/* ============================================
   SVEND OLDENBURG — PERSONAL SITE
   Aesthetic: Editorial warmth. Candlelit room.
   Fonts: Fraunces (display) + Outfit (body)
   ============================================ */

/* --- CUSTOM PROPERTIES --- */
:root {
  --bg-deep: #1a1714;
  --bg-dark: #1f1b17;
  --bg-mid: #262220;
  --text-primary: #e8e0d4;
  --text-muted: #9a8e7f;
  --text-dim: #6b6057;
  --accent: #c4956a;
  --accent-hover: #d9ad82;
  --rule: rgba(154, 142, 127, 0.15);

  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Outfit', system-ui, sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 8rem;
  --space-2xl: 12rem;

  --page-margin: clamp(1.5rem, 5vw, 6rem);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-weight: 300;
  color: var(--text-primary);
  background-color: var(--bg-deep);
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

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

/* --- GRAIN OVERLAY --- */
.grain {
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* --- SCROLL REVEAL --- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.9s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
  transition-delay: var(--delay, 0s);
}

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

/* --- SECTION LABEL --- */
.section-label {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-lg);
}

/* ========================
   NAVIGATION
   ======================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--page-margin);
  transition: background-color 0.4s ease, backdrop-filter 0.4s ease;
}

.nav.scrolled {
  background-color: rgba(26, 23, 20, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav__name {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  transition: color 0.3s ease;
}

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

.nav__links {
  display: flex;
  list-style: none;
  gap: var(--space-lg);
}

.nav__links a {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color 0.3s ease;
  position: relative;
}

.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.3s ease;
}

.nav__links a:hover {
  color: var(--text-primary);
}

.nav__links a:hover::after {
  width: 100%;
}

/* Mobile toggle */
.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 6px;
  z-index: 200;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--text-primary);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav__toggle.active span:first-child {
  transform: translateY(3.5px) rotate(45deg);
}

.nav__toggle.active span:last-child {
  transform: translateY(-3.5px) rotate(-45deg);
}

/* Mobile overlay */
.nav__overlay {
  position: fixed;
  inset: 0;
  z-index: 150;
  background: var(--bg-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.nav__overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.nav__overlay ul {
  list-style: none;
  text-align: center;
}

.nav__overlay li {
  margin-bottom: var(--space-lg);
}

.nav__overlay a {
  font-family: var(--font-display);
  font-size: clamp(2rem, 8vw, 4rem);
  font-weight: 300;
  color: var(--text-muted);
  transition: color 0.3s ease;
}

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

/* ========================
   HERO
   ======================== */
.hero {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-xl) var(--page-margin);
  position: relative;
}

.hero__content {
  max-width: 52rem;
}

.hero__label {
  margin-bottom: var(--space-md);
}

.hero__name {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 10vw, 9rem);
  font-weight: 300;
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
  font-optical-sizing: auto;
}

.hero__tagline {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.5vw, 1.6rem);
  font-weight: 300;
  font-style: italic;
  color: var(--accent);
  margin-bottom: var(--space-md);
}

.hero__intro {
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  font-weight: 300;
  color: var(--text-muted);
  max-width: 32rem;
  margin: 0 auto;
  line-height: 1.8;
}

/* Scroll indicator */
.hero__scroll {
  position: absolute;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
}

.scroll-line {
  width: 1px;
  height: 56px;
  background: var(--rule);
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 40%;
  background: var(--accent);
  animation: scrollPulse 2.4s cubic-bezier(0.45, 0, 0.55, 1) infinite;
}

@keyframes scrollPulse {
  0% { top: -40%; }
  60% { top: 100%; }
  100% { top: 100%; }
}

/* ========================
   PROJECTS
   ======================== */
.projects {
  padding: var(--space-2xl) var(--page-margin) var(--space-xl);
  max-width: 64rem;
  margin: 0 auto;
}

.project {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--rule);
  transition: border-color 0.3s ease;
  cursor: pointer;
}

.project:last-of-type {
  border-bottom: 1px solid var(--rule);
}

.project:hover {
  border-top-color: var(--accent);
}

.project:hover + .project {
  border-top-color: var(--accent);
}

.project:last-of-type:hover {
  border-bottom-color: var(--accent);
}

.project__info {
  flex: 1;
}

.project__name {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 300;
  line-height: 1.2;
  margin-bottom: var(--space-xs);
  transition: color 0.3s ease;
}

.project:hover .project__name {
  color: var(--accent);
}

.project__desc {
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--text-muted);
  max-width: 28rem;
  line-height: 1.7;
}

.project__arrow {
  font-size: 1.4rem;
  color: var(--text-dim);
  transition: color 0.3s ease, transform 0.3s ease;
  margin-top: 0.6rem;
  flex-shrink: 0;
}

.project:hover .project__arrow {
  color: var(--accent);
  transform: translateX(4px);
}

/* --- PROJECT TAG --- */
.project__tag {
  display: inline-block;
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #4ade80;
  border: 1px solid rgba(74, 222, 128, 0.3);
  padding: 0.2rem 0.6rem;
  border-radius: 2px;
  margin-top: var(--space-sm);
}

/* --- PROJECT PREVIEW (mini dashboard mockup) --- */
.project__preview {
  margin-top: var(--space-sm);
  background: #0d1117;
  border: 1px solid rgba(74, 222, 128, 0.15);
  border-radius: 4px;
  padding: 0.6rem 0.8rem;
  max-width: 18rem;
}

.preview-bar {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin-bottom: 0.5rem;
}

.preview-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.preview-dot--red { background: #ef4444; }
.preview-dot--yellow { background: #f59e0b; }
.preview-dot--green { background: #4ade80; }

.preview-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.55rem;
  letter-spacing: 0.1em;
  color: #f59e0b;
  margin-left: 0.3rem;
}

.preview-body {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.preview-line {
  height: 3px;
  border-radius: 1px;
  background: rgba(139, 148, 158, 0.2);
}

.preview-line--wide { width: 80%; }
.preview-line--med { width: 55%; }

.preview-cols {
  display: flex;
  gap: 0.3rem;
  margin-top: 0.15rem;
}

.preview-col {
  flex: 1;
  height: 14px;
  border-radius: 2px;
  background: rgba(139, 148, 158, 0.1);
  border: 1px solid rgba(139, 148, 158, 0.08);
}

/* ========================
   WRITING
   ======================== */
.writing {
  padding: var(--space-xl) var(--page-margin) var(--space-2xl);
  max-width: 64rem;
  margin: 0 auto;
}

.writing__subtitle {
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--text-muted);
  margin-top: calc(var(--space-lg) * -0.5);
  margin-bottom: var(--space-xl);
}

.writing__intro {
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  font-weight: 300;
  color: var(--text-muted);
  max-width: 36rem;
  line-height: 1.8;
  margin-bottom: var(--space-lg);
}

.writing__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.article {
  display: flex;
  flex-direction: column;
  padding: var(--space-lg);
  border: 1px solid var(--rule);
  transition: border-color 0.4s ease, background-color 0.4s ease;
}

.article:hover {
  border-color: rgba(196, 149, 106, 0.3);
  background-color: rgba(196, 149, 106, 0.03);
}

.article--featured {
  grid-column: 1 / -1;
  padding: var(--space-xl) var(--space-lg);
}

.article__tag {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-sm);
}

.article__title {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.5vw, 2rem);
  font-weight: 300;
  line-height: 1.25;
  margin-bottom: var(--space-sm);
  transition: color 0.3s ease;
}

.article--featured .article__title {
  font-size: clamp(1.8rem, 3.5vw, 3rem);
}

.article:hover .article__title {
  color: var(--accent);
}

.article__excerpt {
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: var(--space-md);
  flex: 1;
}

.article__link {
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  transition: color 0.3s ease;
}

.article:hover .article__link {
  color: var(--accent);
}

/* ========================
   CONNECT
   ======================== */
.connect {
  padding: var(--space-2xl) var(--page-margin) var(--space-xl);
  text-align: center;
  max-width: 40rem;
  margin: 0 auto;
}

.connect__heading {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 300;
  line-height: 1.1;
  margin-bottom: var(--space-xl);
}

.connect__links {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.connect__link {
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding-bottom: 4px;
  border-bottom: 1px solid transparent;
  transition: color 0.3s ease, border-color 0.3s ease;
}

.connect__link:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ========================
   FOOTER
   ======================== */
.footer {
  padding: var(--space-xl) var(--page-margin) var(--space-lg);
  text-align: center;
  border-top: 1px solid var(--rule);
}

.footer p {
  font-size: 0.7rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--text-dim);
}

/* ========================
   RESPONSIVE
   ======================== */
@media (max-width: 768px) {
  .nav__links {
    display: none;
  }

  .nav__toggle {
    display: flex;
  }

  .hero {
    padding-top: var(--space-2xl);
  }

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

  .article--featured {
    padding: var(--space-lg);
  }

  .project {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .project__arrow {
    margin-top: 0;
  }

  .connect__links {
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
  }
}

@media (max-width: 480px) {
  .hero__name {
    font-size: clamp(2.8rem, 14vw, 4.5rem);
  }

  .section-label {
    font-size: 0.6rem;
  }
}

/* --- SELECTION COLOR --- */
::selection {
  background: rgba(196, 149, 106, 0.25);
  color: var(--text-primary);
}

/* --- FOCUS VISIBLE --- */
:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 4px;
}