/* ==========================================================================
   Fonts
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Source+Code+Pro:ital,wght@0,200..900;1,200..900&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Source+Sans+3:ital,wght@0,200..900;1,200..900&display=swap');
@import url('https://fonts.googleapis.com/css2?family=PT+Sans:ital,wght@0,400;0,700;1,400;1,700&display=swap');

/* ==========================================================================
   CSS Custom Properties
   ========================================================================== */
:root {
  /* Colors */
  --color-text-primary: #3A3A3B;
  --color-text-secondary: #797979;
  --color-text-muted: #888888;
  --color-text-faded: #696969;
  --color-accent: #ae2a4c;
  --color-accent-alt: #a0445c;
  --color-link: #2f4db5;
  --color-bg: #fcfffa;
  --color-button-details-text: #5d5d5e;
  --color-button-details-bg: #ecece1;
  --color-button-details-border: #a4a39d;
  --color-button-zoom-text: #fcfffa;
  --color-button-zoom-bg: #a2b1cf;
  --color-button-zoom-border: #747f95;

  /* Typography */
  --font-primary: Verdana, sans-serif;
  --font-monospace: "Source Code Pro", monospace;
  --font-heading: "Source Sans 3", Verdana, sans-serif;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.8rem;
  --spacing-xl: 3rem;
}

/* ==========================================================================
   Base Styles
   ========================================================================== */
body {
  font-family: var(--font-primary);
  font-size: 16px;
  color: var(--color-text-primary);
  line-height: 1.25em;
  margin: 0;
  padding: 0;
  hyphens: manual;
  background: var(--color-bg);
}

/* ==========================================================================
   Typography
   ========================================================================== */
h2 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 550;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

p {
  margin-top: 0.47rem;
  margin-bottom: 0;
}

i {
  font-size: 1rem;
}

a {
  color: var(--color-link);
  text-underline-offset: 1.5pt;
}

/* ==========================================================================
   Layout
   ========================================================================== */
.container {
  width: 92.5%;
  margin: 0 auto;
  padding-top: 20px;
}

.container p:first-child {
  margin-top: 0;
}

/* ==========================================================================
   Header / Logo
   ========================================================================== */
.svg-logo {
  width: 225px;
  height: 68.88px;
  margin: var(--spacing-md) auto 0 0;
  display: block;
}

/* ==========================================================================
   Schedule Components
   ========================================================================== */
.schedule-item {
  margin-top: 0.9rem;
  margin-left: -0.05rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

/* Event metadata styling */
.event-date {
  display: block;
}

.event-location {
  color: var(--color-text-secondary);
  font-family: var(--font-monospace);
  font-size: 0.97rem;
  font-weight: 425;
}

.event-location-primary {
  line-height: 0.95;
  padding-bottom: 0.25rem;
  padding-top: 0.15rem;
}

.event-location-secondary {
  line-height: 0.95;
  padding-bottom: 0.2rem;
}

.event-presenter {
  margin-top: 0.1rem;
}

.event-title {
  font-style: italic;
  margin-top: 2pt;
}

.event-links {
  margin-top: 4pt;
}

/* Collaboration note styling */
.collaboration-note {
  font-size: 0.9rem;
  line-height: 1.1rem;
  color: var(--color-text-faded);
  hyphens: manual;
  margin-top: 0;
  margin-bottom: 0;
}

.event-detail .collaboration-note {
  font-weight: normal;
  font-size: 1rem;
  padding-top: 2pt;
  line-height: 1.15rem;
  margin-bottom: -1pt;
}

/* Time and Date Styles */
.time {
  text-transform: uppercase;
  color: var(--color-accent);
  font-size: 0.95rem;
  letter-spacing: 0.055rem;
  font-family: var(--font-monospace);
  font-weight: 450;
}

.old-time {
  text-transform: uppercase;
  color: var(--color-accent-alt);
  font-size: 0.95rem;
  letter-spacing: 0.055rem;
  font-family: var(--font-monospace);
  font-weight: 450;
}

.room {
  word-spacing: -0.4em;
}

/* Place and Presenter Rows */
.place-row {
  color: var(--color-text-secondary);
  font-family: var(--font-monospace);
  font-size: 0.97rem;
  font-weight: 425;
}

.title-row {
  font-style: italic;
}

/* Location Name Variants */
.nytud-desktop {
  font-size: 0.95em;
  margin-top: -0.1em;
  color: var(--color-text-muted);
  letter-spacing: 0.2pt;
  font-family: var(--font-monospace);
  font-weight: 450;
  display: none;
}

.nytud-mobile {
  font-size: 0.95em;
  color: var(--color-text-muted);
  letter-spacing: 0.2pt;
  font-family: var(--font-monospace);
  font-weight: 450;
  word-spacing: -0.3em;
  display: inline;
}

.nytk-name-full {
  display: none;
}

.nytk-name-short {
  display: inline;
  word-spacing: -0.3rem;
}

.link-to-details {
  text-align: right;
}

/* ==========================================================================
   Buttons and Links
   ========================================================================== */
.link-text {
  font-family: var(--font-monospace);
  text-transform: lowercase;
  font-style: normal;
  letter-spacing: 0.01rem;
  font-size: 0.95rem;
  line-height: 0.95rem;
  font-weight: normal;
  color: var(--color-accent);
  text-decoration: none;
}

.link-arrow {
  vertical-align: 20pt;
}

.link-button2 {
  display: inline;
  padding: 0.75pt 4pt 2.25pt 4pt;
  border-radius: 3px;
  text-decoration: none;
  margin-bottom: -0.5rem;
  font-size: 0.75rem;
  line-height: 0.1;
  vertical-align: 1pt;
}

.link-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 3px;
  text-decoration: none;
  font-size: 0rem;
  vertical-align: middle;
}

.link-button.details {
  padding: 0rem 0.3rem 0rem 0.33rem;
  color: var(--color-button-details-text);
  background-color: var(--color-button-details-bg);
  border: 1pt solid var(--color-button-details-border);
}

.link-button.zoom {
  padding: 0rem 0.3rem 0rem 0.33rem;
  color: var(--color-button-zoom-text);
  background-color: var(--color-button-zoom-bg);
  border: 1pt solid var(--color-button-zoom-border);
}

.link-button-text {
  font-family: "Source Sans 3";
  text-transform: lowercase;
  font-style: normal;
  font-weight: 400;
  font-size: 0.85rem;
  letter-spacing: 0.01rem;
  vertical-align: 0pt;
}

.link-button-arrow {
  font-family: "Source Code Pro";
  text-transform: lowercase;
  font-style: normal;
  font-weight: 450;
  font-size: 0.85rem;
  line-height: 1.2rem;
}

/* ==========================================================================
   Footer / Impressum
   ========================================================================== */
.impr-list {
  margin-top: 0.2rem;
  margin-bottom: 0.3rem;
  margin-left: -0.5rem;
}

li:not(.impr-list:first-child) {
  margin-top: 0.1rem;
}

/* Footer Logos */
.elte-nytk-logo {
  width: 160px;
  height: 33px;
  margin: var(--spacing-xl) auto 0 auto;
  display: block;
  opacity: 0.775;
}

.elte-ik-logo {
  width: 185px;
  height: 51.98px;
  padding-right: 0.6rem;
  margin: var(--spacing-md) auto 4rem auto;
  display: block;
}

/* ==========================================================================
   Event Detail Page Styles
   ========================================================================== */

/* Logo variants for event pages - only dim when inside a link (event pages) */
a .svg-logo {
  opacity: 0.7;
}

a .svg-logo:hover {
  opacity: 1;
}

/* Alternative logo styles (not currently used but kept for future use) */
.text-logo {
  font-size: 2.3rem;
  font-weight: normal;
  font-family: "Trebuchet MS";
  margin-top: 1.9rem;
  margin-bottom: 0.1rem;
  margin-left: 0.07rem;
}

.subtitle {
  font-size: 0.9rem;
  font-family: "Andale Mono";
  line-height: 1rem;
  word-spacing: -0.2rem;
}

.tracked-m {
  letter-spacing: 0.1rem;
}

/* Old logo styles (not currently used but kept for future use) */
.logo {
  width: 250px;
  height: 96.58px;
  display: block;
  margin: 30px auto 40px 0;
}

.top-hun-ren-nytk-logo {
  width: 150px;
  height: 23.7px;
  margin: 0 auto var(--spacing-sm) 0;
  display: inline;
  opacity: 0.7;
}

.top-elte-ik-logo {
  width: 125px;
  margin: 0.2rem 0 var(--spacing-sm) auto;
  display: inline;
  opacity: 0.7;
}

/* Footer logo variant for event pages */
.hun-ren-nytk-logo {
  width: 160px;
  height: 33px;
  margin: var(--spacing-xl) auto 0 auto;
  display: block;
  opacity: 0.775;
}

/* Event detail page grid layout */
.single-schedule {
  margin-top: 2rem;
  hyphens: manual;
}

.event-detail {
  margin-top: 0.8rem;
  margin-left: -0.05rem;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

/* Event detail specific typography */
.presenter {
  font-family: "PT Sans";
  font-size: 1.18rem;
  line-height: 1.1rem;
  font-weight: bold;
}

.title {
  font-family: "PT Sans";
  font-size: 1.24rem;
  font-style: italic;
  font-weight: normal;
  line-height: 1.15;
  padding-top: 0.2em;
  padding-bottom: 0.6rem;
}

/* Event detail time styling - slightly different from list view */
.event-detail .time {
  text-transform: uppercase;
  color: #99374d;
  font-size: 0.95rem;
  letter-spacing: 0.04rem;
  font-family: var(--font-monospace);
  font-weight: 425;
  word-spacing: -0.1rem;
  margin-bottom: 0.1rem;
}

/* Event detail place row - slightly different from list view */
.event-detail .place-row {
  color: #515154;
  font-family: var(--font-monospace);
  font-size: 0.95rem;
  font-weight: 425;
  word-spacing: -0.1rem;
}

.event-detail .place-row-primary {
  line-height: 0.95;
  padding-bottom: 0.25rem;
}

.event-detail .place-row-secondary {
  line-height: 0.95;
  padding-bottom: 0.25rem;
}

.event-detail .place-row-tertiary {
  line-height: 0.95;
  padding-bottom: 0.25rem;
}

/* Room spacing variants */
.room-2 {
  word-spacing: -0.2em;
}

/* Map link styling */
.map-link {
  color: #2f4db5e6;
}

/* Abstract section styling */
.abstract {
  hyphens: manual;
  line-height: 1.35rem;
}

.abstract-heading {
  margin-top: 1.2rem;
  display: flex;
}

/* Keywords styling */
.keywords {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 550;
  margin-top: 1.8rem;
  margin-bottom: var(--spacing-sm);
}

.keywords-inline {
  margin-top: var(--spacing-md);
}

/* Recommended literature section */
.rec-literature {
  hyphens: manual;
}

/* Inline list for keywords or references */
.inline-list {
  margin-top: 0.15rem;
  margin-bottom: 0.15rem;
  margin-left: -0.5rem;
}

li:not(.inline-list:first-child) {
  margin-top: 0.075rem;
}

/* Indirect reference styling */
.indir-ref {
  color: #808080;
}

/* Subscript styling for references */
p sub {
  font-size: 0.75em;
  line-height: 1;
  vertical-align: baseline;
  position: relative;
  bottom: -0.2em;
}

/* Slides link styling (not currently used but kept for future use) */
.slides-text {
  font-family: "Source Sans 3";
  text-transform: lowercase;
  font-weight: 400;
  font-size: 0.9rem;
  letter-spacing: 0.01rem;
}

.slides-link {
  display: inline-block;
  margin-left: auto;
  padding: 1.5px 5px;
  line-height: 1.2;
  border-radius: 3px;
  text-decoration: none;
  color: var(--color-text-primary);
  background-color: var(--color-button-details-bg);
  vertical-align: 0;
  font-size: 0.75rem;
  word-spacing: 0.1rem;
  text-align: right;
  margin-bottom: 0;
}

/* ==========================================================================
   Accessibility
   ========================================================================== */

/* Skip to main content link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-accent);
  color: var(--color-bg);
  padding: 8px;
  text-decoration: none;
  z-index: 100;
  font-weight: bold;
}

.skip-link:focus {
  top: 0;
}

/* Focus states for better keyboard navigation - only show on keyboard navigation, not mouse clicks */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.link-button:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
}

/* Ensure sufficient color contrast for links */
.link-button:hover .link-button-word {
  text-decoration: underline;
  text-underline-offset: 1.5pt;
  text-decoration-thickness: 0.6pt;
}

.link-button:hover {
  filter: brightness(0.9);
  transition: filter 0.2s ease;
}

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

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  a {
    text-decoration: underline;
  }

  .link-button {
    border-width: 2pt;
  }
}

/* ==========================================================================
   Media Queries
   ========================================================================== */
@media (min-width: 550px) {
  .container {
    width: 500px;
  }

  .nytk-name-full {
    display: inline;
  }

  .nytk-name-short {
    display: none;
  }

  .zoom-link {
    display: inline-block;
    padding-top: 8px;
    padding-bottom: 8.5px;
  }
}