/* =====================
   THEME
===================== */
:root{
  --bg: #0b0f13;
  --ink: #222;
  --muted: #5b6770;
  --paper: #ffffff;
  --paper-2: #f7fbfa;

  /* Primary accent (green from skills/footer) */
  --accent: #1abc9c;
  --accent-ink: #0c6f5c;

  /* Hero gradient base */
  --hero-a: #003153;
  --hero-b: #1b1b1b;

  /* Dimensions */
  --wrap: 1200px;
  --radius: 16px;
  --gap: clamp(12px, 2vw, 24px);

  /* Project image heights (easy knobs) */
  --img-XS: 260px;
  --img-S: 320px;
  --img-M: 440px;
  --img-L: 520px;
}

/* =====================
   BASE
===================== */
* { box-sizing: border-box; }
html, body { margin:0; padding:0; scroll-behavior:smooth; }
body{
  font-family: 'Roboto', system-ui, -apple-system, Segoe UI, Helvetica, Arial, sans-serif;
  line-height: 1.65;
  color: #333;
  background: var(--paper);
  font-size: 16px;
}

img{ max-width:100%; display:block; }
a{ color: var(--accent); text-decoration: none; }
a:hover{ text-decoration: underline; }

.wrap{ max-width: var(--wrap); margin: 0 auto; padding: 0 16px; }

.heading-xl{
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: clamp(2.2rem, 3.4vw + 1rem, 3.4rem);
  letter-spacing: .2px;
  margin: 0 0 .25rem;
}
.heading-lg{
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: clamp(1.6rem, 1.4vw + 1rem, 2.2rem);
  margin:0;
}

.subheading{
  font-weight: 500;
  color: #e6f7f1;
  opacity: .95;
  margin: .25rem 0 1rem;
}

/* =====================
   NAV
===================== */
.nav{
  position: sticky; top:0; z-index: 1000;
  background: rgba(0,0,0,.85);
  backdrop-filter: saturate(1.1) blur(6px);
}
.nav .wrap{ display:flex; align-items:center; justify-content:space-between; padding: 10px 16px; gap: 10px; }
.brand{ color:#fff; font-family: 'Montserrat', sans-serif; font-weight:700; letter-spacing:.4px; }
.menu{ display:flex; list-style:none; gap: 16px; margin:0; padding:0; }
.menu a{ color:#fff; font-weight:500; }
.menu a:hover{ color: var(--accent); }

/* Right side controls */
.nav-right{ display:flex; align-items:center; gap:10px; }
.btn-lang{
  appearance:none; border:1px solid rgba(255,255,255,.25); background: transparent; color:#fff;
  padding:.4rem .7rem; border-radius: 999px; font-weight:700; letter-spacing:.4px; cursor:pointer;
  transition:.18s;
}
.btn-lang:hover{ border-color:#fff; }

/* Mobile nav */
.nav-toggle{ display:none; background:none; border:0; cursor:pointer; }
.nav-toggle span{ display:block; width:24px; height:2px; background:#fff; margin:5px 0; transition:.2s; }
.nav-toggle.open span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2){ opacity:0; }
.nav-toggle.open span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 980px){
  .nav .wrap{ flex-wrap: wrap; }
}

@media (max-width: 820px){
  .nav-toggle{ display:block; }
  .menu{ position: absolute; inset: 56px 0 auto 0; background: rgba(0,0,0,.98); flex-direction:column; padding:16px; border-bottom:1px solid rgba(255,255,255,.08); transform-origin: top; transform: scaleY(0); transition:.18s;
    max-height: 60vh; overflow:auto; }
  .menu.open{ transform: scaleY(1); }
}

/* =========== NEW: LANG SWITCHER =========== */
.lang-switch{
  --sw-bg: rgba(255,255,255,.10);
  --sw-ink: #e7f5f0;
  --sw-pill: #1abc9c;
  position: relative;
  display: inline-grid;
  grid-auto-flow: column;
  align-items: center;
  gap: 0;
  padding: 4px;
  border-radius: 999px;
  background: var(--sw-bg);
  border: 1px solid rgba(255,255,255,.14);
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.18);
  isolation: isolate;
}
.lang-switch .lang-btn{
  position: relative;
  z-index: 1;
  min-width: 46px;
  padding: .35rem .7rem;
  border: 0;
  background: transparent;
  color: var(--sw-ink);
  font-weight: 800;
  font-family: 'Montserrat', sans-serif;
  letter-spacing: .6px;
  cursor: pointer;
  border-radius: 999px;
  line-height: 1;
  opacity: .8;
  transition: opacity .18s ease, transform .18s ease;
}
.lang-switch .lang-btn.is-active{
  opacity: 1;
  transform: translateY(-0.5px);
}
.lang-switch .lang-pill{
  position: absolute;
  inset: 4px;
  width: calc(50% - 4px);
  height: calc(100% - 8px);
  border-radius: 999px;
  background: linear-gradient(180deg, var(--sw-pill), #109e83);
  box-shadow: 0 6px 18px rgba(0,0,0,.25), inset 0 1px 0 rgba(255,255,255,.2);
  transform: translateX(0);
  transition: transform .22s cubic-bezier(.2,.8,.2,1);
}

/* =====================
   HERO
===================== */
.hero{
  background-image: linear-gradient(315deg, var(--hero-a) 0%, var(--hero-b) 100%);
  color:#fff;
  padding: clamp(48px, 6vw, 88px) 0;
  position: relative;
  overflow:hidden;
}
.hero:before{
  content:""; position:absolute; inset:-10% -10% auto -10%;
  height: 60%;
  background: radial-gradient(260px 140px at 0% -10%, rgba(26,188,156,.12), transparent 60%),
              radial-gradient(340px 200px at 110% 10%, rgba(255,255,255,.08), transparent 65%);
  pointer-events:none;
}
.hero-grid{
  display:grid; grid-template-columns: 1.15fr .85fr; gap: var(--gap); align-items:center;
}
.hero-photo img{ border-radius: 50%; width: clamp(220px, 26vw, 320px); margin-inline:auto; box-shadow: 0 12px 40px rgba(0,0,0,.35); }
.hero-text p{ max-width: 60ch; }
.hero-cta{ display:flex; gap: 10px; flex-wrap: wrap; margin-top: 14px; }

.btn{
  display:inline-flex; align-items:center; gap:8px;
  border-radius: 999px; padding: .7rem 1.1rem; font-weight: 700; font-family:'Montserrat', sans-serif;
  border: 2px solid transparent; transition:.2s;
}
.btn i{ font-size: 1.05rem; }
.btn-primary{ background: var(--accent); color:#fff; }
.btn-primary:hover{ filter: brightness(.95); text-decoration:none; }
.btn-ghost{ background: transparent; border-color: rgba(255,255,255,.3); color:#fff; }
.btn-ghost:hover{ border-color: #fff; text-decoration:none; }

.scroll-down{ position:absolute; bottom: 18px; left:50%; transform:translateX(-50%); }
.scroll-down i{ font-size: 1.8rem; color: var(--accent); animation: bounce 2s infinite; }
@keyframes bounce{ 0%,100%{ transform: translateY(0) } 50%{ transform: translateY(-10px) } }

@media (max-width: 980px){
  .hero-grid{ grid-template-columns: 1fr; text-align:center; }
  .hero-text p{ margin-inline:auto; }
}

/* =====================
   SECTION HEADER
===================== */
.section{ padding: clamp(42px, 6vw, 72px) 0; }
.section-gray{ background: var(--paper-2); }
.section-head{ text-align:center; margin-bottom: clamp(16px, 3vw, 28px); }
.section-head .legend{ color:#556; font-size:.95rem; }
.section-head h2{
  position:relative; display:inline-block; padding-bottom:.4rem;
}
.section-head h2::after{
  content:""; position:absolute; left:50%; transform:translateX(-50%); bottom:-8px;
  width:72px; height:3px; border-radius:6px; background: var(--accent);
  box-shadow: 0 4px 14px rgba(26,188,156,.35);
}

/* =====================
   SKILLS
===================== */
.skills-grid{
  display:grid; grid-template-columns: repeat(12, minmax(0,1fr)); gap: var(--gap);
}
.card{
  background:#fff; border: 1.5px solid rgba(0,49,83,.12); border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(0,0,0,.06);
  padding: clamp(14px, 1.4vw, 18px);
}
.card-skill{ grid-column: span 4; }
.card-big{ grid-column: span 6; }
@media (max-width: 1024px){
  .card-skill{ grid-column: span 6; }
  .card-big{ grid-column: span 12; }
}
@media (max-width: 640px){
  .card-skill, .card-big{ grid-column: span 12; }
}

.card-title{
  display:flex; align-items:center; gap:.6rem; margin: 0 0 .6rem; font-weight:700;
}
.card-title i{ color:#003153; }
.pills{ display:flex; flex-wrap:wrap; gap:8px; }
.pill{ display:inline-flex; align-items:center; gap:.35rem; padding:.32rem .6rem; border-radius:999px; background:#fff; border:1px solid rgba(0,49,83,.10); box-shadow: 0 1px 2px rgba(0,0,0,.05); font-size:.88rem; }
.pill:hover{ transform: translateY(-1px); box-shadow: 0 6px 16px rgba(0,0,0,.08); }

.skill-list{ list-style:none; margin: 0; padding:0; display:flex; flex-direction:column; gap:.5rem; }
.skill-list li{ display:flex; align-items:center; justify-content:space-between; gap:.75rem; padding:.3rem .4rem; border-radius:10px; }
.skill-list li:hover{ background:#eef6f4; }
.skill-list li > span:first-child{ display:flex; align-items:center; gap:.45rem; }

.level{ display:inline-flex; gap:.35rem; margin-left:auto; }
.level .dot{ width:10px; height:10px; border-radius:50%; border:2px solid var(--accent); background: var(--accent); }
.level.l2 .dot:nth-child(3){ opacity:.3; }
.level.l1 .dot:nth-child(2), .level.l1 .dot:nth-child(3){ opacity:.3; }

/* simple reveal */
.reveal{ opacity: 0; transform: translateY(12px); transition: .5s ease; }
.reveal.in{ opacity: 1; transform: translateY(0); }

/* =====================
   PROJECTS
===================== */
.project-row{
  --imgH: var(--img-M);
  display:grid; grid-template-columns: 2fr 1fr; grid-template-areas: "media info";
  gap: var(--gap); align-items: start;
  margin-bottom: clamp(18px, 3.4vw, 34px);
}
.project-row[data-img="XS"]{ --imgH: var(--img-XS); }
.project-row[data-img="S"] { --imgH: var(--img-S); }
.project-row[data-img="M"] { --imgH: var(--img-M); }
.project-row[data-img="L"] { --imgH: var(--img-L); }

.project-row.alt{ grid-template-columns: 1fr 1.05fr; }
.project-media{ border-radius: var(--radius); overflow:hidden; }
.project-info h3{ margin: .15rem 0 .35rem; font-size: clamp(1.1rem, 1.2vw + 1rem, 1.6rem); }
.project-info .role{ margin:.15rem 0 .5rem; color: var(--muted); font-style: normal; font-weight:500; }
.tags{ display:flex; flex-wrap:wrap; gap:8px; margin-top:.35rem; }
.tag{ display:inline-block; font-size:.86rem; padding:.25rem .55rem; border-radius:999px; background:#eef6f4; border:1px solid rgba(0,0,0,.06); }

/* mobile stacking */
@media (max-width: 860px){
  .project-row, .project-row.alt{ grid-template-columns: 1fr; }
}

/* =====================
   FOOTER
===================== */
.footer{ background: #1b1b1b; color:#fff; }
.footer a{ color: var(--accent); }
.footer .contact-grid{ display:flex; gap: 18px 28px; flex-wrap: wrap; justify-content:center; margin: 6px 0 8px; }
.footer .copyright{ text-align:center; color:#d2d2d2; margin: .6rem 0 0; font-size:.95rem; }

/* =====================
   UTILITIES
===================== */
.mt-36{ margin-top: 36px; }

.project-row .project-media{ grid-area: media; border-radius: var(--radius); overflow:hidden; }
.project-row .project-info{ grid-area: info; }

.project-row.alt{ grid-template-columns: 1fr 2fr; grid-template-areas: "info media"; }

.project-media img{
  display:block;
  width: 100%;
  height: auto;
  max-height: var(--maxH, none);
  object-fit: contain;
}

.project-row{ margin-bottom: clamp(18px, 3.4vw, 34px); }
.project-row[data-img="XS"] .project-media img{ --maxH: 260px; }
.project-row[data-img="S"]  .project-media img{ --maxH: 380px; }
.project-row[data-img="M"]  .project-media img{ --maxH: 520px; }
.project-row[data-img="L"]  .project-media img{ --maxH: 680px; }

/* Anchor offset for sticky nav */
[id]{ scroll-margin-top: 80px; }

/* ===== Steam button for pro projects ===== */
.project-actions{ margin-top: .6rem; display:flex; gap:.5rem; flex-wrap:wrap; }
.btn-steam{
  background: #171a21;
  color:#fff;
  border-color: rgba(0,0,0,.2);
}
.btn-steam:hover{ filter: brightness(1.05); text-decoration:none; transform: translateY(-1px); }

/* Steam-like CTA button */
.project-info { position: relative; }
.project-actions{ margin-top: 1rem; display: flex; flex-wrap: wrap; gap: .6rem; }
.btn-steAM { /* typo guard if any old class sneaks in */ all: unset; }

.btn-steam{
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: .65rem 1.1rem;
  border-radius: 9999px;
  font-weight: 600;
  line-height: 1;
  background: linear-gradient(180deg,#1b2838 0%, #171a21 60%, #0e141b 100%);
  color: #c7d5e0;
  border: 1px solid rgba(0,0,0,.6);
  box-shadow: 0 2px 10px rgba(0,0,0,.25), inset 0 1px 0 rgba(255,255,255,.06);
  text-decoration: none;
  transform: translateZ(0);
  transition: transform .12s ease, filter .12s ease, box-shadow .12s ease;
  letter-spacing: .2px;
}
.btn-steam:hover{
  filter: brightness(1.06);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(0,0,0,.28), inset 0 1px 0 rgba(255,255,255,.08);
}
.btn-steam:active{
  transform: translateY(0);
  filter: brightness(.98);
  box-shadow: 0 2px 8px rgba(0,0,0,.25), inset 0 1px 0 rgba(255,255,255,.05);
}

@media (max-width: 640px){
  .project-actions{ gap: .8rem; }
  .btn-steam{ width: 100%; justify-content: center; }
}

.project-info.flex-col, .project-info .flex-col{
  display: flex;
  flex-direction: column;
}
.project-info.flex-col .project-actions{ margin-top: auto; }

/* =====================
   MOBILE REFINEMENTS
===================== */
@media (max-width: 1020px){
  .menu{ display:none; } /* hide desktop menu */
}
@media (max-width: 1020px){
  .menu.open{ display:flex; } /* show when toggled */
}
@media (max-width: 860px){
  .project-row, .project-row.alt{
    grid-template-columns: 1fr;
    grid-template-areas:
      "media"
      "info";
    gap: clamp(12px, 3.5vw, 20px);
  }
  .project-info h3{ margin-top: .65rem; }
  .project-info{ padding-inline: 4px; }
}

/* Place language switch neatly on small screens */
@media (max-width: 820px){
  .nav-right{ width: 100%; justify-content: space-between; }
  .lang-switch{ margin-left: auto; }
}

@media (max-width: 640px){
  html, body{ overflow-x: hidden; }

  .project-row[data-img="XS"] .project-media img{ --maxH: 340px; }
  .project-row[data-img="S"]  .project-media img{ --maxH: 540px; }
  .project-row[data-img="M"]  .project-media img{ --maxH: 640px; }
  .project-row[data-img="L"]  .project-media img{ --maxH: 760px; }

  .project-actions{ gap: .9rem; }
}

/* =====================
   MOBILE FIXES (2025-11-07)
===================== */
@media (max-width: 640px){
  .hero-photo{ display:none !important; }
  .project-row,
  .project-row.alt{
    background: #fff;
    border: 1px solid rgba(0,49,83,.10);
    border-radius: var(--radius);
    box-shadow: 0 10px 24px rgba(0,0,0,.08);
    padding: 12px;
  }
  .section.section-gray #projects-pro + .project-row,
  .project-row + .project-row{
    margin-top: 18px;
  }
  .project-media{ border-radius: calc(var(--radius) - 4px); overflow: hidden; }
  .project-info{ padding-inline: 6px; }
  .project-info h3{ margin-top: .5rem; }
}


/* === PATCH: 2025-11-07 mobile lang switch placement === */

/* ===== Mobile nav layout improvements for language switcher ===== */
@media (max-width: 820px){
  .nav{ --navH: 56px; }
  .nav .wrap{
    display: grid;
    grid-template-columns: 1fr auto auto; /* brand | lang | burger */
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
  }
  /* Let children of nav-right participate in grid */
  .nav-right{ display: contents; }

  /* Brand left */
  .brand{ grid-column: 1 / 2; }

  /* Language switch sits between brand and burger */
  .lang-switch{
    grid-column: 2 / 3;
    justify-self: end;
    z-index: 1001; /* above the dropdown sheet */
  }

  /* Burger at far right */
  .nav-toggle{
    grid-column: 3 / 4;
    justify-self: end;
  }

  /* Dropdown sheet */
  .menu{
    position: fixed;
    top: var(--navH);
    left: 0; right: 0;
    background: rgba(0,0,0,.98);
    border-bottom: 1px solid rgba(255,255,255,.08);
    transform-origin: top;
    transform: scaleY(0);
    transition: .18s;
    max-height: 70vh;
    overflow: auto;
    padding: 12px 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  .menu.open{ transform: scaleY(1); }

  /* Make sure links are easy to tap */
  .menu a{ padding: 10px 2px; font-size: 1.05rem; }
}


/* === Certificates (appended by assistant) === */
/* Certificates */
.certificates-grid{
  display: flex;
  flex-wrap: wrap;               /* zawijanie na mniejszych ekranach */
  justify-content: center;       /* centracja linii poziomej (kluczowe) */
  gap: clamp(12px, 2vw, 18px);
  align-items: stretch;
  /* ogranicz szerokość kontenera, aby elementy nie rozciągały się zbytnio */
  max-width: 1200px;
  margin: 0 auto;                /* wycentrowanie kontenera względem strony */
  padding: 0 12px;
}
.cert-card{
  background: linear-gradient(180deg, #ffffff, #fbfdfe);
  flex: 0 1 500px;               /* preferowana szerokość: 300px, ale może się zmniejszyć */
  max-width: 560px;              /* ograniczenie maksymalnej szerokości karty */
  width: 100%;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(0,49,83,0.06);
  box-shadow: 0 8px 20px rgba(3,22,34,0.04);
  min-height: 160px;
  display:flex;
}
.cert-link{ display:block; width:100%; height:100%; }
.cert-img{
  height:100%; display:block; object-fit:cover; object-position:center;
  transition: transform .35s ease, filter .25s ease;
}
.cert-photo .cert-img{ background: #f5f7f8; }
.cert-placeholder{ display:flex; align-items:center; justify-content:center; padding: 18px; }
.cert-placeholder-inner{ display:flex; flex-direction:column; align-items:center; gap:10px; color:#888; }
.cert-placeholder-inner svg{ opacity:.85; }
.cert-footnote{ margin-top: 12px; text-align:center; font-size:.95rem; }

@media (min-width: 920px){
  .cert-card{ min-height: 200px; }
}
@media (max-width: 920px){
  .certificates-grid{ grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px){
  .certificates-grid{ grid-template-columns: 1fr; }
  .cert-card{ min-height: 160px; }
  .cert-footnote{ font-size: .92rem; padding: 0 6px; }
}
.cert-link:focus{ outline: 3px solid rgba(26,188,156,0.18); outline-offset: 4px; border-radius: 8px; }
.cert-img{ aspect-ratio: 16 / 10; }