/*
  Large-screen fluid scale – shared across all pages.
  Complements mockup-1.css and page inline styles.
  Pattern: fluid type + content-max container (MDN fluid typography / container queries).
*/

:root {
  --content-max: 1280px;
  --nav-bar-height: 72px;
  --nav-link-size: 11px;
  --btn-font-size: 10px;
  --btn-pad-y: 15px;
  --btn-pad-x: 30px;
}

/* Laptop / large desktop */
@media (min-width: 1440px) {
  :root {
    --content-max: 1360px;
    --layout-page-edge: clamp(40px, 2.5vw, 72px);
    --layout-nav-inset: clamp(36px, 1.8vw, 52px);
    --hero-copy-inset: clamp(48px, 2.8vw, 68px);
    --body-font-size: clamp(18px, 0.4vw + 14px, 20px);
    --section-headline-size: clamp(26px, 1.2vw + 16px, 50px);
    --section-headline-size-sm: clamp(22px, 1vw + 14px, 44px);
    --section-sub-font-size: clamp(12px, 0.3vw + 10px, 14px);
    --nav-bar-height: clamp(72px, 4vw, 80px);
    --nav-link-size: clamp(11px, 0.25vw + 9px, 12px);
    --btn-font-size: clamp(10px, 0.2vw + 8px, 11px);
    --btn-pad-y: clamp(15px, 0.6vw + 12px, 18px);
    --btn-pad-x: clamp(30px, 1.2vw + 22px, 36px);
  }
}

/* Full HD+ */
@media (min-width: 1920px) {
  :root {
    --content-max: 1440px;
    --layout-page-edge: clamp(48px, 3vw, 88px);
    --layout-nav-inset: clamp(40px, 2.2vw, 60px);
    --hero-copy-inset: clamp(56px, 3.2vw, 80px);
    --body-font-size: 20px;
    --section-headline-size: clamp(30px, 1.4vw + 18px, 58px);
    --section-headline-size-sm: clamp(26px, 1.2vw + 16px, 50px);
    --nav-bar-height: 80px;
    --nav-link-size: 12px;
    --btn-font-size: 11px;
    --btn-pad-y: 18px;
    --btn-pad-x: 36px;
  }
}

/* QHD / 4K */
@media (min-width: 2560px) {
  :root {
    --content-max: 1520px;
    --layout-page-edge: clamp(56px, 3.5vw, 112px);
    --layout-nav-inset: clamp(44px, 2.5vw, 72px);
    --hero-copy-inset: clamp(64px, 3.5vw, 96px);
    --section-headline-size: clamp(34px, 1.5vw + 20px, 64px);
    --section-headline-size-sm: clamp(28px, 1.3vw + 18px, 54px);
    --nav-bar-height: 84px;
    --btn-font-size: 12px;
    --btn-pad-y: 20px;
    --btn-pad-x: 40px;
  }
}

@media (min-width: 1440px) {
  /* ── Global base scale ── */
  body {
    font-size: var(--body-font-size);
  }

  .site-header {
    padding: clamp(28px, 1.5vw, 36px) clamp(48px, 2.5vw, 64px) 0 var(--layout-page-edge);
  }

  @media (min-width: 851px) {
    .site-header.header--scrolled {
      padding-right: clamp(48px, 2.5vw, 64px);
    }
  }

  .nav-bar {
    height: var(--nav-bar-height);
    padding-left: var(--layout-nav-inset);
    padding-right: clamp(44px, 2.5vw, 56px);
  }

  .site-header .logo-mark {
    height: clamp(36px, 2vw, 44px);
  }

  .site-header .logo-wordmark {
    font-size: clamp(16px, 0.5vw + 13px, 18px);
  }

  .footer-brand__icon img {
    height: 36px;
  }

  .footer-brand__wordmark {
    font-size: 16px;
  }

  .nav-links {
    gap: clamp(36px, 2.5vw, 48px);
  }

  .nav-links a {
    font-size: var(--nav-link-size);
  }

  .btn {
    font-size: var(--btn-font-size);
    padding: var(--btn-pad-y) var(--btn-pad-x);
  }

  .btn svg {
    width: clamp(13px, 0.5vw + 11px, 15px);
    height: clamp(13px, 0.5vw + 11px, 15px);
  }

  /* ── Shared content shells ── */
  .system-inner,
  .sovereign-inner,
  .sustainable-shell,
  .contact-page-hero,
  .contact-layout,
  .system-ecosystem-overview__diagram-inner {
    max-width: var(--content-max);
  }

  .system-metrics__grid {
    max-width: min(1120px, 92%);
  }

  #system-final-cta .system-final-inner {
    max-width: min(900px, 92%);
  }

  .solutions-journey {
    width: 100%;
    max-width: none;
  }

  .footer-brand-info {
    max-width: min(320px, 100%);
    font-size: clamp(13px, 0.35vw + 11px, 15px);
  }

  /* ── Homepage hero ── */
  .hero-content {
    max-width: min(1040px, 78vw);
  }

  #hero h1.hero-title {
    font-size: clamp(22px, 12px + 2.8vw, 72px);
  }

  @supports (font-size: 1cqi) {
    #hero h1.hero-title {
      font-size: clamp(22px, 8.1cqi, 72px);
    }
  }

  .hero-body {
    font-size: var(--body-font-size);
    max-width: min(640px, 90%);
  }

  .hero-btns {
    width: min(580px, 100%);
  }

  .hero-text-band {
    padding: clamp(36px, 2.5vw, 48px) clamp(56px, 3vw, 72px) clamp(40px, 2.5vw, 52px) var(--hero-copy-inset);
  }

  /* ── Ecosystem intro ── */
  .eco-copy {
    max-width: 48ch;
  }

  /* ── Large display type ── */
  .principle-left h2,
  .section-title {
    font-size: clamp(52px, 5.5vw, 140px);
  }

  .stat-val {
    font-size: clamp(36px, 4vw, 80px);
  }

  #final-cta h2 {
    font-size: clamp(32px, 3.8vw, 88px);
  }

  .final-cta-content {
    max-width: min(840px, 92%);
  }

  .why-header p:not(.eyebrow),
  .system-header__lead {
    font-size: clamp(18px, 1.1vw, 22px);
  }

  /* ── System page ── */
  .system-hero h1 {
    font-size: clamp(36px, 4vw, 80px);
    max-width: min(22ch, 100%);
  }

  .system-hero__lead {
    font-size: clamp(15px, 1.2vw, 22px);
    max-width: min(58ch, 100%);
  }

  .system-section__title {
    font-size: clamp(26px, 2.4vw, 56px);
  }

  .system-pillar__lead {
    font-size: clamp(16px, 1.2vw, 22px);
  }

  .system-section__body p {
    font-size: clamp(16px, 1vw, 20px);
  }

  .metric-card__value {
    font-size: clamp(22px, 2vw, 36px);
  }

  .system-ecosystem-overview__img {
    max-height: min(640px, 48vw);
  }

  /* ── Solutions page ── */
  .solutions-title-caps {
    font-size: clamp(40px, 3.5vw, 72px);
  }

  .solutions-introduction_title {
    font-size: clamp(28px, 2.8vw, 52px);
  }

  .solutions-lead {
    font-size: clamp(16px, 1.1vw, 22px);
  }

  #system-final-cta h2 {
    font-size: clamp(26px, 3.2vw, 64px);
  }

  /* ── Contact page ── */
  .contact-page-hero h1 {
    font-size: clamp(32px, 3.5vw, 64px);
  }

  .contact-page-hero__lead {
    font-size: clamp(16px, 1.1vw, 22px);
  }

  .contact-aside .contact-info-title {
    font-size: clamp(22px, 2vw, 32px);
  }

  .contact-aside p,
  .contact-form-wrap .field label,
  .contact-form-wrap .field input,
  .contact-form-wrap .field textarea {
    font-size: clamp(15px, 0.5vw + 13px, 18px);
  }

  .why-header h2,
  .why-header h2 .why-h2-em {
    font-size: var(--section-headline-size);
  }

  .why-header p:not(.eyebrow) {
    font-size: var(--body-font-size);
  }

  .eco-copy .eyebrow,
  .why-header .eyebrow {
    font-size: var(--eyebrow-font-size);
    letter-spacing: var(--eyebrow-letter-spacing);
  }

  .system-header h2,
  .system-header h2 .system-header__line {
    font-size: var(--section-headline-size-sm);
  }

  .eco-copy h2,
  .eco-copy h2 .eco-h2-strong {
    font-size: var(--section-headline-size);
  }

  .eco-copy p:not(.eyebrow) {
    font-size: var(--body-font-size);
  }

  .sust-glass-card__title {
    font-size: clamp(17px, 1.2vw, 22px);
  }

  .sust-glass-card__para {
    font-size: clamp(16px, 0.5vw + 14px, 18px);
  }

  .sust-glass-card__icon {
    width: clamp(52px, 3vw, 60px);
    height: clamp(52px, 3vw, 60px);
  }
}

@media (min-width: 1920px) {
  #hero h1.hero-title {
    font-size: clamp(28px, 12px + 2.4vw, 80px);
  }

  @supports (font-size: 1cqi) {
    #hero h1.hero-title {
      font-size: clamp(28px, 8.1cqi, 80px);
    }
  }

  .system-metrics__grid {
    max-width: min(1200px, 90%);
  }

  #system-final-cta .system-final-inner {
    max-width: min(960px, 88%);
  }

  .solutions-journey {
    width: 100%;
    max-width: none;
  }
}