/* ==========================================================================
   Datavetenskapsföreningen — site stylesheet
   A refined Y2K look in layered shades of purple.

   Contents
     1. Colours & settings
     2. Fonts
     3. Basics
     4. Page layout
     5. Header & scrolling text
     6. Sidebar navigation
     7. Panels
     8. Welcome panel
     9. Lists (events / updates)
    10. Contact page
    11. Footer
    12. Small screens & reduced motion
   ========================================================================== */


/* 1. Colours & settings
   ------------------------------------------------------------------------ */

:root {
  /* Backgrounds, darkest to lightest */
  --site-bg:            oklch(0.135 0.025 315);
  --site-footer:        oklch(0.17  0.028 315);
  --site-navbar:        oklch(0.20  0.04  315);
  --site-sidebar:       oklch(0.215 0.045 315);
  --site-main:          oklch(0.28  0.065 315);

  /* Panel surfaces */
  --site-recess:          oklch(0.145 0.026 310 / 88%);
  --site-panel:           oklch(0.19  0.035 315 / 96%);
  --site-panel-raised:    oklch(0.245 0.048 310 / 97%);
  --site-panel-highlight: oklch(0.31  0.065 315 / 60%);

  /* Text */
  --site-text:         oklch(0.91 0.025 310);  /* normal text        */
  --site-navbar-text:  oklch(0.73 0.07  310);  /* muted text         */
  --site-navbar-hover: oklch(0.94 0.055 320);  /* text on hover      */
  --site-accent:       oklch(0.81 0.115 315);  /* links & highlights */

  /* Lines, glows and shadows */
  --site-border:      oklch(0.61 0.09 315 / 60%);
  --site-border-soft: oklch(0.9  0.06 310 / 26%);
  --site-glow:        oklch(0.66 0.16 315 / 12%);
  --site-shadow:      oklch(0.08 0.02 315 / 65%);

  /* Shown if the header picture fails to load */
  --site-header-fallback: oklch(0.40 0.19 320);

  /* Shades used for the glossy bars */
  --site-link-light:  oklch(0.345 0.067 315);
  --site-link-mid:    oklch(0.285 0.058 315);
  --site-link-edge:   oklch(0.225 0.047 315);
  --site-link-base:   oklch(0.19  0.037 315);
  --site-title-light: oklch(0.40  0.08  315);
  --site-title-base:  oklch(0.27  0.06  315);

  /* Gradients built from the shades above */
  --site-gradient-link:  linear-gradient(var(--site-link-light) 0%, var(--site-link-mid) 48%,
                                         var(--site-link-edge) 50%, var(--site-link-base) 100%);
  --site-gradient-title: linear-gradient(var(--site-title-light), var(--site-title-base));
  --site-gradient-panel: linear-gradient(135deg, var(--site-panel-highlight), transparent 65%);

  /* Pictures */
  --site-bg-image:     url("assets/background2.jpg");
  --site-header-image: url("assets/header2.jpg");

  /* Shape & type */
  --site-radius:     4px;
  --site-font:       "MS UI Gothic", "MS UI Gothic W", "Times New Roman", Times, serif;
  --site-serif:      "Times New Roman", Times, serif;
  --site-title-font: "Tangerine", "Times New Roman", serif;
}


/* 2. Fonts
   ------------------------------------------------------------------------ */

@font-face {
  font-family: Tangerine;
  font-weight: 400;
  font-display: swap;
  src: url("assets/tangerine-400.woff2");
}

@font-face {
  font-family: Tangerine;
  font-weight: 700;
  font-display: swap;
  src: url("assets/tangerine-700.woff2");
}


/* 3. Basics
   ------------------------------------------------------------------------ */

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--site-font);
}

h1,
h2 {
  margin: 0;
  font-size: inherit;
  font-weight: normal;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s;
}

a:hover {
  color: var(--site-navbar-hover);
  transition: color 0.1s;
}

hr {
  border: none;
  border-bottom: 1px dashed var(--site-border);
  margin: 4px 8px;
}

i {
  color: var(--site-navbar-text);
}

strong {
  color: var(--site-accent);
  font-weight: normal;
}

::selection {
  background: var(--site-glow);
  color: var(--site-text);
}


/* 4. Page layout
   ------------------------------------------------------------------------ */

.site-root {
  min-height: 100vh;
  padding: 0 8px 4vh;
  font-size: 13px;
  color: var(--site-text);
  background: var(--site-bg) var(--site-bg-image) center / cover fixed no-repeat;
}

.site-container {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

/* Sidebar on the left, panels on the right */
.site-content {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 5px;
}

.site-panels {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
}

/* The shared glossy frame around every box */
.site-header,
.panel,
.nav-box,
.nav-info,
.site-footer {
  border: 1px solid var(--site-border);
  border-radius: var(--site-radius);
  box-shadow:
    inset 0  1px 0 var(--site-border-soft),
    inset 0 -1px 0 var(--site-shadow),
    0 0 0 1px var(--site-glow),
    0 3px 12px var(--site-shadow);
}


/* 5. Header & scrolling text
   ------------------------------------------------------------------------ */

.site-header {
  position: relative;
  overflow: hidden;
  height: 134px;
  background: var(--site-header-fallback) var(--site-header-image) center / cover no-repeat;
  border-top: none;
  border-top-left-radius: 0;
  border-top-right-radius: 0;
}

/* The strip has no fill of its own: the text sits straight on the photo.
   To stay readable over the bright sky, each letter carries a thin dark
   outline (four offsets) plus a soft glow. */
.site-marquee-wrap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  overflow: hidden;
  background: transparent;
}

.site-marquee {
  display: inline-block;
  white-space: nowrap;
  font-family: var(--site-serif);
  font-style: italic;
  text-shadow:
    -1px -1px 0 var(--site-bg),
     1px -1px 0 var(--site-bg),
    -1px  1px 0 var(--site-bg),
     1px  1px 0 var(--site-bg),
     0 0 6px var(--site-bg),
     0 0 14px var(--site-shadow);
  animation: site-scroll 40s linear infinite;
}

@keyframes site-scroll {
  from { transform: translateX(100%); }
  to   { transform: translateX(-100%); }
}


/* 6. Sidebar navigation
   ------------------------------------------------------------------------ */

.site-nav {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.nav-box {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.nav-gif-wrap {
  display: flex;
  justify-content: center;
  padding: 4px 0 3px;
  background: var(--site-sidebar);
  border-bottom: 1px solid var(--site-border);
}

.nav-gif {
  display: block;
  width: 140px;
  height: 62px;
  object-fit: cover;
}

/* Section headings: "navigation", "links" */
.nav-label {
  height: 20px;
  padding: 1px 5px;
  font-family: var(--site-serif);
  color: var(--site-text);
  background: var(--site-gradient-title);
  text-shadow: 0 1px 1px var(--site-shadow);
  box-shadow: inset 0 1px 0 var(--site-border-soft);
  border-bottom: 1px solid var(--site-border);
}

.nav-link {
  display: flex;
  min-height: 28px;
  padding: 4px 4px 4px 10px;
  font-size: 14px;
  background: var(--site-gradient-link);
  box-shadow: inset 0 1px 0 var(--site-border-soft);
  border-bottom: 1px solid var(--site-border);
  transition: filter 0.2s;
}

.nav-link:last-child {
  border-bottom: none;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--site-text);
  filter: brightness(125%);
}

.nav-link:focus-visible {
  outline: 1px solid var(--site-accent);
  outline-offset: -3px;
}

/* Small "Updated / Status" box under the menu */
.nav-info {
  padding: 3px 6px;
  background: var(--site-sidebar);
}

.nav-info p {
  margin: 4px 0;
  font-size: 12px;
}


/* 7. Panels
   ------------------------------------------------------------------------ */

.panel {
  overflow: hidden;
  background: var(--site-panel);
}

.panel-title {
  padding: 3px 8px;
  color: var(--site-text);
  background: var(--site-gradient-title);
  text-shadow: 0 1px 1px var(--site-shadow);
  box-shadow: inset 0 1px 0 var(--site-border-soft);
  border-bottom: 1px solid var(--site-border);
}

.panel-body {
  padding: 4px 10px 8px;
}

.panel-body p {
  margin: 0.8em 0;
  line-height: 1.35;
}

.panel-body a {
  color: var(--site-accent);
  text-decoration: underline dotted;
}


/* 8. Welcome panel
   ------------------------------------------------------------------------ */

.welcome-panel {
  background: var(--site-gradient-panel), var(--site-panel-raised);
}

.welcome-title {
  padding: 10px 76px 0;
  text-align: center;
  font-size: 18px;
  color: var(--site-navbar-hover);
}

.welcome-body {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.welcome-text {
  flex: 1;
  min-width: 0;
}

.welcome-text p:first-child {
  margin-top: 4px;
}

.welcome-picture {
  padding-top: 8px;
}

.welcome-picture img {
  display: block;
  border: 1px solid var(--site-border);
  border-radius: 3px;
  image-rendering: pixelated;
  box-shadow: 0 0 6px var(--site-glow);
}


/* 9. Lists (events / updates)
   ------------------------------------------------------------------------ */

.log {
  list-style: none;
  margin: 0;
  padding: 4px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.log li {
  padding: 3px 6px;
  background: var(--site-recess);
  border: 1px solid var(--site-border-soft);
  border-radius: 2px;
  box-shadow: inset 0 1px 2px var(--site-shadow);
}

/* Every other row a slightly different shade */
.log li:nth-child(even) {
  background: var(--site-navbar);
}


/* 10. Contact page
   ------------------------------------------------------------------------ */

.message-page-title {
  margin: 4px 0 8px;
  text-align: center;
  font-family: var(--site-title-font);
  font-style: italic;
  font-size: 36px;
  font-weight: normal;
  line-height: 1.2;
  text-shadow: 1px 1px 0 var(--site-bg), 0 1px 3px var(--site-glow);
}


/* 11. Footer
   ------------------------------------------------------------------------ */

.site-footer {
  padding: 4px;
  text-align: center;
  font-size: 10px;
  color: var(--site-navbar-text);
  background: var(--site-footer);
}


/* 12. Small screens & reduced motion
   ------------------------------------------------------------------------ */

@media (max-width: 520px) {
  .site-content { grid-template-columns: 1fr; }
  .site-header  { height: 90px; }
  .welcome-body { flex-direction: column; align-items: center; }
  .welcome-text { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .site-marquee { animation: none; }
  .nav-link     { transition: none; }
}