/* ============================================
   Notion-Inspired Portfolio Styles
   Clean, minimal, content-focused design
   ============================================ */

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f7f6f3;
  --color-text: #37352f;
  --color-text-secondary: #6b6b6b;
  --color-text-light: #9b9a97;
  --color-accent: #2eaadc;
  --color-border: #e9e9e7;
  --color-callout-bg: #f1f1ef;
  --color-card-shadow: rgba(15, 15, 15, 0.05);
  --color-card-shadow-hover: rgba(15, 15, 15, 0.1);
  --color-nav-bg: rgba(255, 255, 255, 0.95);

  --font-body: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI Variable Display",
    "Segoe UI", Helvetica, "Apple Color Emoji", Arial, sans-serif, "Segoe UI Emoji", "Segoe UI Symbol";
  --font-mono: "SFMono-Regular", Menlo, Consolas, "PT Mono", "Liberation Mono", Courier, monospace;

  --max-width: 800px;
  --nav-height: 56px;
  --section-padding: 60px;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity 0.2s ease;
}

a:hover {
  opacity: 0.7;
}

img {
  max-width: 100%;
  display: block;
}

strong {
  font-weight: 600;
}

h1, h2, h3 {
  letter-spacing: -0.01em;
  line-height: 1.2;
  font-weight: 600;
}

p {
  margin-top: 0.5em;
  margin-bottom: 0.5em;
}

hr {
  border: none;
  border-bottom: 1px solid rgba(55, 53, 47, 0.09);
}

/* --- Container --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--color-nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
  transition: box-shadow 0.2s ease;
}

.nav.scrolled {
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.04);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.3px;
  color: var(--color-text);
}

.nav-logo:hover {
  opacity: 1;
}

.nav-back {
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: color 0.15s ease;
}

.nav-back:hover {
  color: var(--color-text);
  opacity: 1;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 4px;
}

.nav-links li {
  list-style: none;
}

.nav-links li a {
  display: block;
  padding: 6px 12px;
  font-size: 14px;
  color: var(--color-text-secondary);
  border-radius: 4px;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.nav-links li a:hover {
  background-color: var(--color-callout-bg);
  color: var(--color-text);
  opacity: 1;
}

.nav-links li a.active {
  color: var(--color-text);
  background-color: var(--color-callout-bg);
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 4px;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* --- Hero with Cover Image --- */
.hero {
  padding-top: var(--nav-height);
}

.hero-cover {
  width: 100%;
  max-height: 30vh;
  overflow: hidden;
}

.hero-cover-img {
  width: 100%;
  height: 30vh;
  object-fit: cover;
  object-position: center 55%;
}

.hero-content {
  margin-top: 24px;
  margin-bottom: 0;
}

.page-title {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 700;
  margin-top: 0;
  margin-bottom: 0.5em;
}

/* --- Sections --- */
.section {
  padding: var(--section-padding) 0;
}

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

.section-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-top: 0;
  margin-bottom: 16px;
}

.divider-full {
  border: none;
  border-bottom: 1px solid rgba(55, 53, 47, 0.09);
  margin: 0;
}

/* --- About Section --- */
.about-body p {
  margin-bottom: 0.5em;
}

.about-callouts {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.about-callouts .callout {
  flex: 1;
}

/* Underline links only inside content areas */
.about-body a,
.about-callouts a,
.publication-text a,
.project-body a:not(.project-link) {
  text-decoration: underline;
}

/* --- Callout (Notion-style) --- */
.callout {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 20px;
  background: var(--color-callout-bg);
  border-radius: 10px;
}

.callout-icon {
  font-size: 1.5em;
  line-height: 1.5;
  flex-shrink: 0;
}

.callout p {
  margin: 0;
  color: var(--color-text);
}

/* ============================================
   Experience Timeline
   ============================================ */

.timeline {
  position: relative;
  padding-left: 28px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  margin-bottom: 32px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-marker {
  position: absolute;
  left: -28px;
  top: 8px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 2px solid var(--color-text-light);
}

.timeline-item:first-child .timeline-marker {
  border-color: var(--color-accent);
  background: var(--color-accent);
}

.timeline-item:nth-child(2) .timeline-marker {
    border-color: var(--color-accent);
    background: var(--color-accent);
}

.timeline-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.timeline-content h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 2px;
}

.timeline-date {
  font-size: 13px;
  color: var(--color-text-light);
  white-space: nowrap;
}

.timeline-company {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
}

.timeline-description {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.timeline-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 8px;
}

/* --- Filter Controls --- */
.filter-controls {
  display: flex;
  gap: 6px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 4px 12px;
  font-size: 13px;
  font-family: var(--font-body);
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.filter-btn:hover {
  background: var(--color-callout-bg);
  color: var(--color-text);
}

.filter-btn.active {
  background: var(--color-callout-bg);
  color: var(--color-text);
  font-weight: 500;
}

/* --- Projects Table (Notion database-style) --- */
.projects-table {
  border-top: 1px solid var(--color-border);
}

.projects-table-header {
  display: grid;
  grid-template-columns: 1fr 140px 160px 100px;
  padding: 6px 12px;
  font-size: 0.875rem;
  color: rgba(55, 53, 47, 0.6);
  border-bottom: 1px solid var(--color-border);
}

.project-row {
  display: grid;
  grid-template-columns: 1fr 140px 160px 100px;
  padding: 8px 12px;
  font-size: 0.875rem;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  transition: background-color 0.1s ease;
  align-items: center;
}

.project-row:hover {
  background: var(--color-bg-alt);
  opacity: 1;
}

.project-row.hidden {
  display: none;
}

.pt-col-name {
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pt-col-date {
  color: var(--color-text-light);
  font-size: 0.8rem;
  white-space: nowrap;
}

.pt-col-type {
  text-align: right;
}

/* --- Organization Tags --- */
.org-tag {
  display: inline-block;
  padding: 0 6px;
  font-size: 0.75rem;
  border-radius: 3px;
  white-space: nowrap;
}

.org-tag.db-ec {
  background: rgba(0, 118, 217, 0.203);
  color: rgba(56, 125, 201, 1);
}

.org-tag.themag {
  background: rgba(139, 46, 0, 0.086);
  color: rgba(159, 118, 90, 1);
}

.org-tag.usp {
  background: rgba(0, 100, 45, 0.09);
  color: rgba(80, 148, 110, 1);
}

.org-tag.unb {
  background: rgba(102, 0, 178, 0.078);
  color: rgba(154, 107, 180, 1);
}

.org-tag.altoqi {
  background: rgba(224, 101, 1, 0.129);
  color: rgba(210, 123, 45, 1);
}

.org-tag.ude {
  background: rgba(197, 0, 93, 0.086);
  color: rgba(193, 76, 138, 1);
}

.org-tag.personal {
  background: rgba(211, 168, 0, 0.137);
  color: rgba(203, 148, 52, 1);
}

/* --- Type Badges --- */
.type-badge {
  display: inline-block;
  padding: 0 8px;
  font-size: 0.75rem;
  border-radius: 3px;
  white-space: nowrap;
}

.type-professional {
  background: rgba(0, 118, 217, 0.203);
  color: rgba(56, 125, 201, 1);
}

.type-academic {
  background: rgba(0, 100, 45, 0.09);
  color: rgba(80, 148, 110, 1);
}

.type-personal {
  background: rgba(211, 168, 0, 0.137);
  color: rgba(203, 148, 52, 1);
}

/* --- Publications --- */
.publications-list {
  display: flex;
  flex-direction: column;
}

.publication {
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
}

.publication:first-child {
  padding-top: 0;
}

.publication:last-child {
  border-bottom: none;
}

.publication-text {
  font-size: 0.875rem;
  line-height: 1.6;
  margin: 0;
}

.publication-tag {
  display: inline-block;
  margin-top: 6px;
  padding: 0 6px;
  font-size: 0.7rem;
  background: var(--color-callout-bg);
  border-radius: 3px;
  color: var(--color-text-light);
}

/* --- Footer --- */
.footer {
    text-align: center;
    padding: 40px 0;
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
}

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.footer-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: color 0.15s ease;
}

.footer-link:hover {
  color: var(--color-text);
  opacity: 1;
}

.footer-link svg {
  flex-shrink: 0;
}

.footer-bottom {
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.footer-bottom p {
  font-size: 13px;
  color: var(--color-text-light);
}

/* ============================================
   Project Pages
   ============================================ */

.project-page {
  padding-top: calc(var(--nav-height) + 40px);
  padding-bottom: 60px;
}

.project-header {
  margin-bottom: 32px;
}

.project-header .page-title {
  margin-bottom: 12px;
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.project-meta-item {
  white-space: nowrap;
}

.project-link {
  color: var(--color-accent);
  font-weight: 500;
}

.project-link:hover {
  opacity: 0.7;
}

/* --- Project Body --- */
.project-body p {
  margin-top: 0.5em;
  margin-bottom: 0.5em;
}

.project-body h2 {
  font-size: 1.5rem;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
}

.project-body ul {
  margin: 0.6em 0;
  padding-left: 1.7em;
}

.project-body ul li {
  list-style: disc;
  padding-left: 0.1em;
}

.project-body .callout {
  margin: 1.5em 0;
}

/* --- Media Figures --- */
.media-figure {
  margin: 1.5em 0;
}

.media-figure img {
  border-radius: 2px;
  width: 100%;
}

.media-figure figcaption {
  opacity: 0.5;
  font-size: 85%;
  margin-top: 0.5em;
}

/* --- Image Gallery (2-col) --- */
.image-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 1.5em 0;
}

.image-gallery .media-figure {
  margin: 0;
}

/* --- Photo Gallery --- */
.photo-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 1.5em 0;
}

.photo-gallery .media-figure {
  margin: 0;
}

.photo-gallery .media-figure img {
  height: 300px;
  object-fit: cover;
  border-radius: 2px;
}

/* --- Video --- */
.project-video {
  width: 100%;
  max-height: 500px;
  border-radius: 2px;
  background: #000;
}

/* --- Embed Container --- */
.embed-container {
  position: relative;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  background: var(--color-bg-alt);
}

.embed-container iframe {
  display: block;
  width: 100%;
  min-height: 400px;
}

/* --- Bookmark (Notion-style link preview) --- */
.bookmark {
  margin: 1.5em 0;
}

.bookmark-link {
  display: flex;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  transition: background-color 0.15s ease;
}

.bookmark-link:hover {
  background: var(--color-bg-alt);
  opacity: 1;
}

.bookmark-info {
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.bookmark-title {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.bookmark-description {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.bookmark-href {
  font-size: 0.75rem;
  color: var(--color-text-light);
  margin-top: 2px;
}

/* --- Project Footer --- */
.project-footer {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 16px;
}

.back-link {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.back-link:hover {
  color: var(--color-text);
  opacity: 1;
}

.related-projects {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-size: 13px;
}

.related-label {
  color: var(--color-text-light);
}

.related-projects a {
  color: var(--color-accent);
  font-weight: 500;
}

.related-projects a:hover {
  opacity: 0.7;
}

/* --- In the Media section (project pages) --- */
.in-the-media {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.in-the-media h2 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
  margin-top: 0;
}

.media-links {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.media-links .bookmark {
  margin: 0;
}

.media-links .bookmark + .bookmark {
  margin-top: 8px;
}

/* --- Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 768px) {
  :root {
    --section-padding: 40px;
  }

  .page-title {
    font-size: 2rem;
  }

  .section-title {
    font-size: 1.25rem;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-nav-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 8px 16px;
    gap: 0;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links li a {
    padding: 10px 12px;
  }

  .about-callouts {
    flex-direction: column;
  }

  .projects-table-header {
    grid-template-columns: 1fr 120px;
  }

  .project-row {
    grid-template-columns: 1fr 120px;
  }

  .pt-col-org,
  .pt-col-type {
    display: none;
  }

  .image-gallery,
  .photo-gallery {
    grid-template-columns: 1fr;
  }

  .photo-gallery .media-figure img {
    height: auto;
  }

  .footer-links {
    gap: 12px;
  }
}

@media (max-width: 480px) {
  .page-title {
    font-size: 1.75rem;
  }

  .hero-cover-img {
    height: 20vh;
  }

  .project-meta {
    flex-direction: column;
    gap: 6px;
  }

  .footer-links {
    flex-direction: column;
  }

  .project-footer {
    flex-direction: column;
  }
}