@import url('variables.css');

/* CSS Reset */
html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed, 
figure, figcaption, footer, header, hgroup, 
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 100%;
  font: inherit;
  vertical-align: baseline;
}
article, aside, details, figcaption, figure, 
footer, header, hgroup, menu, nav, section {
  display: block;
}
body {
  line-height: 1;
  background: var(--color__bg__main);
  color: var(--color__text__primary);
  font-family: var(--font-body);
}
ol, ul {
  list-style: none;
}
blockquote, q {
  quotes: none;
}
blockquote:before, blockquote:after,
q:before, q:after {
  content: '';
  content: none;
}
table {
  border-collapse: collapse;
  border-spacing: 0;
}

nav {
  border-bottom: var(--border-main);
  padding: var(--nav-padding-y) var(--nav-padding-x);
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-width: 1200px;
  position: relative;
  z-index: 10;
  overflow: visible;
}
nav span {
  font-family: var(--font-heading);
  font-size: var(--nav-font-size);
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: var(--nav-letter-spacing);
}
nav .nav-items span {
  font-family: var(--font-body);
  font-size: var(--nav-item-font-size);
  text-transform: uppercase;
  letter-spacing: var(--nav-item-letter-spacing);
  padding: 0 12px;
}
nav .nav-items {
  display: flex;
  gap: 48px;
  padding-left: 24px;
}
main {
  max-width: var(--main-max-width);
  margin: 0 auto;
  padding: var(--main-padding-top) var(--main-padding-x) var(--main-padding-bottom) var(--main-padding-x);
  position: relative;
  z-index: 0;
}

/* Dropdown logic */
.dropdown {
  position: relative;
}

.dropdown-content {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 999;
  gap: 8px;
}

.dropdown.is-open .dropdown-content {
  display: grid;
}

.dropdown-content button {
  background: transparent;
  cursor: pointer;
}

.dropdown-content .icon {
  display: block;
  transition: color 200ms cubic-bezier(.16, 1, .3, 1);
}

.dropdown-content button:hover .icon,
.dropdown-content button.is-selected .icon {
  color: var(--color__hover__red);
}

.hero-section {
  margin-bottom: 128px;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-section h1 {
  font-family: var(--font-heading);
  font-size: var(--heading-size);
  font-weight: var(--heading-weight);
  text-transform: uppercase;
  letter-spacing: var(--heading-spacing);
  margin: 0;
  line-height: var(--heading-line-height);
  text-align: center;
  width: fit-content;
}
.hero-section .page-label {
  position: absolute;
  left: 32px;
  top: 42px;
  font-family: var(--font-body);
  font-size: var(--side-label-font-size);
}
.portfolio-section {
  display: flex;
  flex-direction: column;
  gap: 192px;
  align-items: center;
}
.portfolio-row {
  display: flex;
  gap: 32px;
  align-items: flex-start;
  width: 100%;
  max-width: var(--main-max-width);
}
.portfolio-row .side {
  width: 240px;
}
.portfolio-row .side div {
  font-family: var(--font-body);
  font-size: var(--side-label-font-size);
}
.portfolio-row .side .row-num {
  margin-top: 32px;
}
.portfolio-card {
  width: 784px;
  padding: 1px;
}
.portfolio-card img {
  width: 100%;
  height: 586px;
  object-fit: cover;
  opacity: 0.88;
  border: var(--border-main);
  display: block;
  transition: box-shadow 0.2s, border-color 0.2s;
}
.portfolio-card img:hover {
  box-shadow: 0 0 0 8px var(--color__bg__lines__strokes);
  border-color: var(--color__text__muted);
}
.portfolio-card .title {
  font-family: var(--font-heading);
  font-size: var(--portfolio-title-size);
  font-weight: bold;
  text-transform: uppercase;
  margin-top: 16px;
}
.portfolio-card .desc {
  font-family: var(--font-body);
  font-size: var(--portfolio-desc-size);
  margin-top: 8px;
}
footer {
  border-top: var(--border-main);
  padding: var(--nav-padding-y) var(--nav-padding-x);
  text-align: center;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--color__text__primary);
  background: var(--color__bg__main);
}
.paper-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: url('../assets/images/paper_texture.png') center center / cover repeat;
  opacity: 0.18;
}
body > *:not(.paper-bg) {
  position: relative;
  z-index: 1;
}

body.dropdown-open main {
  pointer-events: none;
}

body.dropdown-open .dropdown-content {
  pointer-events: auto;
}

/* media querie: Focus state - visible outline for keyboard users */
.theme-toggle:focus {
  outline: 2px solid var(--color__text__primary);
}

/* enhanced focus visibility on dark theme */
:root[data-theme="dark"] .theme-toggle:focus {
  outline-color: var(--color__text__primary);
}

/* Respect user's motion preference - disable animations if they prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
}