/* ================================================
   KUBAZMEDLOVA.COM – Personal Portfolio
   main.css – Global styles
   ================================================ */

@import url("https://fonts.googleapis.com/css2?family=Work+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,300;1,400&display=swap");

:root {
  --bg: #0f0e0e;
  --surface: #0f0e0e;
  --border: #282828;
  --text: #fffffa;
  --text-dim: #999999;
  --accent-red: #fd1b4c;

  --font: "Work Sans", sans-serif;

  --container-w: 80vw;

  --nav-h: 74px;
  --section-space: 9rem;

  --ease: cubic-bezier(0.25, 0, 0.1, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  height: 100%;
}

body {
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
  height: 100%;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
video {
  display: block;
  max-width: 100%;
  height: auto;
}
a {
  color: inherit;
  text-decoration: none;
}
ul,
ol {
  list-style: none;
}
button {
  background: none;
  border: none;
  cursor: pointer;
  font: inherit;
  color: inherit;
}
main {
  flex: 1;
}

/* Fluid typography – 1.2 scale, base 16px, 390px → 2560px */
h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--text);
}
h1 {
  font-size: clamp(1.8rem, 3.5vw, 2.488rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1rem;
}
h2 {
  font-size: clamp(1.5rem, 2.8vw, 2.074rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 0.75rem;
}
h3 {
  font-size: clamp(1.3rem, 2.2vw, 1.728rem);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 0.65rem;
}
h4 {
  font-size: clamp(1.1rem, 1.8vw, 1.44rem);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 0.5rem;
}
h5 {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  font-weight: 500;
  line-height: 1.4;
  margin-bottom: 0.5rem;
}
h6 {
  font-size: clamp(1rem, 1.2vw, 1.2rem);
  font-weight: 400;
  line-height: 1.6;
  margin-bottom: 0.4rem;
}
p {
  font-size: clamp(1rem, 1.2vw, 1.2rem);
  font-weight: 400;
  line-height: 1.75;
  margin-bottom: 1.25rem;
  color: var(--text-dim);
}

.container {
  width: var(--container-w);
  margin-inline: auto;
}

section {
  padding-block: var(--section-space);
}
.section--top {
  padding-top: calc(var(--nav-h) + var(--section-space));
}

.intro {
  margin-bottom: var(--section-space);
}
.project-intro {
  margin-bottom: 2rem;
}

/* ---- HEADER ---- */

header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: var(--bg);
  border-bottom: 1px solid transparent;
  transition:
    opacity 0.3s ease,
    border-color 0.3s ease;
}

header.scrolled {
  border-bottom-color: var(--border);
}
header.hidden {
  opacity: 0;
  pointer-events: none;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: var(--container-w);
  margin-inline: auto;
}

.header-inner .nav-desktop {
  order: 1;
}
.header-inner .nav__logo {
  order: 2;
}
.header-inner .hamburger {
  order: 2;
}

.page-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-dim);
  flex-shrink: 0;
  pointer-events: none;
  user-select: none;
}

.nav-desktop {
  display: flex;
  gap: 2.5rem;
  align-items: center;
}

.nav-desktop a {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  transition: color 0.2s;
}

.nav-desktop a:hover {
  color: var(--text);
}

.nav-desktop a.active,
.nav-desktop a[aria-current="page"] {
  color: #fd1b4c;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  cursor: pointer;
  background: none;
  border: none;
  color: var(--text);
  z-index: 200;
}

.hamburger svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
  display: block;
}

.nav-mobile {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--bg);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  z-index: 150;
}

.nav-mobile.active {
  display: flex;
}

.nav-mobile__close {
  position: absolute;
  top: calc((var(--nav-h) - 36px) / 2);
  right: calc((100vw - var(--container-w)) / 2);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text);
  padding: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-mobile__close:hover {
  opacity: 0.7;
}

.nav-mobile a {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  transition: color 0.2s;
}

.nav-mobile a:hover {
  color: var(--text);
}
.nav-mobile a[aria-current="page"] {
  color: #fd1b4c;
}

/* ---- FOOTER ---- */

footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
}

footer .container {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: center;
}

footer small {
  font-size: clamp(0.75rem, 0.9vw, 1rem);
  font-weight: 400;
  letter-spacing: 0.03em;
  color: var(--text-dim);
}

/* ---- FOCUS / SELECTION ---- */

:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 3px;
  border-radius: 2px;
}
::selection {
  background: var(--text);
  color: var(--bg);
}

.link--white        { color: #fffffa; transition: color 0.2s; }
.link--white:hover  { color: #999999; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---- RESPONSIVE ---- */

@media (max-width: 990px) {
  :root {
    --section-space: 5rem;
  }
  .nav-desktop {
    display: none;
  }
  .hamburger {
    display: flex;
  }
}

@media (max-width: 600px) {
  :root {
    --section-space: 4rem;
  }
}

.nav__logo {
  font-family: var(--font);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text);
  text-decoration: none;
  cursor: pointer;
  flex-shrink: 0;
}

.nav__logo:hover {
  color: var(--text);
}