/* ZeroOps Dev Academy - Placeholder Site Styles
   Brand palette:
   - Charcoal: #1E1F23
   - Slate:    #5F6773
   - Amber:    #FFB703 / #F5A400
   - Teal:     #00B4D8
   - Surface:  #F6F8FB
*/

:root {
  --bg: #ffffff;
  --surface: #F6F8FB;
  --text: #1E1F23;
  --muted: #5F6773;
  --line: rgba(30,31,35,.12);

  --amber: #FFB703;
  --amber2: #F5A400;
  --teal: #00B4D8;

  --shadow: 0 16px 40px rgba(30,31,35,.10);
  --shadow2: 0 10px 24px rgba(30,31,35,.12);

  --radius: 18px;
  --radius2: 26px;

  --max: 1100px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
}
img { max-width: 100%; height: auto; display: block; }

a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

.container {
  width: min(var(--max), calc(100% - 2.2rem));
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.skip-link:focus {
  left: 1rem;
  top: 1rem;
  width: auto;
  height: auto;
  padding: .7rem 1rem;
  background: #fff;
  border: 2px solid var(--teal);
  border-radius: 12px;
  z-index: 9999;
}

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .85rem 0;
  gap: 1rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: .8rem;
  min-width: 220px;
}
.brand img {
  width: 210px;
  height: auto;
}
.nav {
  display: flex;
  align-items: center;
  gap: .9rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.nav a {
  font-weight: 600;
  color: rgba(30,31,35,.88);
  padding: .5rem .6rem;
  border-radius: 12px;
}
.nav a:hover {
  background: rgba(0,180,216,.10);
  text-decoration: none;
}
.nav .cta {
  background: linear-gradient(135deg, var(--amber), var(--amber2));
  color: #111;
  box-shadow: 0 10px 22px rgba(245,164,0,.25);
}
.nav .cta:hover {
  background: linear-gradient(135deg, var(--amber2), var(--amber));
}

.hero {
  padding: 4.2rem 0 2.2rem;
  background:
    radial-gradient(1100px 420px at 10% 0%, rgba(0,180,216,.18), transparent 55%),
    radial-gradient(1000px 460px at 90% 10%, rgba(255,183,3,.20), transparent 55%),
    linear-gradient(180deg, var(--surface), #ffffff 55%);
  border-bottom: 1px solid var(--line);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 2rem;
  align-items: center;
}
.kicker {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: .45rem .75rem;
  background: rgba(0,180,216,.10);
  border: 1px solid rgba(0,180,216,.20);
  border-radius: 999px;
  font-weight: 700;
  color: rgba(30,31,35,.88);
}
.kicker .dot {
  width: .55rem; height: .55rem;
  border-radius: 50%;
  background: var(--teal);
}
h1 {
  margin: 1rem 0 .9rem;
  font-size: clamp(2.0rem, 4.5vw, 3.2rem);
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.lead {
  font-size: 1.1rem;
  color: rgba(30,31,35,.82);
  max-width: 58ch;
}
.hero-actions {
  display: flex;
  gap: .85rem;
  flex-wrap: wrap;
  margin-top: 1.35rem;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .55rem;
  padding: .9rem 1.05rem;
  border-radius: 14px;
  border: 1px solid var(--line);
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
  transition: transform .12s ease, box-shadow .12s ease, background .12s ease;
}
.button:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow2);
  text-decoration: none;
}
.button.primary {
  background: linear-gradient(135deg, var(--amber), var(--amber2));
  border-color: rgba(245,164,0,.35);
  color: #111;
}
.button.secondary {
  background: #fff;
}
.button.ghost {
  background: rgba(0,180,216,.08);
  border-color: rgba(0,180,216,.25);
}

.hero-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius2);
  box-shadow: var(--shadow);
  padding: 1.25rem;
}
.hero-card .icon {
  width: 92px;
}
.hero-card h2 {
  margin: .75rem 0 .2rem;
  font-size: 1.15rem;
}
.hero-card p {
  margin: .2rem 0 0;
  color: rgba(30,31,35,.78);
}
.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .8rem;
  margin-top: 1rem;
}
.metric {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: .75rem;
  background: linear-gradient(180deg, #fff, rgba(246,248,251,.85));
}
.metric strong {
  display: block;
  font-size: 1.05rem;
}
.metric span {
  color: rgba(30,31,35,.72);
  font-size: .9rem;
}

.section {
  padding: 3.2rem 0;
}
.section.alt {
  background: var(--surface);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.section h2 {
  margin: 0 0 .75rem;
  font-size: clamp(1.5rem, 2.6vw, 2.15rem);
  letter-spacing: -0.01em;
}
.section .sub {
  margin: 0 0 1.6rem;
  color: rgba(30,31,35,.78);
  max-width: 75ch;
}

.grid {
  display: grid;
  gap: 1rem;
}
.grid.cols-3 {
  grid-template-columns: repeat(3, 1fr);
}
.grid.cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem 1.1rem 1.0rem;
  box-shadow: 0 10px 26px rgba(30,31,35,.06);
}
.card h3 {
  margin: .2rem 0 .3rem;
  font-size: 1.05rem;
}
.card p {
  margin: .2rem 0 0;
  color: rgba(30,31,35,.76);
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  font-size: .85rem;
  font-weight: 800;
  padding: .35rem .6rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255,183,3,.14);
}
.badge .bolt {
  width: .6rem; height: .6rem;
  border-radius: 4px;
  background: linear-gradient(135deg, var(--amber), var(--amber2));
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
  align-items: start;
}
.highlight {
  border-radius: var(--radius2);
  background:
    radial-gradient(750px 320px at 0% 0%, rgba(0,180,216,.20), transparent 55%),
    radial-gradient(650px 320px at 100% 20%, rgba(255,183,3,.22), transparent 55%),
    linear-gradient(180deg, #fff, rgba(246,248,251,.7));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 1.25rem;
}
.list {
  margin: .9rem 0 0;
  padding-left: 1.1rem;
  color: rgba(30,31,35,.78);
}
.list li { margin: .45rem 0; }

.inline-form {
  display: flex;
  gap: .65rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}
.input {
  flex: 1 1 240px;
  min-width: 200px;
  padding: .9rem 1rem;
  border-radius: 14px;
  border: 1px solid var(--line);
  font-weight: 650;
}
.input:focus {
  outline: 3px solid rgba(0,180,216,.25);
  border-color: rgba(0,180,216,.35);
}

.note {
  font-size: .92rem;
  color: rgba(30,31,35,.72);
  margin-top: .6rem;
}

.page-title {
  padding: 2.2rem 0 1.2rem;
}
.page-title h1 {
  margin: 0;
  font-size: clamp(1.8rem, 3.2vw, 2.5rem);
}
.prose {
  padding: 1.1rem 0 3rem;
}
.prose h2 {
  margin-top: 2rem;
  font-size: 1.35rem;
}
.prose p, .prose li {
  color: rgba(30,31,35,.82);
}
.prose a { color: rgba(0,180,216,1); }

.footer {
  border-top: 1px solid var(--line);
  padding: 1.6rem 0;
  background: #fff;
}
.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer small {
  color: rgba(30,31,35,.70);
}
.footer .links {
  display: flex;
  gap: .9rem;
  flex-wrap: wrap;
}
.footer .links a {
  color: rgba(30,31,35,.80);
  font-weight: 650;
}

@media (max-width: 940px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .brand img { width: 190px; }
  .grid.cols-3 {
    grid-template-columns: 1fr;
  }
  .grid.cols-2 {
    grid-template-columns: 1fr;
  }
  .split {
    grid-template-columns: 1fr;
  }
  .hero-metrics {
    grid-template-columns: 1fr;
  }
}