/* ==========================================================================
   Insidemind — strona wizytówka
   Dark-only, czysty CSS, zero zależności.
   Kolejność: tokeny, reset, pomocnicze, tło, header, hero, liczby,
   sekcje, karty, o mnie, kroki, kontakt, footer, responsywność.
   ========================================================================== */

/* ---------- Tokeny ---------- */
:root {
  color-scheme: dark;

  /* tła — od najciemniejszego */
  --bg:         #080b11;
  --bg-raise:   #0d121b;
  --bg-card:    #101724;
  --bg-hover:   #141d2c;

  /* tekst */
  --text:       #e9eff7;
  --text-dim:   #a3b2c4;
  --text-faint: #77899e;

  /* linie */
  --line:       #1b2534;
  --line-hi:    #2c3a4d;

  /* akcenty */
  --accent:     #5eead4;
  --accent-dim: #2d8f80;
  --accent-2:   #8aa8ff;
  --accent-ink: #04221e;
  --accent-glow: rgb(94 234 212 / 0.14);

  --grid-line:  rgb(148 180 214 / 0.055);

  --radius: 14px;
  --radius-sm: 9px;
  --wrap: 72rem;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto,
          "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
          "Liberation Mono", monospace;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3 { line-height: 1.15; text-wrap: balance; margin: 0 0 0.5em; }
p { margin: 0 0 1rem; }
ul, ol { margin: 0 0 1rem; padding-left: 1.15rem; }
li { margin-bottom: 0.45rem; }

a { color: var(--accent); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- Pomocnicze ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: 1rem; top: -4rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--accent);
  color: var(--accent-ink);
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-decoration: none;
  transition: top 0.15s;
}
.skip-link:focus { top: 1rem; }

/* etykieta monospace: „Dla kogo”, „Efekt”, „Co robię” */
.k {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}
.k-block { display: block; margin-bottom: 0.5rem; }
.card-for .k, .card-effect .k { margin-right: 0.5rem; }

/* ---------- Siatka w tle ---------- */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 72px 72px;
  background-position: center top;
  -webkit-mask-image: radial-gradient(ellipse 100% 60% at 50% 0%, #000 25%, transparent 85%);
          mask-image: radial-gradient(ellipse 100% 60% at 50% 0%, #000 25%, transparent 85%);
}

/* ---------- Przyciski ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.97rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.14s ease, background-color 0.14s ease,
              border-color 0.14s ease, box-shadow 0.14s ease;
}
.btn-lg { padding: 0.95rem 1.9rem; font-size: 1.02rem; }

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 0 0 0 var(--accent-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px -6px var(--accent-glow), 0 0 0 1px var(--accent-dim);
}

.btn-ghost {
  color: var(--text);
  border-color: var(--line-hi);
  background: rgb(255 255 255 / 0.02);
}
.btn-ghost:hover {
  border-color: var(--accent-dim);
  color: var(--accent);
  background: rgb(94 234 212 / 0.06);
  transform: translateY(-2px);
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgb(8 11 17 / 0.72);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  min-height: 4.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 650;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--text);
}
.brand-mark {
  width: 0.7rem; height: 0.7rem;
  border-radius: 3px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 14px var(--accent-glow);
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.5rem;
  list-style: none;
  margin: 0; padding: 0;
  font-size: 0.93rem;
}
.nav-list li { margin: 0; }
.nav-list a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.14s;
}
.nav-list a:hover { color: var(--text); }
.nav-list .nav-cta {
  color: var(--accent);
  font-weight: 600;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-block: clamp(4rem, 11vw, 8.5rem) clamp(3rem, 7vw, 5.5rem);
  border-bottom: 1px solid var(--line);
}

.hero-glow {
  position: absolute;
  top: -22%; left: 50%;
  transform: translateX(-50%);
  width: min(78rem, 130%);
  height: 42rem;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 46% 50% at 42% 42%, rgb(94 234 212 / 0.13), transparent 70%),
    radial-gradient(ellipse 42% 45% at 68% 32%, rgb(138 168 255 / 0.11), transparent 70%);
  filter: blur(28px);
}

.hero-inner { position: relative; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.6rem;
  padding: 0.4rem 0.9rem 0.4rem 0.7rem;
  border: 1px solid var(--line-hi);
  border-radius: 999px;
  background: rgb(255 255 255 / 0.025);
  font-family: var(--mono);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.eyebrow .dot {
  width: 0.45rem; height: 0.45rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgb(94 234 212 / 0.16);
}

.hero h1 {
  font-size: clamp(2.35rem, 1.3rem + 4.6vw, 4.6rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  margin-bottom: 1.5rem;
}
.hero h1 .grad {
  background: linear-gradient(100deg, var(--accent) 5%, var(--accent-2) 95%);
  -webkit-background-clip: text;
          background-clip: text;
  color: transparent;
}

.lede {
  max-width: 54ch;
  font-size: clamp(1.08rem, 1rem + 0.5vw, 1.32rem);
  line-height: 1.6;
  color: var(--text-dim);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2.4rem;
}

.tagline {
  max-width: 46ch;
  margin: 3.5rem 0 0;
  padding: 0.2rem 0 0.2rem 1.4rem;
  border-left: 2px solid var(--accent-dim);
  font-family: var(--mono);
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--text-faint);
}

/* ---------- Liczby ---------- */
.stats {
  padding-block: clamp(2.5rem, 5vw, 3.5rem);
  background: var(--bg-raise);
  border-bottom: 1px solid var(--line);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13.5rem, 1fr));
  gap: 2rem 1rem;
  list-style: none;
  margin: 0; padding: 0;
}
.stat {
  margin: 0;
  padding-left: 1.25rem;
  border-left: 1px solid var(--line-hi);
}

.stat-value {
  display: block;
  font-family: var(--mono);
  font-size: clamp(1.7rem, 1.3rem + 1.5vw, 2.35rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--text);
}
.stat-plus { color: var(--accent); }
.stat-unit {
  margin-left: 0.18em;
  font-size: 0.48em;
  font-weight: 500;
  color: var(--text-faint);
}
.stat-arrow {
  margin-inline: 0.28em;
  font-size: 0.72em;
  color: var(--accent);
}

.stat-label {
  display: block;
  margin-top: 0.6rem;
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--text-dim);
  text-wrap: pretty;
}

/* ---------- Sekcje ---------- */
.section { padding-block: clamp(3.5rem, 8vw, 6.5rem); }

.section-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 2.75rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid var(--line);
}
.section-num {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--accent);
}
.section-head h2 {
  margin: 0;
  font-size: clamp(1.6rem, 1.25rem + 1.4vw, 2.3rem);
  font-weight: 650;
  letter-spacing: -0.025em;
}

/* ---------- Karty usług ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr));
  gap: 1.25rem;
}

.card {
  position: relative;
  padding: 2rem 1.75rem 1.75rem;
  background:
    linear-gradient(180deg, rgb(255 255 255 / 0.028), transparent 55%),
    var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.16s ease, transform 0.16s ease, background-color 0.16s ease;
}
.card::before {
  content: "";
  position: absolute;
  top: -1px; left: 1.6rem; right: 1.6rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-dim), transparent);
  opacity: 0;
  transition: opacity 0.16s ease;
}
.card:hover {
  border-color: var(--line-hi);
  background: var(--bg-hover);
  transform: translateY(-3px);
}
.card:hover::before { opacity: 1; }

.card-num {
  display: block;
  margin-bottom: 0.9rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--text-faint);
}

.card h3 {
  font-size: 1.22rem;
  font-weight: 650;
  letter-spacing: -0.015em;
  margin-bottom: 1rem;
}

.card-for {
  font-size: 0.94rem;
  line-height: 1.6;
  color: var(--text-dim);
}

.card ul {
  font-size: 0.94rem;
  line-height: 1.6;
  color: var(--text-dim);
  margin-bottom: 0;
}
.card ul li::marker { color: var(--accent-dim); }

.card-effect {
  margin: 1.4rem 0 0;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
  font-size: 0.94rem;
  line-height: 1.6;
  color: var(--text);
}

/* ---------- AI w praktyce: zasady ---------- */
.section-ai {
  background: var(--bg-raise);
  border-block: 1px solid var(--line);
}

.principles {
  display: grid;
  gap: 1rem;
  list-style: none;
  margin: 0; padding: 0;
  counter-reset: none;
}

.principles li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
  margin: 0;
  padding: 1.6rem 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.16s ease, background-color 0.16s ease;
}
.principles li:hover {
  border-color: var(--line-hi);
  background: var(--bg-hover);
}

.principle-num {
  font-family: var(--mono);
  font-size: clamp(1.4rem, 1.1rem + 1vw, 1.9rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: transparent;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
          background-clip: text;
}

.principle-body h3 {
  font-size: 1.12rem;
  font-weight: 650;
  letter-spacing: -0.015em;
  margin-bottom: 0.45rem;
}
.principle-body p {
  margin: 0;
  font-size: 0.97rem;
  line-height: 1.65;
  color: var(--text-dim);
  max-width: 78ch;
}

/* ---------- O mnie ---------- */
.about {
  display: grid;
  grid-template-columns: minmax(0, 1.9fr) minmax(0, 1fr);
  gap: 3rem;
  align-items: start;
}
.about-text { max-width: 62ch; font-size: 1.05rem; }

.pull {
  margin-top: 1.9rem;
  padding: 1.25rem 1.4rem;
  background: linear-gradient(135deg, rgb(94 234 212 / 0.07), rgb(138 168 255 / 0.05));
  border: 1px solid var(--line-hi);
  border-left: 2px solid var(--accent);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  margin-bottom: 0;
}

.about-side {
  padding: 1.5rem;
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  list-style: none;
  margin: 0; padding: 0;
}
.tags li {
  margin: 0;
  padding: 0.32rem 0.7rem;
  border: 1px solid var(--line-hi);
  border-radius: 999px;
  background: rgb(255 255 255 / 0.02);
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--text-dim);
}

/* ---------- Kroki ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1.25rem;
  list-style: none;
  margin: 0; padding: 0;
}

.steps li {
  position: relative;
  margin: 0;
  padding: 1.6rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.1rem; height: 2.1rem;
  margin-bottom: 1rem;
  border: 1px solid var(--accent-dim);
  border-radius: 50%;
  background: rgb(94 234 212 / 0.07);
  font-family: var(--mono);
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--accent);
}

.steps h3 {
  font-size: 1.08rem;
  font-weight: 650;
  margin-bottom: 0.4rem;
}
.steps p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.6;
  color: var(--text-dim);
}

/* ---------- Kontakt ---------- */
.section-contact { padding-bottom: clamp(4rem, 9vw, 7rem); }

.contact-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(2.5rem, 6vw, 4.5rem) clamp(1.75rem, 5vw, 4rem);
  background: var(--bg-raise);
  border: 1px solid var(--line-hi);
  border-radius: calc(var(--radius) + 6px);
  text-align: center;
}

.contact-glow {
  position: absolute;
  top: -60%; left: 50%;
  transform: translateX(-50%);
  width: 46rem; height: 34rem;
  pointer-events: none;
  background:
    radial-gradient(ellipse 50% 50% at 50% 50%, rgb(94 234 212 / 0.16), transparent 70%),
    radial-gradient(ellipse 40% 40% at 70% 40%, rgb(138 168 255 / 0.11), transparent 70%);
  filter: blur(34px);
}

.contact-panel h2 {
  position: relative;
  max-width: 26ch;
  margin-inline: auto;
  font-size: clamp(1.55rem, 1.15rem + 1.8vw, 2.45rem);
  font-weight: 650;
  letter-spacing: -0.03em;
}

.contact-text {
  position: relative;
  max-width: 44ch;
  margin: 1.1rem auto 0;
  font-size: 1.08rem;
  color: var(--text-dim);
}

.contact-actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.85rem;
  margin: 2.25rem 0 0;
}

/* ---------- Footer ---------- */
.site-footer {
  padding-block: 2.25rem;
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
  color: var(--text-faint);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  align-items: center;
  justify-content: space-between;
}
.footer-inner p { margin: 0; }

.footer-brand { font-weight: 650; color: var(--text-dim); }

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  font-family: var(--mono);
  font-size: 0.82rem;
}
.footer-meta a { color: var(--text-dim); text-decoration: none; }
.footer-meta a:hover { color: var(--accent); }

/* ---------- Responsywność ---------- */
@media (max-width: 54rem) {
  .about { grid-template-columns: 1fr; gap: 2rem; }
  .stat { padding-left: 1rem; }
}

@media (max-width: 34rem) {
  .principles li { grid-template-columns: 1fr; gap: 0.6rem; padding: 1.4rem 1.25rem; }
  .nav-list { gap: 0.25rem 1.1rem; font-size: 0.88rem; }
  .hero-actions .btn, .contact-actions .btn { flex: 1 1 100%; justify-content: center; }
  .stat-grid { gap: 1.5rem 1rem; }
}

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