/* ============================================
   Delta General Trading — landing page styles
   ============================================ */

:root {
  --blue-deep:  #0E3A6B;
  --blue-mid:   #1E5AA6;
  --blue-soft:  #4A8AC8;
  --blue-light: #A8C8E8;
  --blue-bg:    #EAF2FB;
  --blue-tint:  #F4F9FF;
  --ink:        #0A0A0A;
  --ink-soft:   #1F2937;
  --paper:      #FFFFFF;
  --muted:      #5A6B7E;
  --line:       #DCE6F2;

  --shadow-sm: 0 1px 2px rgba(14, 58, 107, .06), 0 1px 3px rgba(14, 58, 107, .08);
  --shadow-md: 0 4px 12px rgba(14, 58, 107, .08), 0 10px 30px rgba(14, 58, 107, .08);
  --shadow-lg: 0 10px 30px rgba(14, 58, 107, .12), 0 20px 60px rgba(14, 58, 107, .12);

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;

  --container: 1180px;
  --header-h: 76px;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-soft);
  background: var(--paper);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--blue-mid); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--blue-deep); }

h1, h2, h3 {
  font-family: 'Poppins', 'Inter', sans-serif;
  color: var(--blue-deep);
  letter-spacing: -.01em;
  margin: 0 0 .5em;
  line-height: 1.15;
}

h1 { font-size: clamp(2.2rem, 5.2vw, 3.6rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 3.6vw, 2.4rem); font-weight: 700; }
h3 { font-size: 1.1rem; font-weight: 700; }

p { margin: 0 0 1em; }

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 20px;
}

.eyebrow {
  text-transform: uppercase;
  font-size: .8rem;
  letter-spacing: .14em;
  font-weight: 600;
  color: var(--blue-mid);
  margin: 0 0 .6em;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--blue-deep);
  color: #fff;
  padding: 8px 12px;
  border-radius: 6px;
  z-index: 1000;
  transform: translateY(calc(-100% - 16px));
  transition: transform .15s ease;
}
.skip-link:focus { transform: none; }

/* ============================================
   Header
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .85);
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .25s ease, border-color .25s ease, background .25s ease;
}
.site-header.is-scrolled {
  background: rgba(255, 255, 255, .95);
  border-bottom-color: var(--line);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
  gap: 16px;
}
.brand img { height: 48px; width: auto; }

.nav-toggle {
  appearance: none;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 10px;
  width: 44px;
  height: 44px;
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  padding: 0;
}
.nav-toggle-bar {
  width: 22px;
  height: 2px;
  background: var(--blue-deep);
  border-radius: 2px;
  transition: transform .25s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.primary-nav {
  position: absolute;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, .98);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow-md);
  transform: translateY(-8px);
  opacity: 0;
  visibility: hidden;
  transition: transform .2s ease, opacity .2s ease, visibility 0s linear .2s;
}
.primary-nav.is-open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
  transition: transform .2s ease, opacity .2s ease, visibility 0s linear 0s;
}
.primary-nav ul {
  list-style: none;
  margin: 0;
  padding: 12px 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.primary-nav a {
  display: block;
  padding: 12px 8px;
  color: var(--blue-deep);
  font-weight: 600;
  border-radius: 8px;
}
.primary-nav a:hover { background: var(--blue-bg); }
.primary-nav .nav-cta {
  background: var(--blue-deep);
  color: #fff;
  text-align: center;
  margin-top: 6px;
}
.primary-nav .nav-cta:hover { background: var(--blue-mid); color: #fff; }

@media (min-width: 820px) {
  .nav-toggle { display: none; }
  .primary-nav {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    background: transparent;
    border: none;
    box-shadow: none;
    backdrop-filter: none;
  }
  .primary-nav ul {
    flex-direction: row;
    align-items: center;
    padding: 0;
    gap: 8px;
  }
  .primary-nav a { padding: 10px 14px; }
  .primary-nav .nav-cta { margin-top: 0; padding: 10px 18px; border-radius: 999px; }
}

/* ============================================
   Hero
   ============================================ */
.hero {
  position: relative;
  isolation: isolate;
  min-height: calc(100svh - var(--header-h));
  display: flex;
  align-items: center;
  padding: 60px 0 80px;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(168, 200, 232, .55), transparent 60%),
    radial-gradient(900px 500px at -10% 110%, rgba(74, 138, 200, .25), transparent 60%),
    linear-gradient(180deg, var(--blue-bg) 0%, var(--blue-tint) 60%, #fff 100%);
  overflow: hidden;
}
.hero-stripes {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}
.hero-stripes::before,
.hero-stripes::after {
  content: '';
  position: absolute;
  width: 180vw;
  height: 90px;
  left: -40vw;
  transform: rotate(-8deg);
}
.hero-stripes::before {
  top: 14%;
  background: repeating-linear-gradient(
    90deg,
    var(--blue-deep) 0 32px,
    transparent 32px 64px,
    var(--ink) 64px 96px,
    transparent 96px 128px
  );
  opacity: .07;
}
.hero-stripes::after {
  bottom: 12%;
  background: repeating-linear-gradient(
    90deg,
    var(--blue-mid) 0 28px,
    transparent 28px 56px,
    var(--ink) 56px 84px,
    transparent 84px 112px
  );
  opacity: .06;
}

.hero-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.hero-logo {
  width: min(420px, 78%);
  height: auto;
  margin-bottom: 18px;
  filter: drop-shadow(0 12px 30px rgba(14, 58, 107, .18));
}
.hero h1 { margin-bottom: .35em; }
.hero-suffix { color: var(--blue-mid); font-weight: 700; }
.hero-tagline {
  max-width: 640px;
  font-size: clamp(1rem, 1.6vw, 1.18rem);
  color: var(--muted);
  margin-bottom: 1.8em;
}
.hero-ctas {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: .01em;
  border: 1.5px solid transparent;
  transition: transform .15s ease, box-shadow .25s ease, background .2s ease, color .2s ease, border-color .2s ease;
  min-height: 44px;
  cursor: pointer;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--blue-deep);
  color: #fff;
  box-shadow: 0 8px 20px rgba(14, 58, 107, .25);
}
.btn-primary:hover { background: var(--blue-mid); color: #fff; box-shadow: 0 12px 28px rgba(14, 58, 107, .3); }
.btn-ghost {
  background: rgba(255, 255, 255, .8);
  color: var(--blue-deep);
  border-color: var(--blue-deep);
}
.btn-ghost:hover { background: var(--blue-deep); color: #fff; }

/* ============================================
   About
   ============================================ */
.about {
  position: relative;
  padding: 90px 0;
  background: #fff;
}
.about-inner {
  display: grid;
  gap: 40px;
  align-items: center;
}
.about-text h2 { max-width: 18ch; }
.about-text p { color: var(--muted); font-size: 1.05rem; max-width: 60ch; }

.pills {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.pills li {
  background: var(--blue-bg);
  color: var(--blue-deep);
  padding: 8px 16px;
  border-radius: 999px;
  font-size: .92rem;
  font-weight: 600;
  border: 1px solid var(--blue-light);
}

.about-accent {
  display: none;
}
.accent-card {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(160deg, var(--blue-deep) 0%, var(--blue-mid) 70%, var(--blue-soft) 100%);
  box-shadow: var(--shadow-lg);
  isolation: isolate;
}
.accent-stripes {
  position: absolute;
  inset: -20%;
  background:
    repeating-linear-gradient(
      45deg,
      rgba(255, 255, 255, .08) 0 18px,
      transparent 18px 36px,
      rgba(0, 0, 0, .25) 36px 54px,
      transparent 54px 90px
    );
  z-index: 0;
}
.accent-mark {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: 'Poppins', sans-serif;
  font-weight: 800;
  font-size: clamp(2.4rem, 6vw, 4.4rem);
  letter-spacing: .12em;
  color: rgba(255, 255, 255, .92);
  text-shadow: 0 6px 30px rgba(0, 0, 0, .35);
  z-index: 1;
}

@media (min-width: 900px) {
  .about-inner {
    grid-template-columns: 1.25fr 1fr;
    gap: 80px;
  }
  .about-accent { display: block; }
}

/* ============================================
   Contact
   ============================================ */
.contact {
  position: relative;
  padding: 90px 0 100px;
  background:
    linear-gradient(180deg, #fff 0%, var(--blue-bg) 25%, var(--blue-bg) 100%);
  overflow: hidden;
}
.contact::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 8px;
  background:
    repeating-linear-gradient(
      90deg,
      var(--blue-deep) 0 60px,
      var(--ink) 60px 90px,
      var(--blue-mid) 90px 150px,
      var(--ink) 150px 180px
    );
  opacity: .85;
}

.contact-head {
  text-align: center;
  margin-bottom: 48px;
}
.contact-head h2 { margin-bottom: .35em; }
.contact-sub { color: var(--muted); max-width: 52ch; margin-inline: auto; }

.contact-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr;
}

.contact-card {
  display: block;
  background: #fff;
  border-radius: var(--radius-md);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--line);
  color: inherit;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
a.contact-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--blue-light);
  color: inherit;
}
.contact-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--blue-bg);
  color: var(--blue-deep);
  display: grid;
  place-items: center;
  margin-bottom: 14px;
}
.contact-card h3 { color: var(--blue-deep); margin-bottom: 6px; }
.contact-card p { margin: 0; color: var(--muted); font-size: 1rem; line-height: 1.55; }
.contact-card a { color: var(--blue-deep); font-weight: 600; }
.contact-card a:hover { color: var(--blue-mid); text-decoration: underline; }

@media (min-width: 720px) {
  .contact-grid { grid-template-columns: repeat(3, 1fr); gap: 22px; }
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
  position: relative;
  background: var(--blue-deep);
  color: #cfdcef;
  padding: 60px 0 36px;
}
.footer-stripes {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background:
    repeating-linear-gradient(
      90deg,
      var(--ink) 0 40px,
      var(--blue-mid) 40px 80px,
      var(--ink) 80px 120px,
      var(--blue-soft) 120px 160px
    );
}
.footer-inner {
  display: grid;
  gap: 28px;
  grid-template-columns: 1fr;
}
.footer-wordmark {
  font-family: 'Poppins', 'Inter', sans-serif;
  font-weight: 800;
  font-size: 2.2rem;
  line-height: 1;
  color: #fff;
  letter-spacing: .02em;
  margin: 0 0 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.footer-wordmark-sub {
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .28em;
  color: var(--blue-light);
}
.footer-blurb { color: #b8c8de; max-width: 38ch; }
.footer-meta p { margin: 0 0 .5em; color: #cfdcef; font-size: .95rem; }
.footer-meta a { color: #fff; }
.footer-meta a:hover { color: var(--blue-light); }
.copyright { margin-top: 18px !important; color: #93a8c4 !important; font-size: .85rem; }

@media (min-width: 760px) {
  .footer-inner { grid-template-columns: 1.2fr 1fr; align-items: start; }
}

/* ============================================
   Scroll-reveal animation
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.is-visible { opacity: 1; transform: none; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}

/* Focus visibility */
:focus-visible {
  outline: 3px solid var(--blue-mid);
  outline-offset: 2px;
  border-radius: 4px;
}