/* =============================================================================
   ERDI BAU NYÍLÁSZÁRÓ — CLEAN REBUILD · DESIGN SYSTEM (core)
   -----------------------------------------------------------------------------
   Saját, nulláról írt design system: saját `--eb-*` tokennévtér, saját
   `eb-*` osztálynévtér, modern CSS (custom properties, flex, grid, clamp,
   aspect-ratio). A jóváhagyott ErdiBau vizuális karaktert reprodukálja.
   Réteg-sorrend a tiszta kaszkádért:
   ============================================================================= */
@layer tokens, reset, base, layout, components, utilities, responsive;

/* ============================================================
   1) DESIGN TOKENEK
   ============================================================ */
@layer tokens {
  :root {
    /* --- Márkaszínek (steel-blue + navy) --- */
    --eb-primary:      #2a71a0;   /* fő márkakék */
    --eb-primary-600:  #24618b;
    --eb-primary-700:  #1d4f72;
    --eb-primary-100:  #dce9f2;   /* halvány felület */
    --eb-primary-050:  #eef4f9;
    --eb-primary-tint: rgba(42, 113, 160, .10);

    --eb-navy:  #11113d;   /* másodlagos, mély */
    --eb-ink:   #172238;   /* fő szöveg / sötét felület */
    --eb-body:  #3c4657;   /* törzsszöveg */
    --eb-muted: #6a7688;   /* halvány szöveg */

    --eb-line:    #e6e8ee;  /* keret / elválasztó */
    --eb-line-2:  #eff1f5;
    --eb-surface: #ffffff;  /* kártya / panel */
    --eb-canvas:  #f5f6f9;  /* oldalháttér */
    --eb-white:   #ffffff;

    /* --- Tipográfia --- */
    --eb-font-head: "Red Hat Display", system-ui, -apple-system, "Segoe UI", sans-serif;
    --eb-font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

    --eb-fs-body:  1rem;                          /* 16px */
    --eb-fs-sm:    .875rem;                        /* 14px */
    --eb-fs-xs:    .8125rem;                       /* 13px */
    --eb-fs-lead:  clamp(1.05rem, .98rem + .35vw, 1.2rem);
    --eb-fs-h1:    clamp(2rem, 1.5rem + 2.2vw, 3.25rem);
    --eb-fs-h2:    clamp(1.6rem, 1.3rem + 1.4vw, 2.35rem);
    --eb-fs-h3:    clamp(1.25rem, 1.1rem + .7vw, 1.6rem);
    --eb-fs-h4:    clamp(1.1rem, 1.02rem + .4vw, 1.3rem);
    --eb-fs-eyebrow: .8125rem;

    --eb-lh-tight: 1.15;
    --eb-lh-head:  1.2;
    --eb-lh-body:  1.7;

    /* --- Térköz-skála --- */
    --eb-sp-1: .25rem;
    --eb-sp-2: .5rem;
    --eb-sp-3: .75rem;
    --eb-sp-4: 1rem;
    --eb-sp-5: 1.5rem;
    --eb-sp-6: 2rem;
    --eb-sp-7: 3rem;
    --eb-sp-8: 4rem;
    --eb-section: clamp(3.5rem, 2.5rem + 4vw, 6rem);  /* függőleges szekció-ritmus */

    /* --- Elrendezés --- */
    --eb-container: 1300px;   /* fő tartalmi szélesség */
    --eb-container-wide: 1400px;
    --eb-gutter: clamp(1rem, .5rem + 2.5vw, 2.5rem);

    /* --- Sugarak --- */
    --eb-r-sm: 10px;
    --eb-r:    14px;
    --eb-r-lg: 18px;
    --eb-r-xl: 24px;
    --eb-pill: 999px;

    /* --- Árnyékok --- */
    --eb-sh-sm: 0 2px 8px rgba(23, 34, 56, .06);
    --eb-sh:    0 12px 30px rgba(23, 34, 56, .10);
    --eb-sh-lg: 0 24px 50px rgba(23, 34, 56, .16);
    --eb-sh-nav:0 10px 40px rgba(23, 34, 56, .12);

    /* --- Mozgás --- */
    --eb-ease: .28s cubic-bezier(.4, 0, .2, 1);
    --eb-ease-slow: .5s cubic-bezier(.2, .6, .2, 1);

    /* --- Rétegek --- */
    --eb-z-header: 100;
    --eb-z-drawer: 200;
    --eb-z-top:    300;
  }
}

/* ============================================================
   2) RESET
   ============================================================ */
@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; }
  body { margin: 0; }
  h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; }
  ul[class], ol[class] { margin: 0; padding: 0; list-style: none; }
  img, picture, svg, video { display: block; max-width: 100%; }
  img { height: auto; }
  input, button, textarea, select { font: inherit; color: inherit; }
  button { cursor: pointer; background: none; border: 0; }
  a { color: inherit; text-decoration: none; }
  table { border-collapse: collapse; width: 100%; }
  :where(:focus-visible) { outline: 2px solid var(--eb-primary); outline-offset: 2px; }
  @media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  }
}

/* ============================================================
   3) ALAP / TIPOGRÁFIA
   ============================================================ */
@layer base {
  body {
    font-family: var(--eb-font-body);
    font-size: var(--eb-fs-body);
    line-height: var(--eb-lh-body);
    color: var(--eb-body);
    background: var(--eb-canvas);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
  }
  h1, h2, h3, h4, h5, h6 {
    font-family: var(--eb-font-head);
    line-height: var(--eb-lh-head);
    color: var(--eb-ink);
    font-weight: 800;
    letter-spacing: -.01em;
    text-wrap: balance;
  }
  h1 { font-size: var(--eb-fs-h1); }
  h2 { font-size: var(--eb-fs-h2); }
  h3 { font-size: var(--eb-fs-h3); }
  h4 { font-size: var(--eb-fs-h4); }
  p  { text-wrap: pretty; }
  p a, .eb-prose a { color: var(--eb-primary); text-decoration: underline; text-underline-offset: .15em; }
  p a:hover { color: var(--eb-primary-700); }
  strong, b { font-weight: 700; color: var(--eb-ink); }
  ::selection { background: var(--eb-primary-tint); color: var(--eb-navy); }
}

/* ============================================================
   4) ELRENDEZÉS — konténer, szekció-ritmus, rács
   ============================================================ */
@layer layout {
  .eb-container {
    width: 100%;
    max-width: var(--eb-container);
    margin-inline: auto;
    padding-inline: var(--eb-gutter);
  }
  .eb-container--wide { max-width: var(--eb-container-wide); }

  .eb-section { padding-block: var(--eb-section); }
  .eb-section--tight { padding-block: clamp(2rem, 1.5rem + 2vw, 3.5rem); }

  /* Szekció-fejléc (eyebrow + cím + animált aláhúzás) */
  .eb-head { margin-bottom: var(--eb-sp-6); }
  .eb-head--center { text-align: center; }
  .eb-head__eyebrow {
    display: inline-block;
    font-family: var(--eb-font-head);
    font-size: var(--eb-fs-eyebrow);
    font-weight: 700;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--eb-primary);
    margin-bottom: var(--eb-sp-2);
  }
  .eb-head__title { position: relative; }
  .eb-head__title::after {
    content: "";
    display: block;
    width: 64px; height: 4px;
    margin-top: var(--eb-sp-3);
    border-radius: var(--eb-pill);
    background: linear-gradient(90deg, var(--eb-primary), var(--eb-primary-600));
  }
  .eb-head--center .eb-head__title::after { margin-inline: auto; }
  .eb-head__lead { margin-top: var(--eb-sp-3); max-width: 60ch; color: var(--eb-body); font-size: var(--eb-fs-lead); }
  .eb-head--center .eb-head__lead { margin-inline: auto; }

  /* Reszponzív auto-rács alap */
  .eb-grid { display: grid; gap: var(--eb-sp-5); }
  .eb-grid--3 { grid-template-columns: repeat(3, 1fr); }
  .eb-grid--2 { grid-template-columns: repeat(2, 1fr); }
  .eb-grid--auto { grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); }
}

/* ============================================================
   5) KOMPONENS-PRIMITÍVEK — gombok, kártya, jelvények
   ============================================================ */
@layer components {
  /* --- Gombrendszer --- */
  .eb-btn {
    display: inline-flex; align-items: center; justify-content: center; gap: var(--eb-sp-2);
    font-family: var(--eb-font-head); font-weight: 700; font-size: var(--eb-fs-sm);
    line-height: 1; text-align: center; white-space: nowrap;
    padding: .85em 1.4em; border-radius: var(--eb-pill);
    border: 1.5px solid transparent;
    transition: transform var(--eb-ease), box-shadow var(--eb-ease), background var(--eb-ease), color var(--eb-ease), border-color var(--eb-ease);
  }
  .eb-btn svg { width: 1.1em; height: 1.1em; fill: currentColor; flex: 0 0 auto; transition: transform var(--eb-ease); }
  .eb-btn:hover { transform: translateY(-2px); }
  .eb-btn:active { transform: translateY(0); }

  .eb-btn--primary { background: var(--eb-primary); color: var(--eb-white); box-shadow: 0 6px 16px var(--eb-primary-tint); }
  .eb-btn--primary:hover { background: var(--eb-navy); box-shadow: 0 12px 24px rgba(42,113,160,.28); }

  .eb-btn--ghost { background: transparent; color: var(--eb-primary); border-color: var(--eb-primary); }
  .eb-btn--ghost:hover { background: var(--eb-primary); color: var(--eb-white); }

  .eb-btn--light { background: var(--eb-white); color: var(--eb-primary); }
  .eb-btn--light:hover { background: var(--eb-ink); color: var(--eb-white); }

  .eb-btn--lg { font-size: var(--eb-fs-body); padding: 1em 1.7em; }

  /* --- Kártya --- */
  .eb-card {
    background: var(--eb-surface);
    border: 1px solid var(--eb-line);
    border-radius: var(--eb-r-lg);
    transition: transform var(--eb-ease), box-shadow var(--eb-ease), border-color var(--eb-ease);
  }
  .eb-card--hover:hover { transform: translateY(-6px); box-shadow: var(--eb-sh); border-color: var(--eb-primary-100); }

  /* --- Scroll-reveal (fail-safe: csak akkor rejt, ha a JS elindította) --- */
  .eb-reveal-ready [data-eb-reveal] {
    opacity: 0; transform: translateY(22px);
    transition: opacity .7s cubic-bezier(.2,.6,.2,1), transform .7s cubic-bezier(.2,.6,.2,1);
    will-change: opacity, transform;
  }
  .eb-reveal-ready [data-eb-reveal].is-in { opacity: 1; transform: none; }
}

/* ============================================================
   6) UTILITIES
   ============================================================ */
@layer utilities {
  .eb-sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
  }
  .eb-center { text-align: center; }
  .eb-mt-4 { margin-top: var(--eb-sp-4); }
  .eb-mt-6 { margin-top: var(--eb-sp-6); }
  [hidden] { display: none !important; }
}

/* ============================================================
   7) RESPONSIVE — alap töréspontok a rácsokhoz
   ============================================================ */
@layer responsive {
  @media (max-width: 1024px) {
    .eb-grid--3 { grid-template-columns: repeat(2, 1fr); }
  }
  @media (max-width: 640px) {
    .eb-grid--3, .eb-grid--2 { grid-template-columns: 1fr; }
  }
}