:root {
  --blue: #0a4f9e;
  --blue-dark: #06376f;
  --blue-soft: #e7f0ff;
  --blue-soft-2: #d9e7ff;

  --text: #0a2a43;
  --muted: #5f7184;
  --white: #ffffff;

  --bg: #f6f9ff;
  --card: rgba(255, 255, 255, 0.86);
  --card-solid: #ffffff;

  --border: rgba(10, 79, 158, 0.14);
  --border-strong: rgba(10, 79, 158, 0.28);

  --shadow-sm: 0 8px 22px rgba(10, 42, 67, 0.08);
  --shadow-md: 0 16px 38px rgba(10, 42, 67, 0.12);
  --shadow-lg: 0 26px 62px rgba(10, 42, 67, 0.18);

  --radius-sm: 14px;
  --radius-md: 22px;
  --radius-lg: 32px;

  --header-h: 76px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 24px);
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.16), transparent 34%),
    radial-gradient(circle at top right, rgba(124, 58, 237, 0.10), transparent 34%),
    linear-gradient(180deg, #ffffff 0%, var(--bg) 45%, #ffffff 100%);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(10, 79, 158, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(10, 79, 158, 0.035) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.55), transparent 72%);
  z-index: -1;
}

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

a {
  color: inherit;
}

main {
  padding-top: var(--header-h);
}

section {
  max-width: 1120px;
  margin: 0 auto;
  padding: 82px 20px;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

section h2 {
  margin: 0 0 34px;
  color: var(--blue);
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.04em;
  text-align: center;
  position: relative;
}

section h2::after {
  content: "";
  display: block;
  width: 76px;
  height: 4px;
  margin: 15px auto 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--blue), #2563eb, #7c3aed);
}

section h3 {
  margin: 32px 0 14px;
  font-size: 23px;
  color: var(--text);
  letter-spacing: -0.02em;
}

section h4 {
  margin: 24px 0 10px;
  font-size: 17px;
  color: var(--blue);
}

section p,
section li {
  color: rgba(10, 42, 67, 0.86);
  line-height: 1.75;
  font-size: 16px;
}

section ul {
  margin: 12px 0 24px;
  padding-left: 22px;
}

section li {
  margin-bottom: 8px;
}

strong {
  color: var(--blue);
}

/* ===== HEADER ===== */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.78);
  border-bottom: 1px solid rgba(10, 79, 158, 0.12);
  backdrop-filter: blur(18px);
  box-shadow: 0 10px 30px rgba(10, 42, 67, 0.08);
}

.site-nav {
  width: min(100%, 980px);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.site-nav a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 9px 14px;
  border-radius: 999px;
  text-decoration: none;
  color: var(--text);
  font-size: 14px;
  font-weight: 800;
  transition:
    color 0.18s ease,
    background 0.18s ease,
    transform 0.18s ease;
}

.site-nav a:hover {
  color: var(--blue);
  background: rgba(10, 79, 158, 0.08);
  transform: translateY(-1px);
}

.site-nav a:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.35);
  outline-offset: 3px;
}

/* ===== HERO ===== */

.hero-section {
  max-width: 1180px;
  min-height: calc(100vh - var(--header-h));
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(260px, 0.65fr);
  align-items: center;
  gap: 54px;
  padding-top: 74px;
  padding-bottom: 76px;
}

.hero-text {
  position: relative;
  padding: 34px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(10, 79, 158, 0.12);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(12px);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  padding: 9px 15px;
  border-radius: 999px;
  color: var(--blue);
  background: rgba(10, 79, 158, 0.09);
  border: 1px solid rgba(10, 79, 158, 0.14);
  font-size: 14px;
  font-weight: 900;
}

.hero-badge::before {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 0 5px rgba(34, 197, 94, 0.15);
}

.hero-text h1 {
  margin: 0;
  font-size: clamp(44px, 7vw, 76px);
  line-height: 0.96;
  letter-spacing: -0.07em;
  color: var(--text);
}

.hero-text h2 {
  margin: 14px 0 26px;
  color: var(--blue);
  font-size: clamp(22px, 3vw, 32px);
  letter-spacing: -0.04em;
}

.hero-info-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 28px 0;
}

.hero-info-item {
  padding: 16px 20px 18px;
  border-radius: 18px;
  background: rgba(231, 240, 255, 0.72);
  border: 1px solid rgba(10, 79, 158, 0.12);
  color: var(--text);
  line-height: 1.45;
  min-height: 84px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.hero-info-item span {
  display: inline-block;
  margin-bottom: 8px;
  padding-top: 3px;
  color: var(--blue);
  font-weight: 700;
  font-size: 13px;
  line-height: 1.4;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: "Segoe UI", Tahoma, Arial, sans-serif;
}

.hero-description {
  max-width: 760px;
  margin: 0;
  font-size: 17px;
}

.hero-photo {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-photo::before {
  content: "";
  position: absolute;
  width: min(360px, 82vw);
  height: min(360px, 82vw);
  border-radius: 50%;
  background:
    linear-gradient(135deg, rgba(10, 79, 158, 0.28), rgba(124, 58, 237, 0.18));
  filter: blur(6px);
  transform: translate(18px, 18px);
  z-index: -1;
}

.hero-photo img {
  width: min(330px, 78vw);
  height: min(330px, 78vw);
  object-fit: cover;
  border-radius: 36% 64% 52% 48% / 46% 42% 58% 54%;
  border: 8px solid rgba(255, 255, 255, 0.78);
  box-shadow: var(--shadow-lg);
}

/* ===== O MNIE ===== */

#about {
  max-width: 1040px;
}

#about > p,
#about > ul,
#about > h3,
#about > h4 {
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

#about > p {
  padding: 24px 26px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

#about ul {
  list-style: none;
  padding-left: 0;
}

#about li {
  position: relative;
  padding: 12px 16px 12px 44px;
  margin-bottom: 10px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(10, 79, 158, 0.10);
  box-shadow: 0 8px 18px rgba(10, 42, 67, 0.05);
}

#about li::before {
  content: "✓";
  position: absolute;
  left: 16px;
  top: 12px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  background: linear-gradient(135deg, var(--blue), #2563eb);
  font-size: 12px;
  font-weight: 900;
}

#about h4 {
  padding: 18px 20px;
  margin-top: 28px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(10, 79, 158, 0.10), rgba(37, 99, 235, 0.04));
  border-left: 5px solid var(--blue);
  box-shadow: 0 8px 18px rgba(10, 42, 67, 0.05);
}

/* ===== UMIEJĘTNOŚCI ===== */

#skills {
  max-width: 1120px;
}

.umiejetnosci {
  display: grid;
  gap: 26px;
}

.umiejetnosci h3 {
  margin: 28px 0 0;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}

.umiejetnosci h3::before {
  content: "";
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), #7c3aed);
  box-shadow: 0 0 0 6px rgba(10, 79, 158, 0.10);
}

.technologie,
.frameworki,
.jezyki,
.dodatkowe {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(245px, 1fr));
  gap: 18px;
  margin-top: 18px;
}

.skill {
  position: relative;
  padding: 18px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition:
    transform 0.22s ease,
    box-shadow 0.22s ease,
    border-color 0.22s ease;
}

.skill:hover {
  transform: translateY(-5px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}

.skill span {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  color: var(--text);
  font-weight: 900;
}

.skill progress {
  width: 100%;
  height: 13px;
  border: 0;
  border-radius: 999px;
  overflow: hidden;
  appearance: none;
}

.skill progress::-webkit-progress-bar {
  background: rgba(10, 79, 158, 0.10);
  border-radius: 999px;
}

.skill progress::-webkit-progress-value {
  background: linear-gradient(90deg, var(--blue), #2563eb, #7c3aed);
  border-radius: 999px;
}

.skill progress::-moz-progress-bar {
  background: linear-gradient(90deg, var(--blue), #2563eb, #7c3aed);
  border-radius: 999px;
}

/* ===== PROJEKTY ===== */

#projects {
  max-width: 1180px;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
  align-items: stretch;
}

.project-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 26px;
  border-radius: 24px;
  background:
    linear-gradient(145deg, rgba(255,255,255,0.96), rgba(230,240,255,0.92));
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease,
    border-color 0.25s ease;
}

.project-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 5px;
  background: linear-gradient(90deg, var(--blue), #2563eb, #7c3aed);
}

.project-card::after {
  content: "";
  position: absolute;
  top: -70px;
  right: -70px;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  background: rgba(37, 99, 235, 0.10);
  pointer-events: none;
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: rgba(10, 79, 158, 0.36);
  box-shadow: var(--shadow-lg);
}

.project-card h3 {
  position: relative;
  z-index: 1;
  margin: 0 0 14px;
  color: var(--text);
  font-size: 21px;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.project-card p {
  position: relative;
  z-index: 1;
  margin: 0;
  font-size: 15px;
}

.project-tags {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin: 14px 0 18px;
}

.tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 7px 11px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(10, 79, 158, 0.18);
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
  line-height: 1;
  box-shadow: 0 5px 14px rgba(10, 79, 158, 0.08);
  transition:
    transform 0.18s ease,
    background 0.18s ease,
    border-color 0.18s ease,
    box-shadow 0.18s ease;
}

.tag:hover {
  transform: translateY(-2px);
  background: #ffffff;
  border-color: rgba(10, 79, 158, 0.38);
  box-shadow: 0 8px 18px rgba(10, 79, 158, 0.13);
}

.project-actions {
  position: relative;
  z-index: 1;
  margin-top: auto;
  padding-top: 22px;
  display: flex;
  justify-content: flex-start;
}

.github-btn,
.app-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 11px 18px;
  border-radius: 999px;
  color: #ffffff;
  background: linear-gradient(135deg, var(--blue), #2563eb);
  border: 0;
  text-decoration: none;
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 0.01em;
  box-shadow: 0 12px 24px rgba(10, 79, 158, 0.25);
  transition:
    transform 0.18s ease,
    box-shadow 0.18s ease,
    filter 0.18s ease,
    background 0.18s ease;
}

.github-btn:hover,
.app-btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.04);
  box-shadow: 0 16px 32px rgba(10, 79, 158, 0.34);
}

.github-btn:active,
.app-btn:active {
  transform: translateY(0);
}

.github-btn:focus-visible,
.app-btn:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.35);
  outline-offset: 3px;
}

.projects-footer {
  margin-top: 38px;
  display: flex;
  justify-content: center;
}

.github-btn--outline {
  color: var(--blue);
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(10, 79, 158, 0.24);
  box-shadow: 0 12px 28px rgba(10, 42, 67, 0.10);
}

.github-btn--outline:hover {
  background: #ffffff;
  box-shadow: 0 16px 36px rgba(10, 42, 67, 0.16);
}

/* ===== APLIKACJE MOBILNE ===== */

#apps {
  max-width: 1180px;
}

.mobile-apps {
  display: grid;
  gap: 24px;
}

.app-card.app-row {
  position: relative;
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr) auto;
  align-items: center;
  gap: 26px;
  padding: 24px;
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition:
    transform 0.24s ease,
    box-shadow 0.24s ease,
    border-color 0.24s ease;
}

.app-card.app-row::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 6px;
  background: linear-gradient(180deg, var(--blue), #2563eb, #7c3aed);
}

.app-card.app-row:hover {
  transform: translateY(-7px);
  border-color: rgba(10, 79, 158, 0.32);
  box-shadow: var(--shadow-lg);
}

.app-image {
  width: 96px;
  height: 96px;
  border-radius: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(10, 79, 158, 0.10), rgba(124, 58, 237, 0.08));
  border: 1px solid rgba(10, 79, 158, 0.14);
  box-shadow: 0 12px 26px rgba(10, 42, 67, 0.10);
  flex-shrink: 0;
}

.app-image .logo {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.app-image-placeholder {
  color: var(--blue);
  font-size: 28px;
  font-weight: 900;
  letter-spacing: 1px;
}

.app-content h3 {
  margin: 0 0 8px;
  font-size: 23px;
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: var(--text);
}

.app-content p {
  margin: 0;
  color: rgba(10, 42, 67, 0.80);
  line-height: 1.7;
}

.app-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 190px;
}

.app-actions .app-btn:nth-child(2) {
  color: var(--blue);
  background: rgba(10, 79, 158, 0.08);
  border: 1px solid rgba(10, 79, 158, 0.16);
  box-shadow: none;
}

.app-actions .app-btn:nth-child(2):hover {
  background: rgba(10, 79, 158, 0.12);
  box-shadow: 0 10px 22px rgba(10, 42, 67, 0.08);
}

/* ===== FOOTER / KONTAKT ===== */

footer {
  position: relative;
  margin-top: 40px;
  padding: 64px 20px;
  text-align: center;
  color: #ffffff;
  background:
    radial-gradient(circle at top left, rgba(255,255,255,0.16), transparent 30%),
    linear-gradient(135deg, var(--blue-dark), var(--blue), #2563eb);
  overflow: hidden;
}

footer::before {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.10);
}

footer h2 {
  color: #ffffff;
  margin: 0 0 18px;
  font-size: clamp(30px, 4vw, 42px);
}

footer h2::after {
  background: rgba(255, 255, 255, 0.82);
}

footer p {
  margin: 0;
  color: rgba(255,255,255,0.88);
  font-size: 17px;
}

footer a {
  color: #ffffff;
  font-weight: 900;
  text-decoration: none;
  border-bottom: 2px solid rgba(255,255,255,0.55);
  transition: border-color 0.18s ease, opacity 0.18s ease;
}

footer a:hover {
  border-color: #ffffff;
  opacity: 0.92;
}

/* ===== RESPONSYWNOŚĆ ===== */

@media (max-width: 900px) {
  :root {
    --header-h: 96px;
  }

  .hero-section {
    min-height: auto;
    grid-template-columns: 1fr;
    text-align: center;
    gap: 36px;
    padding-top: 58px;
  }

  .hero-text {
    order: 2;
  }

  .hero-photo {
    order: 1;
  }

  .hero-info-grid {
    text-align: left;
  }

  .app-card.app-row {
    grid-template-columns: 88px 1fr;
  }

  .app-actions {
    grid-column: 1 / -1;
    flex-direction: row;
    min-width: 0;
  }

  .app-btn {
    flex: 1;
  }
}

@media (max-width: 768px) {
  :root {
    --header-h: 112px;
  }

  section {
    padding: 66px 16px;
  }

  .site-header {
    padding: 12px;
  }

  .site-nav {
    gap: 6px;
  }

  .site-nav a {
    min-height: 36px;
    padding: 8px 11px;
    font-size: 13px;
  }

  .hero-text {
    padding: 26px 20px;
    border-radius: 26px;
  }

  .hero-info-grid {
    grid-template-columns: 1fr;
  }

  .projects-grid,
  .technologie,
  .frameworki,
  .jezyki,
  .dodatkowe {
    grid-template-columns: 1fr;
  }

  .github-btn {
    width: 100%;
  }

  .projects-footer .github-btn {
    width: auto;
  }
}

@media (max-width: 560px) {
  :root {
    --header-h: 132px;
  }

  body {
    background:
      radial-gradient(circle at top left, rgba(37, 99, 235, 0.12), transparent 28%),
      linear-gradient(180deg, #ffffff 0%, var(--bg) 45%, #ffffff 100%);
  }

  .hero-section {
    padding-top: 42px;
  }

  .hero-text h1 {
    font-size: 44px;
  }

  .hero-photo img {
    border-radius: 32px;
  }

  .app-card.app-row {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .app-image {
    margin: 0 auto;
  }

  .app-actions {
    flex-direction: column;
  }

  .projects-footer .github-btn {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}