@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@400;500;600;700&family=Source+Sans+3:ital,wght@0,300;0,400;0,600;1,300&display=swap');

:root {
  --sky-deep: #0369a1;
  --sky-mid: #0ea5e9;
  --sky-light: #7dd3fc;
  --sky-pale: #e0f2fe;
  --cloud: #f0f9ff;
  --white: #ffffff;
  --text-dark: #0c2840;
  --text-mid: #1e4b6e;
  --text-light: #4a89b0;
  --green-land: #166534;
  --green-light: #86efac;
  --danger-orange: #ea580c;
}

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

body {
  font-family: 'Source Sans 3', sans-serif;
  background: linear-gradient(180deg, #0369a1 0%, #0ea5e9 25%, #7dd3fc 55%, #bae6fd 78%, #e0f2fe 100%);
  min-height: 100vh;
  color: var(--text-dark);
  overflow-x: hidden;
}

/* Clouds background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(ellipse 320px 100px at 10% 30%, rgba(255,255,255,0.55) 0%, transparent 70%),
    radial-gradient(ellipse 240px 80px at 85% 18%, rgba(255,255,255,0.5) 0%, transparent 70%),
    radial-gradient(ellipse 200px 65px at 50% 42%, rgba(255,255,255,0.35) 0%, transparent 70%),
    radial-gradient(ellipse 160px 55px at 30% 58%, rgba(255,255,255,0.3) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.wrap {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px 80px;
  position: relative;
  z-index: 1;
}

/* ── HERO ── */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 50px 20px 30px;
  text-align: center;
}

.parachute-svg-wrap {
  width: 180px;
  height: 200px;
  margin-bottom: 24px;
  animation: descend 4s ease-in-out infinite;
  filter: drop-shadow(0 12px 24px rgba(3,105,161,0.3));
}

@keyframes descend {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  25%       { transform: translateY(-8px) rotate(-1.5deg); }
  75%       { transform: translateY(4px) rotate(1deg); }
}

.hero h1 {
  font-family: 'Oswald', sans-serif;
  font-size: clamp(2.6rem, 6vw, 4.2rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--white);
  text-shadow: 0 2px 16px rgba(3,105,161,0.6), 0 0 40px rgba(255,255,255,0.3);
}

.hero .tagline {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.85);
  letter-spacing: 0.05em;
  margin-top: 8px;
  font-style: italic;
}

/* ── ALTITUDE BAND ── */
.alt-band {
  position: relative;
  background: rgba(255,255,255,0.2);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.45);
  border-radius: 14px;
  padding: 20px 24px;
  margin-bottom: 20px;
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 12px;
}

.alt-stat { text-align: center; }

.alt-num {
  font-family: 'Oswald', sans-serif;
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--white);
  display: block;
}

.alt-lbl {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.75);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ── CARD GRID ── */
.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 640px) { .grid { grid-template-columns: 1fr; } }

.card {
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 16px;
  padding: 24px;
  border: 1px solid rgba(255,255,255,0.7);
  box-shadow: 0 8px 28px rgba(3,105,161,0.12);
  transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 16px 36px rgba(3,105,161,0.2);
}

.card h2 {
  font-family: 'Oswald', sans-serif;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--sky-deep);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card p {
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--text-mid);
}

.card ul {
  list-style: none;
  padding: 0;
  font-size: 0.94rem;
  line-height: 1.9;
  color: var(--text-mid);
}

.card ul li {
  display: flex;
  gap: 8px;
  align-items: flex-start;
}

.card ul li::before {
  content: '◆';
  color: var(--sky-mid);
  font-size: 0.55em;
  margin-top: 6px;
  flex-shrink: 0;
}

/* ── DEPLOYMENT SEQUENCE ── */
.seq {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 12px;
}

.seq-step {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 12px;
  align-items: start;
  padding-bottom: 16px;
  position: relative;
}

.seq-step:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 19px;
  top: 36px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--sky-mid), transparent);
}

.seq-num {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--sky-deep);
  color: #fff;
  font-family: 'Oswald', sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(3,105,161,0.35);
}

.seq-content { padding-top: 4px; }

.seq-title {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--sky-deep);
}

.seq-alt {
  font-size: 0.8rem;
  color: var(--sky-mid);
  font-family: monospace;
}

.seq-desc {
  font-size: 0.88rem;
  color: var(--text-mid);
  line-height: 1.5;
  margin-top: 2px;
}

/* ── TYPES GRID ── */
.types-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 12px;
}

.type-card {
  background: rgba(14,165,233,0.08);
  border: 1px solid rgba(14,165,233,0.25);
  border-radius: 10px;
  padding: 12px;
}

.type-card .type-name {
  font-family: 'Oswald', sans-serif;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--sky-deep);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.type-card .type-desc {
  font-size: 0.82rem;
  color: var(--text-light);
  margin-top: 4px;
  line-height: 1.4;
}

/* ── WIDE ── */
.card.wide { grid-column: 1 / -1; }

/* ── FOOTER ── */
.meta-footer {
  text-align: center;
  margin-top: 48px;
  font-size: 0.82rem;
  color: rgba(14,92,130,0.6);
  font-style: italic;
  border-top: 1px solid rgba(255,255,255,0.4);
  padding-top: 20px;
}

/* ── REVEAL ── */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.visible { opacity: 1; transform: none; }