/* ================================================================
   davidayala.me — Design System
   ================================================================ */

/* --- Custom Properties ----------------------------------------- */
:root {
  --bg:          #fafaf9;
  --bg-alt:      #f3f3f0;
  --bg-dark:     #0f0e13;
  --text:        #1c1b22;
  --muted:       #6b7280;
  --accent:      #e85d4a;
  --accent-dark: #d44a37;
  --accent-text: #b5351f;
  --border:      #e5e7eb;
  --white:       #ffffff;

  --font:        'Inter', system-ui, -apple-system, sans-serif;
  --container:   1200px;
  --radius:      0.5rem;
  --radius-lg:   0.875rem;
  --ease:        cubic-bezier(0.4, 0, 0.2, 1);
  --dur:         0.25s;
}

/* --- Reset ----------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; overflow-x: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

/* Visible focus indicator for keyboard navigation */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* --- Base Typography ------------------------------------------- */
body {
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { line-height: 1.2; font-weight: 700; color: var(--text); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: 1.2rem; }
p { margin-bottom: 1em; }
p:last-child { margin-bottom: 0; }
strong { font-weight: 600; }

/* --- Layout ---------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.section {
  padding-block: 5rem;
}

.section--alt {
  background: var(--bg-alt);
}

.section--dark {
  background: var(--bg-dark);
  color: var(--white);
}

/* --- Label (eyebrow text) -------------------------------------- */
.label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-text);
  margin-bottom: 0.6rem;
}

/* ================================================================
   BUTTONS
   ================================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.75rem;
  border-radius: 2rem;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  transition: background var(--dur) var(--ease),
              transform var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
  cursor: pointer;
  border: 1.5px solid transparent;
}

.btn--primary {
  background: var(--accent);
  color: var(--white);
  box-shadow: 0 2px 14px rgba(232, 93, 74, 0.32);
}
.btn--primary:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(232, 93, 74, 0.42);
}

.btn--ghost {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.4);
}
.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.7);
  transform: translateY(-2px);
}

.btn--outline {
  background: transparent;
  color: var(--accent-text);
  border-color: var(--accent-text);
}
.btn--outline:hover {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* ================================================================
   HERO
   ================================================================ */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--bg-dark) center/cover no-repeat;
  overflow: hidden;
}

#hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(15, 14, 19, 0.60) 0%,
    rgba(15, 14, 19, 0.20) 40%,
    rgba(15, 14, 19, 0.75) 100%
  );
}

.hero__inner {
  position: relative;
  z-index: 1;
  padding: 2rem 1.5rem;
  max-width: 700px;
}

.hero__name {
  color: var(--white);
  font-size: clamp(3rem, 9vw, 6rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 1.25rem;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.35);
}

.hero__desc {
  color: rgba(255, 255, 255, 0.87);
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  font-weight: 300;
  max-width: 580px;
  margin-inline: auto;
  margin-bottom: 0.75rem;
  line-height: 1.65;
}

.hero__quote {
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.95rem;
  font-style: italic;
  max-width: 480px;
  margin-inline: auto;
  margin-bottom: 2.5rem;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1.75rem;
}

.hero__social {
  display: flex;
  gap: 0.6rem;
  justify-content: center;
}

.hero__social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.8);
  font-size: 1rem;
  transition: background var(--dur) var(--ease),
              transform var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}
.hero__social a:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--white);
  transform: translateY(-3px);
}

.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  color: rgba(255, 255, 255, 0.58);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}
.hero__scroll::after {
  content: '';
  display: block;
  width: 1px;
  height: 3rem;
  background: rgba(255, 255, 255, 0.25);
}

/* ================================================================
   ABOUT
   ================================================================ */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.about__bio {
  text-align: left;
}
.about__bio ul {
  margin-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.about__bio li {
  position: relative;
  padding-left: 1.4rem;
  font-size: 1rem;
  line-height: 1.55;
}

.about__bio li::before {
  content: '→';
  color: var(--accent);
  font-size: 0.8rem;
  position: absolute;
  left: 0;
  top: 0.25rem;
}

.about__bio li p { margin-bottom: 0; }

.about__bio a {
  color: var(--accent-text);
  text-decoration: underline;
  text-decoration-color: rgba(181, 53, 31, 0.45);
  transition: text-decoration-color var(--dur) var(--ease);
}
.about__bio a:hover {
  text-decoration-color: var(--accent-text);
}

.about__links {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.about__link-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--white);
  transition: border-color var(--dur) var(--ease),
              transform var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}
.about__link-card:hover {
  border-color: var(--accent);
  transform: translateX(4px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.about__link-card .card-icon {
  font-size: 1.35rem;
  width: 2.25rem;
  text-align: center;
  color: var(--accent);
  flex-shrink: 0;
}

.about__link-card .card-info {
  flex: 1;
  min-width: 0;
}
.about__link-card .card-info strong {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
}
.about__link-card .card-info span {
  font-size: 0.8rem;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
}

/* ================================================================
   GALLERY (homepage)
   ================================================================ */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

.gallery-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 1;
  background: var(--bg-alt);
  display: block;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
}
.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-item__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 14, 19, 0.75) 0%, transparent 55%);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
  display: flex;
  align-items: flex-end;
  padding: 1.1rem;
}
.gallery-item:hover .gallery-item__overlay {
  opacity: 1;
}

.gallery-item__title {
  color: var(--white);
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1.3;
}

.gallery-footer {
  text-align: center;
  margin-top: 2.25rem;
}

/* ================================================================
   GALLERY LIST PAGE
   ================================================================ */
.gallery-list-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
  margin-bottom: 3rem;
}

.gallery-list-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 1;
  background: var(--bg-alt);
  display: block;
}
.gallery-list-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
}
.gallery-list-item:hover img {
  transform: scale(1.04);
}
.gallery-list-item__label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.65rem 0.875rem;
  background: linear-gradient(to top, rgba(15, 14, 19, 0.82) 0%, transparent 100%);
  color: var(--white);
  font-size: 0.82rem;
  font-weight: 500;
  transform: translateY(100%);
  transition: transform var(--dur) var(--ease);
}
.gallery-list-item:hover .gallery-list-item__label {
  transform: translateY(0);
}

/* ================================================================
   GALLERY SINGLE PAGE
   ================================================================ */
.gallery-single {
  max-width: 900px;
  margin-inline: auto;
}

.gallery-single__back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 2rem;
  transition: gap var(--dur) var(--ease);
}
.gallery-single__back:hover {
  gap: 0.7rem;
}

.gallery-single__title {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  margin-bottom: 0.4rem;
}
.gallery-single__date {
  color: var(--muted);
  font-size: 0.88rem;
  margin-bottom: 2rem;
}
.gallery-single__image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.1);
}
.gallery-single__image img {
  width: 100%;
  height: auto;
}

/* ================================================================
   TWEETS (homepage)
   ================================================================ */
.tweets-section {
  background: var(--bg-dark);
  color: var(--white);
}

.tweets-section .section-header h2 {
  color: var(--white);
}

ul.tweets {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}

ul.tweets li {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  font-size: 0.93rem;
  line-height: 1.65;
  transition: background var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}
ul.tweets li:hover {
  background: rgba(255, 255, 255, 0.09);
  transform: translateY(-2px);
}

ul.tweets li a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: rgba(232, 93, 74, 0.45);
  transition: text-decoration-color var(--dur) var(--ease);
}
ul.tweets li a:hover {
  text-decoration-color: var(--accent);
}

ul.tweets li img {
  margin-top: 0.75rem;
  border-radius: var(--radius);
  max-width: 100%;
  max-height: 220px;
  object-fit: cover;
}

.icon-pin-colored { color: rgba(232, 93, 74, 0.9); margin-right: 0.3rem; }

.timestamp {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.76rem;
  color: rgba(255, 255, 255, 0.6);
}

li.hidden { display: none; }

.tweets-footer {
  margin-top: 2rem;
  text-align: center;
}

/* ================================================================
   TWEETS LIST PAGE
   ================================================================ */
ul.section-list.tweets {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  max-width: 680px;
  margin-inline: auto;
}

ul.section-list.tweets li {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.1rem 1.25rem;
  font-size: 0.93rem;
  line-height: 1.65;
  transition: box-shadow var(--dur) var(--ease);
}
ul.section-list.tweets li:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.07);
}

ul.section-list.tweets li a {
  color: var(--accent);
}

ul.section-list.tweets span {
  display: block;
  font-size: 0.76rem;
  color: var(--muted);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

ul.section-list.tweets img {
  margin-top: 0.75rem;
  border-radius: var(--radius);
  max-width: 100%;
  max-height: 220px;
  object-fit: cover;
}

/* ================================================================
   SECTION HEADER
   ================================================================ */
.section-header {
  margin-bottom: 2.5rem;
}
.section-header h2 {
  margin-bottom: 0.4rem;
}

/* ================================================================
   PAGE HEADER (inner pages)
   ================================================================ */
.page-header {
  background: var(--bg-dark);
  padding-block: 4rem 3rem;
}

.page-header h1 {
  color: var(--white);
  font-size: clamp(1.75rem, 5vw, 3rem);
  margin-bottom: 0.75rem;
}

.page-header__nav {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.58);
}
.page-header__nav a {
  color: rgba(255, 255, 255, 0.75);
  transition: color var(--dur) var(--ease);
}
.page-header__nav a:hover {
  color: var(--accent);
}

/* ================================================================
   PAGINATION (Hugo internal template)
   ================================================================ */
.pagination {
  display: flex;
  justify-content: center;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-top: 2.5rem;
}
.pagination .page-item { display: flex; }
.pagination .page-link {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 2.4rem;
  height: 2.4rem;
  padding-inline: 0.5rem;
  border-radius: 50%;
  font-size: 0.88rem;
  font-weight: 500;
  border: 1px solid var(--border);
  color: var(--text);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.pagination .page-item.active .page-link,
.pagination .page-link:hover {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
}
.pagination .page-item.disabled .page-link {
  opacity: 0.35;
  pointer-events: none;
}

/* ================================================================
   FOOTER
   ================================================================ */
.site-footer {
  background: var(--bg-dark);
  border-top: 3px solid var(--accent);
  padding-block: 2rem;
  color: rgba(255, 255, 255, 0.58);
  font-size: 0.83rem;
}

.site-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-footer__powered {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.ico {
  height: 1.1rem;
  width: auto;
  opacity: 0.55;
  transition: opacity var(--dur) var(--ease);
  vertical-align: middle;
}
a:hover .ico { opacity: 1; }

.edit-link {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.58);
  transition: color var(--dur) var(--ease);
}
.edit-link:hover { color: rgba(255, 255, 255, 0.8); }

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 900px) {
  .about__grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 2.5rem;
  }
  ul.tweets {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 600px) {
  .section { padding-block: 3rem; }

  .hero__scroll { display: none; }

  .about__link-card:hover {
    transform: none;
  }

  .gallery-grid,
  .gallery-list-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.6rem;
  }

  .site-footer__inner {
    flex-direction: column;
    text-align: center;
  }
}

/* ================================================================
   UTILITIES
   ================================================================ */
.notranslate { /* preserve — used for Google Translate "notranslate" hint */ }
.hidden      { display: none !important; }
.sr-only     {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); border: 0;
}

/* Architecture section */
.architecture-section {
  background: var(--bg-alt, #f3f4f6);
  border-top: 1px solid var(--border);
}
.architecture-section img.diagram {
  width: 100%;
  max-width: 900px;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.1);
}