4));
  }

  [aria-busy="true"] {
    cursor: progress;
  }

  [aria-invalid="true"] {
    border-color: var(--color-danger-500) !important;
    box-shadow: 0 0 0 3px rgb(220 38 38 / 0.16);
  }

  [aria-current="page"] {
    font-weight: var(--font-weight-bold);
  }

  .focus-ring {
    outline: 3px solid var(--color-focus);
    outline-offset: 3px;
  }

  .touch-target {
    min-width: var(--touch-target);
    min-height: var(--touch-target);
  }

  @media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
      scroll-behavior: auto !important;
      animation-duration: 0.001ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.001ms !important;
      transition-delay: 0ms !important;
    }
  }

  @media (prefers-reduced-transparency: reduce) {
    *,
    *::before,
    *::after {
      backdrop-filter: none !important;
    }
  }

  @media (forced-colors: active) {
    :root {
      --color-focus: Highlight;
      --color-border: CanvasText;
      --color-border-strong: CanvasText;
    }

    a,
    button,
    input,
    select,
    textarea,
    summary {
      forced-color-adjust: auto;
    }
  }
}

@layer themes {
  :root,
  [data-theme="light"] {
    color-scheme: light;
    --color-canvas: var(--color-gray-50);
    --color-surface: var(--color-white);
    --color-surface-muted: var(--color-gray-100);
    --color-surface-elevated: var(--color-white);
    --color-surface-inverse: var(--color-gray-900);
    --color-text: var(--color-gray-900);
    --color-text-muted: var(--color-gray-600);
    --color-text-subtle: var(--color-gray-500);
    --color-text-inverse: var(--color-white);
    --color-border: var(--color-gray-200);
    --color-border-strong: var(--color-gray-300);
  }

  [data-theme="dark"] {
    color-scheme: dark;
    --color-canvas: #08111f;
    --color-surface: #0f1b2d;
    --color-surface-muted: #15243a;
    --color-surface-elevated: #17263d;
    --color-surface-inverse: #f8fafc;
    --color-text: #f8fafc;
    --color-text-muted: #cbd5e1;
    --color-text-subtle: #94a3b8;
    --color-text-inverse: #0f172a;
    --color-border: #2a3a51;
    --color-border-strong: #3b4d67;
    --color-link: #88c7ff;
    --color-link-hover: #b9ddff;
    --color-selection-bg: #1255a7;
    --color-selection-text: #ffffff;
    --shadow-xs: 0 1px 2px rgb(0 0 0 / 0.25);
    --shadow-sm: 0 2px 8px rgb(0 0 0 / 0.30);
    --shadow-md: 0 8px 24px rgb(0 0 0 / 0.34);
    --shadow-lg: 0 18px 48px rgb(0 0 0 / 0.40);
  }

  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
      color-scheme: dark;
      --color-canvas: #08111f;
      --color-surface: #0f1b2d;
      --color-surface-muted: #15243a;
      --color-surface-elevated: #17263d;
      --color-surface-inverse: #f8fafc;
      --color-text: #f8fafc;
      --color-text-muted: #cbd5e1;
      --color-text-subtle: #94a3b8;
      --color-text-inverse: #0f172a;
      --color-border: #2a3a51;
      --color-border-strong: #3b4d67;
      --color-link: #88c7ff;
      --color-link-hover: #b9ddff;
      --color-selection-bg: #1255a7;
      --color-selection-text: #ffffff;
    }
  }

  [data-contrast="high"] {
    --color-canvas: Canvas;
    --color-surface: Canvas;
    --color-surface-muted: Canvas;
    --color-text: CanvasText;
    --color-text-muted: CanvasText;
    --color-text-subtle: CanvasText;
    --color-border: CanvasText;
    --color-border-strong: CanvasText;
    --color-link: LinkText;
    --color-link-hover: LinkText;
    --color-focus: Highlight;
    --shadow-xs: none;
    --shadow-sm: none;
    --shadow-md: none;
    --shadow-lg: none;
  }
}

@layer print-base {
  @media print {
    @page {
      margin: 16mm;
      size: auto;
    }

    :root {
      color-scheme: light;
      --color-canvas: #ffffff;
      --color-surface: #ffffff;
      --color-surface-muted: #f5f5f5;
      --color-text: #000000;
      --color-text-muted: #222222;
      --color-border: #999999;
      --color-link: #000000;
    }

    html,
    body {
      background: #ffffff !important;
      color: #000000 !important;
      font-size: 11pt;
    }

    *,
    *::before,
    *::after {
      box-shadow: none !important;
      text-shadow: none !important;
      animation: none !important;
      transition: none !important;
    }

    a {
      color: #000000 !important;
      text-decoration: underline;
    }

    a[href^="http"]::after {
      content: " (" attr(href) ")";
      font-size: 0.85em;
      overflow-wrap: anywhere;
    }

    img,
    svg {
      break-inside: avoid;
    }

    h1,
    h2,
    h3,
    h4,
    h5,
    h6 {
      break-after: avoid;
    }

    table,
    pre,
    blockquote,
    figure {
      break-inside: avoid;
    }

    .no-print,
    [data-print="hide"] {
      display: none !important;
    }

    .print-only,
    [data-print="show"] {
      display: block !important;
    }

    .container,
    .l-container {
      width: 100% !important;
      max-width: none !important;
      margin: 0 !important;
    }
  }
}