/* ==========================================================================
   Finn Sommer — Personal Site
   Editorial / Warm Minimal
   ========================================================================== */

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

:root {
  /* Colors */
  --bg: #f7f5f0;
  --bg-elev: #fbfaf6;
  --ink: #1a1a1a;
  --ink-soft: #4a4a4a;
  --ink-muted: #8a8278;
  --line: #d8d3c7;
  --line-soft: #e8e3d6;
  --accent: #c2410c;
  --accent-soft: rgba(194, 65, 12, 0.08);

  /* Type */
  --serif: 'Instrument Serif', 'Playfair Display', Georgia, serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', Menlo, monospace;

  /* Layout */
  --container: 1180px;
  --pad-x: clamp(1.5rem, 5vw, 3.5rem);
  --pad-y-section: clamp(5rem, 10vw, 9rem);

  /* Motion */
  --ease: cubic-bezier(0.65, 0, 0.35, 1);
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Subtle film grain overlay -------------------------------------------- */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1000;
  opacity: 0.035;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Typography ----------------------------------------------------------- */
.mono {
  font-family: var(--mono);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.small {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.serif-italic {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

em {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
}

strong {
  font-weight: 600;
}

::selection {
  background: var(--accent);
  color: var(--bg);
}

/* Layout helpers ------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}

main {
  display: block;
}

main > section {
  padding-top: var(--pad-y-section);
  padding-bottom: var(--pad-y-section);
  border-top: 1px solid var(--line-soft);
}

main > section:first-of-type {
  border-top: none;
}

/* Section labels ------------------------------------------------------- */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--ink-muted);
  margin-bottom: 2rem;
}

.section-label__dot {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

.section-title {
  font-family: var(--serif);
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 1.5rem;
  max-width: 30ch;
}

.section-intro {
  font-size: 1.125rem;
  color: var(--ink-soft);
  max-width: 60ch;
  margin-bottom: 4rem;
}

/* ==========================================================================
   STATUS BAR (top)
   ========================================================================== */
.status-bar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 245, 240, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-soft);
}

.status-bar__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0.85rem var(--pad-x);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--ink-soft);
}

.status-bar__right {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.dot {
  width: 7px;
  height: 7px;
  background: #2d8f3a;
  border-radius: 50%;
  animation: pulse 2.5s ease-in-out infinite;
  box-shadow: 0 0 0 0 rgba(45, 143, 58, 0.5);
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(45, 143, 58, 0.5); }
  50% { box-shadow: 0 0 0 5px rgba(45, 143, 58, 0); }
}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero {
  min-height: calc(100vh - 50px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  padding-top: 5rem !important;
  padding-bottom: 6rem !important;
}

.hero__meta {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--ink-muted);
  margin-bottom: 2.5rem;
}

.hero__meta-divider {
  color: var(--line);
}

.hero__headline {
  font-family: var(--serif);
  font-size: clamp(2.6rem, 7.5vw, 5.4rem);
  font-weight: 400;
  line-height: 1.02;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin-bottom: 2rem;
  max-width: 18ch;
}

.hero__sub {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 56ch;
  margin-bottom: 2.75rem;
}

.hero__sub em {
  color: var(--ink);
}

.hero__actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.85rem 1.5rem;
  font-family: var(--sans);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.25s var(--ease);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn--primary {
  background: var(--ink);
  color: var(--bg);
}

.btn--primary:hover {
  background: var(--accent);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}

.btn--ghost:hover {
  border-color: var(--ink);
  background: var(--bg-elev);
}

.scroll-hint {
  position: absolute;
  left: var(--pad-x);
  bottom: 2rem;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--ink-muted);
}

.scroll-hint__line {
  width: 2.5rem;
  height: 1px;
  background: var(--line);
  position: relative;
  overflow: hidden;
}

.scroll-hint__line::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--accent);
  transform-origin: left;
  animation: line-pulse 2.4s ease-in-out infinite;
}

@keyframes line-pulse {
  0%   { transform: scaleX(0); transform-origin: left; }
  50%  { transform: scaleX(1); transform-origin: left; }
  51%  { transform: scaleX(1); transform-origin: right; }
  100% { transform: scaleX(0); transform-origin: right; }
}

/* ==========================================================================
   CURRENTLY
   ========================================================================== */
.currently__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem 3rem;
  margin-top: 1rem;
}

.currently__item {
  display: flex;
  gap: 1.25rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line-soft);
}

.currently__icon {
  font-size: 1.4rem;
  line-height: 1;
  flex-shrink: 0;
  width: 2rem;
  filter: grayscale(0.15);
}

.currently__body h3 {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 400;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.currently__body p {
  font-size: 0.95rem;
  color: var(--ink-soft);
  line-height: 1.55;
}

/* ==========================================================================
   WORK / TIMELINE
   ========================================================================== */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2rem;
  padding: 2.5rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: 5rem;
}

.stat__num {
  font-family: var(--serif);
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 0.75rem;
}

.stat__label {
  color: var(--ink-muted);
  line-height: 1.5;
  letter-spacing: 0.06em;
}

/* Timeline ------------------------------------------------------------- */
.timeline {
  list-style: none;
  position: relative;
  padding-left: 0;
}

.timeline__item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 3rem;
  padding: 2.5rem 0;
  border-top: 1px solid var(--line-soft);
  position: relative;
  transition: background 0.3s var(--ease);
}

.timeline__item:hover {
  background: linear-gradient(90deg, var(--accent-soft) 0%, transparent 80%);
}

.timeline__item:first-child {
  border-top: none;
  padding-top: 1rem;
}

.timeline__date {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  color: var(--ink-muted);
  padding-top: 0.4rem;
  position: relative;
}

.timeline__date::before {
  content: '';
  position: absolute;
  right: -1.5rem;
  top: 0.7rem;
  width: 8px;
  height: 8px;
  background: var(--bg);
  border: 1.5px solid var(--accent);
  border-radius: 50%;
}

.timeline__date-now {
  color: var(--ink);
}

.timeline__role-wrapper {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.timeline__role {
  font-family: var(--serif);
  font-size: 1.85rem;
  font-weight: 400;
  letter-spacing: -0.015em;
  line-height: 1.1;
  color: var(--ink);
}

.timeline__type {
  color: var(--accent);
  letter-spacing: 0.08em;
}

.timeline__bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.timeline__bullets li {
  position: relative;
  padding-left: 1.5rem;
  color: var(--ink-soft);
  line-height: 1.55;
  font-size: 1rem;
}

.timeline__bullets li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.65rem;
  width: 0.65rem;
  height: 1px;
  background: var(--ink-muted);
}

.timeline__bullets strong {
  color: var(--ink);
}

/* ==========================================================================
   THESIS
   ========================================================================== */
.thesis__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 4rem;
  align-items: start;
  margin-top: 1rem;
}

.thesis__main .section-title {
  margin-bottom: 2rem;
}

.thesis__abstract {
  font-size: 1.05rem;
  color: var(--ink-soft);
  line-height: 1.7;
  margin-bottom: 1.25rem;
  max-width: 60ch;
}

.thesis__abstract:last-of-type {
  margin-bottom: 2.5rem;
}

.thesis__meta-card {
  background: var(--bg-elev);
  border: 1px solid var(--line-soft);
  padding: 1.75rem;
  border-radius: 4px;
  position: sticky;
  top: 5rem;
}

.thesis__meta-row {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line-soft);
}

.thesis__meta-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.thesis__meta-row:first-child {
  padding-top: 0;
}

.thesis__meta-key {
  color: var(--ink-muted);
}

.thesis__meta-row span:last-child {
  color: var(--ink);
  font-size: 0.95rem;
}

/* ==========================================================================
   BUILDS
   ========================================================================== */
.builds__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.build-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-elev);
  border: 1px solid var(--line-soft);
  padding: 2rem;
  border-radius: 4px;
  transition: all 0.3s var(--ease);
  position: relative;
  overflow: hidden;
  min-height: 260px;
}

.build-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
  pointer-events: none;
}

.build-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: 0 12px 30px -12px rgba(194, 65, 12, 0.15);
}

.build-card:hover::after {
  opacity: 0.04;
}

.build-card__num {
  color: var(--ink-muted);
  font-size: 0.8rem;
  margin-bottom: 1.5rem;
}

.build-card__title {
  font-family: var(--serif);
  font-size: 1.85rem;
  font-weight: 400;
  letter-spacing: -0.015em;
  margin-bottom: 0.75rem;
  line-height: 1.1;
}

.build-card__sub {
  font-size: 0.95rem;
  color: var(--ink-soft);
  line-height: 1.55;
  margin-bottom: auto;
  padding-bottom: 1.5rem;
}

.build-card__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--ink-muted);
  padding-top: 1rem;
  border-top: 1px solid var(--line-soft);
}

.build-card__link {
  color: var(--accent);
  font-weight: 600;
  transition: transform 0.25s var(--ease);
}

.build-card:hover .build-card__link {
  transform: translateX(3px);
}

.build-card--alt {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}

.build-card--alt .build-card__num,
.build-card--alt .build-card__sub {
  color: rgba(247, 245, 240, 0.65);
}

.build-card--alt .build-card__meta {
  color: rgba(247, 245, 240, 0.55);
  border-top-color: rgba(247, 245, 240, 0.15);
}

.build-card--alt .build-card__link {
  color: var(--accent);
}

.build-card--alt:hover {
  border-color: var(--accent);
}

/* ==========================================================================
   STACK
   ========================================================================== */
.stack__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 3rem 4rem;
  margin-top: 3rem;
}

.stack__col-title {
  color: var(--accent);
  margin-bottom: 1.25rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--line);
}

.stack__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.stack__list li {
  font-size: 1rem;
  color: var(--ink);
  position: relative;
  padding-left: 1.25rem;
  line-height: 1.4;
}

.stack__list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--ink-muted);
}

/* ==========================================================================
   EDUCATION
   ========================================================================== */
.edu-list {
  list-style: none;
  margin-top: 2rem;
}

.edu-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 3rem;
  padding: 2rem 0;
  border-top: 1px solid var(--line-soft);
  align-items: start;
}

.edu-item:first-child {
  border-top: 1px solid var(--line);
}

.edu-item__date {
  color: var(--ink-muted);
  padding-top: 0.4rem;
}

.edu-item__body h3 {
  font-family: var(--serif);
  font-size: 1.6rem;
  font-weight: 400;
  letter-spacing: -0.015em;
  margin-bottom: 0.4rem;
  line-height: 1.15;
}

.edu-item__body p {
  color: var(--ink-soft);
  line-height: 1.5;
}

.edu-item__sub {
  color: var(--ink-muted);
  margin-left: 0.4rem;
}

.languages {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
  padding-top: 3rem;
  margin-top: 2rem;
  border-top: 1px solid var(--line-soft);
  color: var(--ink);
}

.languages__label {
  color: var(--accent);
  margin-right: 1rem;
}

.languages__lvl {
  color: var(--ink-muted);
  font-style: italic;
  font-family: var(--serif);
  font-size: 1.05em;
  margin-left: 0.3rem;
}

/* ==========================================================================
   CONTACT
   ========================================================================== */
.contact__headline {
  font-family: var(--serif);
  font-size: clamp(2.5rem, 6vw, 4.2rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin-bottom: 1.5rem;
  max-width: 22ch;
}

.contact__sub {
  font-size: 1.125rem;
  color: var(--ink-soft);
  max-width: 60ch;
  margin-bottom: 4rem;
  line-height: 1.6;
}

.contact__links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0;
  border-top: 1px solid var(--line);
}

.contact__link {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.75rem 1.25rem;
  border-bottom: 1px solid var(--line-soft);
  border-right: 1px solid var(--line-soft);
  transition: all 0.25s var(--ease);
  position: relative;
  cursor: pointer;
}

.contact__link:hover:not(.contact__link--static) {
  background: var(--ink);
  color: var(--bg);
  border-right-color: var(--ink);
  border-bottom-color: var(--ink);
}

.contact__link:hover:not(.contact__link--static) .contact__link-key {
  color: var(--accent);
}

.contact__link--static {
  cursor: default;
}

.contact__link-key {
  color: var(--ink-muted);
  letter-spacing: 0.1em;
}

.contact__link-val {
  font-family: var(--serif);
  font-size: 1.4rem;
  letter-spacing: -0.01em;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
  border-top: 1px solid var(--line);
  padding: 2rem 0;
  background: var(--bg-elev);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--ink-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

.footer a:hover {
  color: var(--accent);
}

/* ==========================================================================
   SCROLL REVEAL ANIMATIONS
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 900px) {
  .thesis__grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .thesis__meta-card {
    position: static;
  }

  .timeline__item,
  .edu-item {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .timeline__date::before {
    display: none;
  }

  .timeline__role {
    font-size: 1.55rem;
  }

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

@media (max-width: 600px) {
  body {
    font-size: 16px;
  }

  .status-bar__inner {
    padding: 0.7rem var(--pad-x);
  }

  .hero {
    min-height: auto;
    padding-top: 4rem !important;
    padding-bottom: 4rem !important;
  }

  .hero__meta {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .hero__actions {
    width: 100%;
  }

  .btn {
    flex: 1;
    justify-content: center;
  }

  .scroll-hint {
    display: none;
  }

  .stats {
    grid-template-columns: 1fr;
    padding: 2rem 0;
  }

  .build-card {
    padding: 1.5rem;
  }

  .contact__links {
    grid-template-columns: 1fr;
  }

  .contact__link {
    border-right: none;
  }
}

/* ==========================================================================
   PREFERS REDUCED MOTION
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .dot,
  .scroll-hint__line::after {
    animation: none;
  }
}