/* Nexster Consulting — site-wide styles (light + dark themes)
   Palette v2: aligned to the Nexster lean logo gradient (blue #0050F0 → violet #7020D0).
   Teal removed entirely. Primary buttons mirror the logo gradient. */
:root {
  --max: 1160px;
  --violet: #7020d0;      /* logo right end (purple) */
  --violet-bright: #8a4af0; /* logo purple, lifted for dark bg */
  --blue: #0050f0;         /* logo left end (blue) */
  --blue-bright: #7fa6ff;  /* logo blue, lifted for dark bg text accents */
  --grad: linear-gradient(135deg, #0050f0 0%, #7020d0 100%);
  --grad-soft: linear-gradient(135deg, #3b6cf0 0%, #8a4af0 100%);
  --radius: 18px;
  --font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
[data-theme="dark"] {
  --bg: #070b18;
  --bg-soft: #0c1226;
  --text: #edf1fa;
  --muted: #a6b0c8;
  --line: rgba(237, 241, 250, .14);
  --card: rgba(255, 255, 255, .055);
  --accent: var(--blue-bright);
  --accent-strong: var(--blue-bright);
  --accent-2: var(--violet-bright);
  --accent-contrast: #070b18;
  --accent-soft: rgba(127, 166, 255, .12);
  --btn-grad: var(--grad-soft);
  --logo: url("nexster-logo-white-transparent-background - lean.png");
  --shadow: 0 18px 44px rgba(0, 0, 0, .42);
  --hero-glow: radial-gradient(circle at 82% 12%, rgba(138, 74, 240, .26), transparent 55%),
               radial-gradient(circle at 12% 88%, rgba(59, 108, 240, .18), transparent 52%);
}
[data-theme="light"] {
  --bg: #f8faff;
  --bg-soft: #ffffff;
  --text: #101c2c;
  --muted: #51617a;
  --line: rgba(16, 28, 44, .12);
  --card: #ffffff;
  --accent: var(--blue);
  --accent-strong: var(--blue);
  --accent-2: var(--violet);
  --accent-contrast: #ffffff;
  --accent-soft: rgba(0, 80, 240, .08);
  --btn-grad: var(--grad);
  --logo: url("nexster-logo-transparent-background - lean.png");
  --shadow: 0 16px 40px rgba(16, 28, 44, .10);
  --hero-glow: radial-gradient(circle at 82% 10%, rgba(112, 32, 208, .14), transparent 52%),
               radial-gradient(circle at 10% 90%, rgba(0, 80, 240, .10), transparent 50%);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.55;
  transition: background .25s ease, color .25s ease;
}
a { color: inherit; }
.shell { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }

/* ---------- header ---------- */
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 0; border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
}
.brand img.brand-logo { height: 34px; width: auto; display: block; }
.nav-right { display: flex; align-items: center; gap: 20px; }
.nav-links { display: flex; gap: 22px; color: var(--muted); font-size: .92rem; flex-wrap: wrap; }
.nav-links a { text-decoration: none; padding: 4px 2px; border-radius: 8px; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--accent); }
.theme-toggle {
  border: 1px solid var(--line); background: var(--card); color: var(--text);
  width: 38px; height: 38px; border-radius: 50%; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center; font-size: 1rem;
  transition: transform .15s ease;
}
.theme-toggle:hover { transform: rotate(15deg); }

/* ---------- hero ---------- */
.hero { padding: 96px 0 88px; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0; background: var(--hero-glow); pointer-events: none;
}
.hero.compact { padding: 68px 0 60px; }
.hero > .shell { position: relative; }
.eyebrow {
  color: var(--accent); text-transform: uppercase; letter-spacing: .18em;
  font-size: .75rem; font-weight: 800;
}
h1 {
  max-width: 840px; margin: 18px 0 24px;
  font-size: clamp(2.9rem, 6.4vw, 5.6rem); line-height: 1.0; letter-spacing: -.055em;
}
h1.compact, h2.compact { font-size: clamp(2.4rem, 5.4vw, 3.9rem); margin-top: 14px; }
.hero-copy { max-width: 660px; color: var(--muted); font-size: clamp(1.02rem, 1.9vw, 1.22rem); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 0 22px; border-radius: 999px; text-decoration: none;
  font-weight: 750; border: 1px solid var(--line); transition: transform .15s ease, box-shadow .15s ease;
}
.button.primary { background: var(--btn-grad); color: var(--accent-contrast); border-color: transparent; box-shadow: var(--shadow); }
.button.secondary { color: var(--text); background: var(--card); }
.button:hover { transform: translateY(-1px); }

/* ---------- signal strip ---------- */
.signal {
  margin-top: 60px; display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.signal div { padding: 20px 20px 20px 0; border-right: 1px solid var(--line); }
.signal div:not(:first-child) { padding-left: 20px; }
.signal div:last-child { border-right: 0; }
.signal strong { display: block; font-size: 1rem; }
.signal span { display: block; color: var(--muted); font-size: .88rem; margin-top: 4px; }

/* ---------- sections ---------- */
section { padding: 88px 0; border-top: 1px solid var(--line); }
.section-head { display: flex; justify-content: space-between; gap: 40px; align-items: end; margin-bottom: 34px; }
h2 { font-size: clamp(1.9rem, 3.6vw, 3rem); line-height: 1.04; letter-spacing: -.045em; margin: 0; max-width: 700px; }
.section-intro { max-width: 460px; color: var(--muted); margin: 0; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow);
}
.card .num { color: var(--accent-2); font-weight: 800; font-size: .78rem; letter-spacing: .13em; }
h3 { margin: 14px 0 10px; font-size: 1.3rem; letter-spacing: -.02em; }
.card p, .card li { color: var(--muted); }
.card ul { margin: 12px 0 0; padding-left: 18px; }
.course-card { display: flex; flex-direction: column; }
.course-card .meta { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; margin-top: auto; padding-top: 14px; align-items: flex-end; }
.pill {
  display: inline-block; border: 1px solid var(--line); color: var(--muted);
  border-radius: 999px; padding: 4px 10px; font-size: .74rem; font-weight: 700;
}
.pill.hot {
  color: var(--accent-2); border-color: var(--accent-2);
  background: color-mix(in srgb, var(--accent-2) 10%, transparent);
}
.process { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.step { padding: 24px 22px 24px 0; border-top: 2px solid var(--accent-2); margin-right: 16px; }
.step:not(:first-child) { padding-left: 18px; border-left: 1px solid var(--line); }
.step small { color: var(--accent-2); font-weight: 800; }
.step h3 { margin-top: 18px; }
.feature-course { display: grid; grid-template-columns: 1.2fr .8fr; gap: 18px; }
.feature-main {
  background: linear-gradient(135deg, var(--accent-soft), transparent 70%);
  border: 1px solid var(--line); border-radius: 22px; padding: 34px; box-shadow: var(--shadow);
}
.feature-side { background: var(--card); border: 1px solid var(--line); border-radius: 22px; padding: 34px; box-shadow: var(--shadow); }
.tag {
  display: inline-block; color: var(--accent-2); border: 1px solid var(--accent-2);
  background: color-mix(in srgb, var(--accent-2) 10%, transparent);
  border-radius: 999px; padding: 5px 12px; font-size: .76rem; font-weight: 800;
}
.feature-main h3 { font-size: 1.9rem; margin-top: 18px; }
.feature-side .num { color: var(--accent-2); font-weight: 800; font-size: .78rem; letter-spacing: .13em; }
.boundaries { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.boundary { border-radius: var(--radius); padding: 24px; border: 1px solid var(--line); background: var(--card); }
.boundary.good { border-color: var(--accent-2); background: color-mix(in srgb, var(--accent-2) 10%, transparent); }
.boundary h3 { margin: 0 0 10px; }
.contact { display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: center; }
.contact-box { border: 1px solid var(--line); border-radius: 22px; padding: 28px; background: var(--card); box-shadow: var(--shadow); }

/* ---------- page CTA band ---------- */
.page-cta {
  background: linear-gradient(135deg, var(--accent-soft), color-mix(in srgb, var(--accent-2) 6%, transparent) 65%);
}
.page-cta .contact { padding: 8px 0; }

/* ---------- footer ---------- */
footer { padding: 30px 0 44px; color: var(--muted); font-size: .83rem; border-top: 1px solid var(--line); }
footer .foot-brand img { height: 26px; width: auto; margin-bottom: 12px; }
.fine { color: var(--muted); opacity: .82; font-size: .76rem; max-width: 780px; }

/* ---------- hero split layout ---------- */
.hero-split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; }
.hero-art { margin: 0; }
.hero-art img {
  width: 100%; height: auto; border-radius: 22px;
  border: 1px solid var(--line); box-shadow: var(--shadow);
  background: var(--card);
}

/* ---------- image course cards ---------- */
.course-grid { align-items: stretch; }
.course-card-img {
  display: flex; flex-direction: column;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow);
}
.course-card-img img { width: 100%; height: auto; aspect-ratio: 900/560; object-fit: cover; display: block; }
.cci-body { padding: 20px 22px 22px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.cci-body h3 { margin: 0; font-size: 1.18rem; }
.cci-body p { color: var(--muted); font-size: .92rem; margin: 0; }
.cci-body .meta { margin-top: auto; padding-top: 10px; }

.compact-band section, section.compact-band { padding: 56px 0; }

/* ---------- why cards (LEAD-style icon band) ---------- */
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.why-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--shadow);
}
.why-card img { width: 64px; height: 64px; display: block; margin-bottom: 14px; }
.why-card h3 { margin: 0 0 6px; font-size: 1.08rem; }
.why-card p { color: var(--muted); font-size: .9rem; margin: 0; }

@keyframes heroFloat { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
.hero-art img { animation: heroFloat 7s ease-in-out infinite; }

@media (max-width: 920px) {
  .hero-split { grid-template-columns: 1fr; gap: 26px; }
  .why-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) { .why-grid { grid-template-columns: 1fr; } }
@media (max-width: 920px) {
  .nav-links { display: none; }
  .hero { padding-top: 64px; }
  .signal, .grid-3, .process, .feature-course, .boundaries, .contact { grid-template-columns: 1fr; }
  .signal div { border-right: 0; border-bottom: 1px solid var(--line); padding: 16px 0 !important; }
  .signal div:last-child { border-bottom: 0; }
  .step, .step:not(:first-child) { border-left: 0; margin: 0; padding: 20px 0; }
  .feature-main, .feature-side { padding: 26px; }
  section { padding: 64px 0; }
}