/* =============================================
   Ullal Park — Design System
   Industrial construction aesthetic
   ============================================= */

:root {
  --color-red: #C41E3A;
  --color-red-dark: #9B1830;
  --color-red-light: #E8354F;
  --color-charcoal: #141418;
  --color-charcoal-soft: #1E1E24;
  --color-steel: #2A3444;
  --color-concrete: #F2F0ED;
  --color-concrete-dark: #E0DDD8;
  --color-white: #FFFFFF;
  --color-text: #2C2C34;
  --color-text-muted: #6B6B78;
  --color-border: rgba(20, 20, 24, 0.08);

  --font-display: 'Archivo', system-ui, sans-serif;
  --font-body: 'Source Sans 3', system-ui, sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --shadow-sm: 0 2px 8px rgba(20, 20, 24, 0.06);
  --shadow-md: 0 8px 32px rgba(20, 20, 24, 0.1);
  --shadow-lg: 0 16px 48px rgba(20, 20, 24, 0.14);

  --header-height: 72px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1rem);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
address { font-style: normal; }

.container {
  width: min(1140px, 92vw);
  margin-inline: auto;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-sm);
  z-index: 9999;
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-red);
  color: var(--color-white);
  border-radius: var(--radius-sm);
  font-weight: 600;
}
.skip-link:focus { top: var(--space-sm); }

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}
.header--scrolled { box-shadow: var(--shadow-sm); }

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.logo__img {
  display: block;
  height: 46px;
  width: auto;
  max-width: min(240px, 52vw);
  object-fit: contain;
}

/* Navigation */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-charcoal);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.nav__link {
  padding: 0.5rem 1rem;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}
.nav__link:hover,
.nav__link:focus-visible {
  color: var(--color-red);
  background: rgba(196, 30, 58, 0.06);
}
.nav__link--cta {
  background: var(--color-red);
  color: var(--color-white) !important;
  margin-left: 0.5rem;
}
.nav__link--cta:hover,
.nav__link--cta:focus-visible {
  background: var(--color-red-dark);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__tracks {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      -35deg,
      transparent,
      transparent 40px,
      rgba(196, 30, 58, 0.03) 40px,
      rgba(196, 30, 58, 0.03) 42px
    ),
    repeating-linear-gradient(
      -35deg,
      transparent,
      transparent 80px,
      rgba(42, 52, 68, 0.04) 80px,
      rgba(42, 52, 68, 0.04) 83px
    );
}

.hero__gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(196, 30, 58, 0.08) 0%, transparent 60%),
    linear-gradient(180deg, var(--color-concrete) 0%, var(--color-white) 100%);
}

.hero__content {
  position: relative;
  z-index: 1;
  padding-block: var(--space-2xl) var(--space-xl);
}

.hero__eyebrow {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-red);
  margin-bottom: var(--space-md);
  padding: 0.4rem 1rem;
  background: rgba(196, 30, 58, 0.08);
  border-radius: 100px;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--color-charcoal);
  max-width: 14ch;
  margin-bottom: var(--space-md);
}

.text-accent { color: var(--color-red); }

.hero__desc {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 52ch;
  margin-bottom: var(--space-lg);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.75rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform 0.15s;
}
.btn:active { transform: scale(0.98); }
.btn--primary {
  background: var(--color-red);
  color: var(--color-white);
}
.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--color-red-dark);
}
.btn--ghost {
  background: transparent;
  color: var(--color-charcoal);
  border-color: var(--color-concrete-dark);
}
.btn--ghost:hover,
.btn--ghost:focus-visible {
  border-color: var(--color-red);
  color: var(--color-red);
}
.btn--full { width: 100%; }

/* Hero stats */
.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}
.hero__stat dt {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-charcoal);
  letter-spacing: -0.02em;
}
.hero__stat dd {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 0.15rem;
}

/* Sections */
.section {
  padding-block: var(--space-2xl);
}
.section__header {
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: var(--space-xl);
}
.section__header--light .section__title,
.section__header--light .section__desc { color: var(--color-white); }
.section__header--light .section__eyebrow { color: var(--color-red-light); }
.section__header--light .section__desc { color: rgba(255,255,255,0.7); }

.section__eyebrow {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-red);
  margin-bottom: var(--space-sm);
}
.section__title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-charcoal);
  margin-bottom: var(--space-sm);
}
.section__desc {
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

/* Services */
.services { background: var(--color-white); }

.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-md);
}

.service-card {
  padding: var(--space-lg);
  background: var(--color-concrete);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(196, 30, 58, 0.15);
}

.service-card__icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-red);
  color: var(--color-white);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-md);
}
.service-card__icon svg { width: 28px; height: 28px; }

.service-card__title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-charcoal);
  margin-bottom: var(--space-xs);
}
.service-card__text {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: var(--space-sm);
}
.service-card__list li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.875rem;
  color: var(--color-text);
  margin-bottom: 0.35rem;
}
.service-card__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  background: var(--color-red);
  border-radius: 50%;
}

/* About */
.about { background: var(--color-concrete); }

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: var(--space-xl);
  align-items: center;
}

.about__visual { position: relative; }

.about__image {
  aspect-ratio: 4/3;
  background:
    linear-gradient(135deg, var(--color-steel) 0%, var(--color-charcoal) 100%);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}
.about__image--logo {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: var(--space-lg);
}
.about__image--logo::before { display: none; }
.about__logo {
  width: min(280px, 70%);
  height: auto;
  object-fit: contain;
}

.about__badge {
  position: absolute;
  bottom: var(--space-md);
  left: var(--space-md);
  background: var(--color-red);
  color: var(--color-white);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
}
.about__badge-year {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
}
.about__badge-text {
  font-size: 0.8rem;
  opacity: 0.9;
}

.about__content p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}
.about__content p strong { color: var(--color-charcoal); }

.about__values {
  margin-top: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}
.about__values li {
  padding: var(--space-sm) var(--space-md);
  background: var(--color-white);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-red);
}
.about__values strong {
  display: block;
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--color-charcoal);
  margin-bottom: 0.15rem;
}
.about__values span {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Experience */
.experience {
  background: var(--color-charcoal);
  color: var(--color-white);
}

.experience__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.experience-card {
  padding: var(--space-lg);
  background: var(--color-charcoal-soft);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-md);
  transition: border-color var(--transition);
}
.experience-card:hover {
  border-color: rgba(196, 30, 58, 0.4);
}

.experience-card__tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-red-light);
  margin-bottom: var(--space-sm);
}
.experience-card__title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}
.experience-card p {
  font-size: 0.925rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.6;
}

.trust-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-lg);
  padding: var(--space-lg);
  background: rgba(255,255,255,0.04);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,0.06);
}
.trust-bar__item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.7);
}
.trust-bar__item svg {
  width: 20px;
  height: 20px;
  color: var(--color-red-light);
  flex-shrink: 0;
}

/* Contact */
.contact { background: var(--color-white); }

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.contact__desc {
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

.contact__details {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.contact__item {
  display: flex;
  gap: var(--space-sm);
  align-items: flex-start;
}
.contact__item svg {
  width: 22px;
  height: 22px;
  color: var(--color-red);
  flex-shrink: 0;
  margin-top: 2px;
}
.contact__item strong {
  display: block;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-charcoal);
  margin-bottom: 0.15rem;
}
.contact__item a {
  color: var(--color-red);
  transition: color var(--transition);
}
.contact__item a:hover { color: var(--color-red-dark); }
.contact__item span { color: var(--color-text-muted); font-size: 0.95rem; }

/* Form */
.contact__form {
  padding: var(--space-lg);
  background: var(--color-concrete);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.form-group {
  margin-bottom: var(--space-sm);
}
.form-group label {
  display: block;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-charcoal);
  margin-bottom: 0.35rem;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-white);
  border: 1px solid var(--color-concrete-dark);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-red);
  box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.12);
}
.form-group textarea { resize: vertical; min-height: 100px; }

.form-note {
  margin-top: var(--space-sm);
  font-size: 0.875rem;
  text-align: center;
  min-height: 1.25rem;
}
.form-note--success { color: #1B7A3D; }
.form-note--error { color: var(--color-red); }

/* Footer */
.footer {
  background: var(--color-charcoal);
  color: rgba(255,255,255,0.6);
  padding-block: var(--space-lg);
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.footer__logo {
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}
.footer__brand strong {
  display: block;
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--color-white);
}
.footer__brand span {
  font-size: 0.75rem;
}

.footer__nav {
  display: flex;
  gap: var(--space-md);
}
.footer__nav a {
  font-size: 0.85rem;
  transition: color var(--transition);
}
.footer__nav a:hover { color: var(--color-white); }

.footer__copy {
  width: 100%;
  text-align: center;
  font-size: 0.8rem;
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255,255,255,0.06);
}

/* Scroll reveal */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Focus visible */
:focus-visible {
  outline: 2px solid var(--color-red);
  outline-offset: 2px;
}

/* Responsive */
@media (max-width: 900px) {
  .about__grid,
  .contact__grid {
    grid-template-columns: 1fr;
  }
  .about__visual { order: -1; }
}

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

  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-sm);
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition), opacity var(--transition);
  }
  .nav--open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav__list {
    flex-direction: column;
    align-items: stretch;
  }
  .nav__link {
    display: block;
    padding: 0.85rem 1rem;
    text-align: center;
  }
  .nav__link--cta { margin-left: 0; margin-top: 0.25rem; }

  .hero__stats { gap: var(--space-md); }
  .hero__stat dt { font-size: 1.5rem; }

  .footer__inner { flex-direction: column; text-align: center; }
  .footer__brand { flex-direction: column; }
}