/* ==========================================================================
   Mustang Truss — Global Styles
   Design tokens, reset, typography, header, footer, shared utilities
   ========================================================================== */

/* ── Design Tokens ─────────────────────────────────────────────────────────── */
:root {
  --color-bg:           #1a1a1a;
  --color-bg-alt:       #2a2a2a;
  --color-bg-dark:      #111111;
  --color-accent:       #cc0000;
  --color-accent-hover: #aa0000;
  --color-text:         #ffffff;
  --color-text-muted:   #cccccc;
  --color-border:       rgba(255, 255, 255, 0.12);
  --color-overlay:      rgba(0, 0, 0, 0.55);

  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-base: 16px;

  --max-width: 1280px;
  --gutter:    clamp(1rem, 4vw, 2.5rem);

  --radius-sm: 4px;
  --radius:    8px;

  --transition: 0.2s ease;
  --shadow:     0 4px 24px rgba(0, 0, 0, 0.4);
}

/* ── Reset ──────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }
a   { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ── Shared Layout Helpers ──────────────────────────────────────────────────── */
.mt-container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.mt-label {
  display: inline-block;
  background-color: var(--color-accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.35em 0.85em;
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
}

.mt-content { line-height: 1.7; }
.mt-content p + p { margin-top: 1em; }

/* ── Buttons ─────────────────────────────────────────────────────────────────── */
.mt-btn {
  display: inline-block;
  font-family: var(--font-family);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.65em 1.6em;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition), color var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.mt-btn--accent {
  background-color: var(--color-accent);
  color: #fff;
  border: 2px solid var(--color-accent);
}
.mt-btn--accent:hover { background-color: var(--color-accent-hover); border-color: var(--color-accent-hover); }

.mt-btn--outline {
  background-color: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.7);
}
.mt-btn--outline:hover { background-color: rgba(255,255,255,0.1); border-color: #fff; }

.mt-btn--outline-dark {
  background-color: transparent;
  color: var(--color-text);
  border: 2px solid var(--color-text-muted);
}
.mt-btn--outline-dark:hover { background-color: rgba(255,255,255,0.08); }

.mt-btn--sm {
  background-color: #555;
  color: #fff;
  border: 2px solid #555;
  font-size: 0.8rem;
  padding: 0.5em 1.2em;
}
.mt-btn--sm:hover { background-color: #444; border-color: #444; }

/* ── Header ──────────────────────────────────────────────────────────────────── */
.mt-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-bg-dark);
  border-bottom: 1px solid var(--color-border);
}

.mt-header__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  max-width: var(--max-width);
  margin-inline: auto;
  padding: 0.75rem var(--gutter);
}

/* Logo */
.mt-header__logo { flex-shrink: 0; }
.mt-header__logo img,
.mt-header__logo .custom-logo { height: 56px; width: auto; }
.mt-header__site-name { font-size: 1.25rem; font-weight: 700; color: #fff; }

/* Nav */
.mt-nav { flex: 1; }
.mt-nav__list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.mt-nav__list li a {
  display: block;
  padding: 0.4em 0.9em;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--transition);
  position: relative;
}

.mt-nav__list li a:hover,
.mt-nav__list li.current-menu-item a {
  color: #fff;
}

.mt-nav__list li.current-menu-item a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0.9em;
  right: 0.9em;
  height: 2px;
  background-color: var(--color-accent);
  border-radius: 2px;
}

/* Contact info in header */
.mt-header__contact {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.1rem;
  flex-shrink: 0;
  text-align: right;
}

.mt-header__address { font-size: 0.72rem; color: var(--color-text-muted); line-height: 1.4; }
.mt-header__phone   { font-size: 0.8rem; font-weight: 600; color: #fff; }
.mt-header__email   { font-size: 0.72rem; color: var(--color-text-muted); }
.mt-header__phone:hover,
.mt-header__email:hover { color: var(--color-accent); }

/* Hamburger toggle (hidden on desktop) */
.mt-nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  flex-shrink: 0;
}
.mt-nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.mt-nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mt-nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.mt-nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Footer ──────────────────────────────────────────────────────────────────── */
.mt-footer {
  background-color: var(--color-bg-dark);
  border-top: 1px solid var(--color-border);
  padding-top: 3rem;
}

.mt-footer__inner {
  display: flex;
  gap: 3rem;
  max-width: var(--max-width);
  margin-inline: auto;
  padding: 0 var(--gutter) 3rem;
}

.mt-footer__brand {
  flex: 0 0 280px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.mt-footer__logo img,
.mt-footer__logo .custom-logo { height: 60px; width: auto; filter: brightness(0) invert(1); }
.mt-footer__logo-text { font-size: 1.2rem; font-weight: 700; }

.mt-footer__building-photo {
  width: 100%;
  max-width: 280px;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

.mt-footer__social-bar {
  height: 6px;
  background-color: var(--color-accent);
  border-radius: 3px;
}

.mt-footer__info {
  flex: 1;
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
}

.mt-footer__section { min-width: 140px; }

.mt-footer__heading {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #fff;
  margin-bottom: 0.75rem;
}

.mt-footer__section p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.mt-footer__section a {
  color: var(--color-text-muted);
  transition: color var(--transition);
}
.mt-footer__section a:hover { color: var(--color-accent); }

.mt-footer__social {
  display: flex;
  gap: 0.75rem;
}

.mt-footer__social a {
  color: var(--color-text-muted);
  transition: color var(--transition);
}
.mt-footer__social a:hover { color: #fff; }

.mt-footer__accent-bar {
  height: 6px;
  background-color: var(--color-accent);
}

/* ── PDF Download Link ───────────────────────────────────────────────────────── */
.mt-pdf-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1.25rem;
  padding: 0.75rem 1rem;
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  transition: border-color var(--transition), color var(--transition);
}
.mt-pdf-link:hover { border-color: var(--color-accent); color: #fff; }
.mt-pdf-link__icon { font-size: 1.5rem; }
.mt-pdf-link strong { color: #fff; }

.mt-pdf-placeholder {
  margin-top: 1rem;
  font-size: 0.8rem;
  color: #888;
  font-style: italic;
}

/* ── Responsive ──────────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .mt-header__contact { display: none; }
}

@media (max-width: 768px) {
  .mt-nav__toggle { display: flex; }

  .mt-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-bg-dark);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem var(--gutter);
  }

  .mt-nav.is-open { display: block; }

  .mt-nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
  }

  .mt-nav__list li a { padding: 0.75em 0; font-size: 1rem; }

  .mt-header {
    position: relative; /* allow dropdown to flow */
  }

  .mt-footer__inner { flex-direction: column; }
  .mt-footer__brand { flex: none; }
  .mt-footer__info  { flex-direction: column; gap: 1.5rem; }
}