/* ============================================================
   Index Page Styles — cesarsotovalero.net
   Matches site fonts: Century Supra T4 (body), Concourse T6 Tab (headings)
   Uses site CSS variables for colors and dark mode.
   ============================================================ */

/* ---------- Index subtitle override ---------- */
.intro-header .page-heading .page-subheading {
  font-size: 20px;
  font-family: "Concourse T2", "Linux Biolinum", "Cambria", "Open Sans", 'Helvetica Neue', Helvetica, Arial, sans-serif;
  line-height: 1.5;
}
@media only screen and (max-width: 768px) {
  .intro-header .page-heading .page-subheading {
    font-size: 18px;
  }
}

/* ---------- Reduce header whitespace on index ---------- */
.intro-header .page-heading h1 {
  margin-top: 0.5rem;
}
@media only screen and (max-width: 768px) {
  .intro-header .page-heading h1 {
    margin-bottom: 4px;
  }
  .intro-header .page-heading .page-subheading {
    margin-top: 0;
  }
}
.intro-header .page-heading hr.small {
  display: none;
}

/* ---------- Hero ---------- */
.index-hero {
  margin-bottom: 16px;
  margin-top: -10px;
  margin-left: 10px;
  margin-right: 10px;
}
.index-hero a {
  opacity: 0.55;
  transition: opacity 0.2s ease;
}
.index-hero a:hover,
.index-hero a:active {
  opacity: 1;
}
.index-hero-content {
  display: flex;
  align-items: flex-start;
  gap: 20px;
}
.index-hero-avatar img {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  border: 2px solid var(--panel-border-color);
}
.index-hero-text p {
  margin-bottom: 10px;
  line-height: 1.7;
}
.index-hero-social {
  margin-top: 4px;
}
@media (max-width: 768px) {
  .index-hero-content {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .index-hero {
    text-align: center;
  }
}

/* ---------- Sections ---------- */
.index-section {
  --section-accent: #777;
  margin-bottom: 48px;
  margin-left: 10px;
  margin-right: 10px;
}

/* ---------- Section accent colors ---------- */
.index-section--youtube  { --section-accent: #FF0000; }
.index-section--blog     { --section-accent: #2563EB; }
.index-section--linkedin { --section-accent: #0A66C2; }
.index-section--podcast  { --section-accent: #8B5CF6; }
.index-section--talks    { --section-accent: #E67E22; }
.index-section--papers   { --section-accent: #059669; }
.index-section--projects { --section-accent: #10B981; }

/* ---------- Section header row ---------- */
.index-section-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
  padding-bottom: 8px;
}
.index-section-header::after {
  content: "";
  flex: 1;
  height: 1px;
  background-color: var(--panel-border-color);
  order: 1;
}
.index-section-title {
  font-family: "Concourse T6 Tab", "Linux Biolinum Capitals", 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 1.15em;
  font-weight: bold;
  margin: 0;
  color: var(--main-text-color);
  flex-shrink: 0;
}

/* ---------- Card grid ---------- */
.index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.index-list-item {
  margin-bottom: 0;
}
.index-list-item a {
  display: flex;
  flex-direction: column;
  text-decoration: none !important;
  color: var(--main-text-color);
  border-radius: 8px;
  border: 1px solid #ccc;
  overflow: hidden;
  background-color: var(--card-background-color);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  height: 100%;
}
.index-list-item a:hover {
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  transform: translateY(-5px);
}

/* ---------- Card thumbnail ---------- */
.index-list-thumb {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
  flex-shrink: 0;
  filter: none;
  transition: filter 0.3s ease;
}
.index-list-item a:hover .index-list-thumb {
  filter: none;
}
/* Placeholder when no image */
.index-list-placeholder {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--panel-border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.index-list-placeholder i {
  font-size: 2em;
  color: var(--section-accent);
  opacity: 0.4;
}

/* ---------- Project logo area (square logos) ---------- */
.index-list-logo {
  width: 100%;
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: var(--card-background-color);
  padding: 0;
}
.index-list-logo img {
  max-width: 75%;
  max-height: 75%;
  object-fit: contain;
}

/* ---------- GitHub badge in stats ---------- */
.index-list-badge {
  height: 18px;
  vertical-align: middle;
  margin-right: 4px;
}

/* ---------- Card text area ---------- */
.index-list-text {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  padding: 12px 14px;
}
.index-list-title {
  font-family: "Concourse T4", "Linux Biolinum", "Cambria", "Open Sans", 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 0.88em;
  font-weight: bold;
  line-height: 1.45;
  text-decoration: none;
  text-align: center;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.index-list-item a:hover .index-list-title {
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--main-text-color);
}
.index-list-date {
  font-size: 1.5rem;
  font-family: "Concourse T3", "Cambria", "Open Sans";
  color: var(--post-meta-index-color);
  margin-top: 6px;
  line-height: 1.4;
  text-align: center;
}
.index-list-stats {
  font-size: 1.5rem;
  font-family: "Concourse T3", "Cambria", "Open Sans";
  color: var(--post-meta-index-color);
  margin-top: 4px;
  line-height: 1.4;
  text-align: center;
}
.index-list-tag {
  font-size: 1.5rem;
}

/* ---------- Dark-mode card overrides ---------- */
html[data-theme="dark"] .index-list-item a {
  border-color: rgba(255, 255, 255, 0.08);
  background-color: rgba(255, 255, 255, 0.03);
}
html[data-theme="dark"] .index-list-item a:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}
html[data-theme="dark"] .index-list-placeholder {
  background: rgba(255, 255, 255, 0.06);
}

@media only screen and (max-width: 768px) {
  /* Show header (avatar + name + subtitle) on mobile — overrides main.css hide */
  .header-hiddable {
    visibility: visible !important;
    display: block !important;
  }
  .header-image .avatar-container {
    width: 80px;
  }
  /* Card grid: single column on mobile */
  .index-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .index-list-title {
    font-size: 24px;
    line-height: 1.1;
  }

  .index-section {
    margin-left: 0;
    margin-right: 0;
  }
  .index-hero {
    margin-left: 0;
    margin-right: 0;
  }
  /* Social icons: fit all in one row on small screens */
  #list-of-social-icons {
    margin-bottom: 28px;
  }
  #list-of-social-icons li {
    padding-left: 2px;
    padding-right: 2px;
  }
  #list-of-social-icons img {
    width: 18px !important;
    height: 18px !important;
  }
}

/* ---------- Social icon brand-color hover ---------- */
#list-of-social-icons li img {
  transition: filter 0.15s ease;
}
/* LinkedIn #0A66C2 */
#list-of-social-icons li[data-brand="linkedin"]:hover img {
  filter: invert(30%) sepia(98%) saturate(1794%) hue-rotate(192deg) brightness(91%) contrast(97%);
}
/* YouTube #FF0000 */
#list-of-social-icons li[data-brand="youtube"]:hover img {
  filter: invert(12%) sepia(97%) saturate(7404%) hue-rotate(2deg) brightness(104%) contrast(114%);
}
/* GitHub #333 – stays dark, subtle brighten */
#list-of-social-icons li[data-brand="github"]:hover img {
  filter: invert(20%) sepia(0%) saturate(0%) brightness(80%) contrast(100%);
}
/* X / Twitter #000 */
#list-of-social-icons li[data-brand="x"]:hover img {
  filter: invert(0%) brightness(0%);
}
/* StackOverflow #F48024 */
#list-of-social-icons li[data-brand="stackoverflow"]:hover img {
  filter: invert(52%) sepia(78%) saturate(1539%) hue-rotate(348deg) brightness(99%) contrast(93%);
}
/* ResearchGate #00CCBB */
#list-of-social-icons li[data-brand="researchgate"]:hover img {
  filter: invert(62%) sepia(68%) saturate(497%) hue-rotate(127deg) brightness(96%) contrast(101%);
}
/* Google Scholar #4285F4 */
#list-of-social-icons li[data-brand="googlescholar"]:hover img {
  filter: invert(42%) sepia(78%) saturate(2263%) hue-rotate(209deg) brightness(99%) contrast(93%);
}
/* DBLP #004F9F */
#list-of-social-icons li[data-brand="dblp"]:hover img {
  filter: invert(19%) sepia(94%) saturate(2894%) hue-rotate(205deg) brightness(79%) contrast(107%);
}
/* ORCID #A6CE39 */
#list-of-social-icons li[data-brand="orcid"]:hover img {
  filter: invert(74%) sepia(42%) saturate(570%) hue-rotate(38deg) brightness(95%) contrast(88%);
}
/* Gmail #EA4335 */
#list-of-social-icons li[data-brand="gmail"]:hover img {
  filter: invert(29%) sepia(95%) saturate(3048%) hue-rotate(349deg) brightness(96%) contrast(89%);
}
/* RSS #FFA500 */
#list-of-social-icons li[data-brand="rss"]:hover img {
  filter: invert(67%) sepia(90%) saturate(1300%) hue-rotate(359deg) brightness(101%) contrast(106%);
}

/* Tablet: 2-column grid */
@media only screen and (min-width: 769px) and (max-width: 1024px) {
  .index-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ---------- See all link (inside header row) ---------- */
.index-see-all {
  margin: 0;
  flex-shrink: 0;
  white-space: nowrap;
  order: 2;
}
.index-see-all .list-filter {
  font-family: "Concourse T3", "Linux Biolinum", 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 13px;
  text-decoration: none !important;
  color: #808080;
  white-space: nowrap;
  display: inline-block;
  padding: 4px 12px;
  border: 1px solid #c0c0c0;
  border-radius: 6px;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.index-see-all .list-filter:hover {
  color: var(--main-text-color);
  border-color: var(--main-text-color);
  background: rgba(0, 0, 0, 0.04);
}

/* ---------- Milestones ---------- */
.index-milestones {
  position: relative;
  padding-left: 32px;
  overflow: hidden;
}
.index-milestones::before {
  content: '';
  position: absolute;
  left: 11px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--panel-border-color);
}
.index-milestone {
  display: flex;
  align-items: flex-start;
  margin-bottom: 14px;
  position: relative;
}
.index-milestone-hidden {
  display: none;
}
.index-milestone-icon {
  position: absolute;
  left: -32px;
  width: 22px;
  height: 22px;
  background: var(--button-background-color);
  color: var(--main-background-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.55rem;
  z-index: 1;
}
.index-milestone-body {
  display: flex;
  flex-direction: column;
}
.index-milestone-date {
  font-size: 0.7em;
  font-weight: bold;
  opacity: 0.45;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.index-milestone-title {
  font-size: 0.88em;
  line-height: 1.45;
}
.index-milestone-title a {
  color: var(--main-text-color);
  text-decoration: none;
}
.index-milestone-title a:hover {
  text-decoration: underline;
  text-decoration-color: var(--link-decoration-color);
}

/* ---------- Toggle button ---------- */
.index-milestones-toggle {
  margin-top: 6px;
  margin-bottom: 0;
}
.index-milestones-toggle button {
  background: none;
  border: none;
  padding: 0;
  font-family: inherit;
  font-size: 0.85em;
  color: var(--main-text-color);
  opacity: 0.6;
  cursor: pointer;
}
.index-milestones-toggle button:hover {
  opacity: 1;
  text-decoration: underline;
  text-decoration-color: var(--link-decoration-color);
}