/* ============================================
   HORACE D. WILLIAMS — PORTFOLIO
   Visual theme: Dark, editorial, luxury serif
   ============================================ */

/* --- Skip Nav --- */
.skip-nav {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--white);
  color: var(--black);
  padding: 0.5rem 1.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  z-index: 2000;
  border-radius: 2px;
  transition: top 0.2s ease;
}

.skip-nav:focus {
  top: 1rem;
  opacity: 1;
}

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

:root {
  --black: #000000;
  --charcoal: #3a3a3a;
  --charcoal-light: #444444;
  --dark-gray: #2a2a2a;
  --mid-gray: #666666;
  --light-gray: #999999;
  --off-white: #e8e8e8;
  --white: #ffffff;
  --rule-color: rgba(255, 255, 255, 0.15);
  --serif: 'Cormorant Garamond', 'Georgia', serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--sans);
  font-weight: 300;
  color: var(--white);
  background-color: var(--black);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  color: var(--white);
  text-decoration: none;
  transition: opacity 0.3s ease;
}

a:hover {
  opacity: 0.7;
}

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

/* --- Container --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1.5rem 0;
  transition: background-color 0.4s ease, padding 0.4s ease, backdrop-filter 0.4s ease;
}

.nav.scrolled {
  background-color: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 1rem 0;
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.nav-logo-dot {
  opacity: 0.4;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2.5rem;
}

.nav-links a {
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.7;
  transition: opacity 0.3s ease;
}

.nav-links a:hover {
  opacity: 1;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 28px;
  height: 20px;
  position: relative;
  z-index: 1001;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 1px;
  background: var(--white);
  position: absolute;
  left: 0;
  transition: transform 0.3s ease, top 0.3s ease;
}

.nav-toggle span:first-child {
  top: 4px;
}

.nav-toggle span:last-child {
  top: 16px;
}

.nav-toggle.active span:first-child {
  top: 10px;
  transform: rotate(45deg);
}

.nav-toggle.active span:last-child {
  top: 10px;
  transform: rotate(-45deg);
}

/* --- Hero --- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
}

.hero--single {
  background-color: var(--black);
  justify-content: center;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  overflow: hidden;
}

.hero-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1);
  opacity: 0.5;
}

.hero-video-fallback {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1);
  opacity: 0.5;
}

.hero-bg.no-autoplay .hero-video {
  display: none;
}

.hero-bg.no-autoplay .hero-video-fallback {
  display: block;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(0,0,0,0.4) 0%, rgba(0,0,0,0.15) 50%, rgba(0,0,0,0.7) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 6rem 2rem 4rem;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.hero-name {
  font-family: var(--serif);
  font-size: clamp(3rem, 9vw, 7rem);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.hero-name-indent {
  display: inline-block;
  margin-left: 1rem;
}

.hero-tagline {
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--light-gray);
  max-width: 560px;
  margin: 2rem 0;
  line-height: 1.7;
}

.hero-rule {
  width: 60px;
  height: 1px;
  background: var(--rule-color);
  margin-bottom: 2rem;
}

.hero-contact {
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--off-white);
}

.hero-divider {
  margin: 0 1.25rem;
  opacity: 0.3;
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  right: 2rem;
  width: 1px;
  height: 60px;
  display: flex;
  align-items: flex-end;
  z-index: 3;
}

.scroll-line {
  width: 1px;
  height: 100%;
  background: var(--white);
  opacity: 0.3;
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.1; transform: scaleY(0.5); transform-origin: bottom; }
  50% { opacity: 0.4; transform: scaleY(1); transform-origin: bottom; }
}

/* --- Sections --- */
.section {
  padding: 7rem 0;
}

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

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

.section-title {
  font-family: var(--serif);
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 300;
  margin-bottom: 4rem;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 1px;
  background: var(--rule-color);
  margin-top: 1.5rem;
}

.section-title--large {
  font-size: clamp(3.5rem, 8vw, 7rem);
}

/* --- About --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.about-lead {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--off-white);
}

.about-details p {
  font-size: 0.95rem;
  color: var(--light-gray);
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

.about-brands {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--rule-color);
}

.about-brands-label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--light-gray);
  margin-bottom: 1.25rem;
}

.brands-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.brands-list span {
  font-size: 0.8rem;
  font-weight: 400;
  padding: 0.4rem 1rem;
  border: 1px solid var(--rule-color);
  border-radius: 2px;
  color: var(--off-white);
  transition: border-color 0.3s ease;
}

.brands-list span:hover {
  border-color: rgba(255, 255, 255, 0.4);
}

/* --- Timeline / Experience --- */
.timeline {
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 120px;
  width: 1px;
  height: 100%;
  background: var(--rule-color);
}

.timeline-item {
  display: flex;
  gap: 3rem;
  padding-bottom: 3.5rem;
  position: relative;
}

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

.timeline-item::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 117px;
  width: 7px;
  height: 7px;
  background: var(--white);
  border-radius: 50%;
}

.timeline-date {
  min-width: 120px;
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: var(--light-gray);
  padding-top: 0.2rem;
  text-align: right;
  padding-right: 1.5rem;
}

.timeline-content {
  padding-left: 1.5rem;
  flex: 1;
}

.timeline-role {
  font-family: var(--serif);
  font-size: 1.4rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
  line-height: 1.3;
}

.timeline-company {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--light-gray);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}

.timeline-desc {
  font-size: 0.9rem;
  color: var(--light-gray);
  line-height: 1.7;
  max-width: 600px;
}

/* --- Portfolio --- */
.portfolio-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 3rem;
}

.filter-btn {
  background: none;
  border: 1px solid var(--rule-color);
  color: var(--light-gray);
  font-family: var(--sans);
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.6rem 1.5rem;
  cursor: pointer;
  transition: all 0.3s ease;
  border-radius: 2px;
}

.filter-btn:hover {
  border-color: rgba(255, 255, 255, 0.4);
  color: var(--white);
}

.filter-btn.active {
  background: var(--white);
  color: var(--black);
  border-color: var(--white);
}

.portfolio-section .container {
  max-width: 2400px;
  padding: 0 4rem;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.portfolio-card--full {
  grid-column: 1 / -1;
}

.portfolio-card--full .card-image img {
  height: 540px;
  object-position: center center;
}

.portfolio-card {
  background: var(--dark-gray);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: transform 0.4s ease, border-color 0.4s ease;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.card-image {
  width: 100%;
  overflow: hidden;
  position: relative;
  background: var(--black);
}

.card-image img {
  width: 100%;
  height: 440px;
  object-fit: cover;
  object-position: top center;
  display: block;
  transition: transform 0.6s ease, opacity 0.4s ease;
  opacity: 0.9;
}

.portfolio-card:hover .card-image img {
  transform: scale(1.03);
  opacity: 1;
}

.card-inner {
  padding: 2rem 2.5rem 2.5rem;
}

.portfolio-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--white);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s ease;
}

.portfolio-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.15);
}

.portfolio-card:hover::before {
  transform: scaleX(1);
}

.portfolio-card.hidden {
  display: none;
}

.card-category {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--light-gray);
  display: block;
  margin-bottom: 1rem;
}

.card-title {
  font-family: var(--serif);
  font-size: 1.75rem;
  font-weight: 500;
  margin-bottom: 0.75rem;
  line-height: 1.2;
}

.card-desc {
  font-size: 0.88rem;
  color: var(--light-gray);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.card-tags span {
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  padding: 0.3rem 0.75rem;
  border: 1px solid var(--rule-color);
  color: var(--light-gray);
  border-radius: 2px;
}

/* --- Skills --- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 3rem;
}

.skill-group-title {
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--rule-color);
}

.skill-list {
  list-style: none;
}

.skill-list li {
  font-size: 0.88rem;
  color: var(--light-gray);
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: color 0.3s ease;
}

.skill-list li:hover {
  color: var(--white);
}

/* --- Contact --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin-top: 1rem;
}

.contact-item {
  margin-bottom: 2rem;
}

.contact-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--light-gray);
  margin-bottom: 0.5rem;
}

.contact-value {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--white);
}

a.contact-value:hover {
  opacity: 0.7;
}

/* --- Footer --- */
.footer {
  background: var(--black);
  padding: 2.5rem 0;
  border-top: 1px solid var(--rule-color);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 600;
}

.footer-copy {
  font-size: 0.75rem;
  color: var(--mid-gray);
}

/* --- Back Link (Case Study Nav) --- */
.back-link {
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.7;
  transition: opacity 0.3s ease;
}

.back-link:hover {
  opacity: 1;
}

/* --- Case Study Pages --- */
.case-header {
  padding: 10rem 0 4rem;
  background: var(--black);
}

.case-category {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--light-gray);
  margin-bottom: 1.5rem;
}

.case-title {
  font-family: var(--serif);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.case-rule {
  width: 60px;
  height: 1px;
  background: var(--rule-color);
  margin-bottom: 2rem;
}

.case-intro {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 400;
  line-height: 1.6;
  color: var(--off-white);
  max-width: 720px;
  margin-bottom: 2rem;
}

.case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.case-tags span {
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.4rem 1rem;
  border: 1px solid var(--rule-color);
  color: var(--light-gray);
  border-radius: 2px;
}

/* Case Details */
.case-details {
  padding: 4rem 0;
  background: var(--charcoal);
}

.case-details-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.5rem;
}

.case-detail-item p {
  font-size: 0.95rem;
  color: var(--light-gray);
  line-height: 1.8;
}

/* Case Full Image */
.case-image-section {
  padding: 3rem 0;
  background: var(--black);
}

.case-image-full {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

.case-image-full img {
  width: 100%;
  height: auto;
  display: block;
}

.case-image-full img:first-child {
  border-radius: 2px 2px 0 0;
}

.case-image-full img:last-child {
  border-radius: 0 0 2px 2px;
}

.case-image-full img:only-child {
  border-radius: 2px;
}

/* Case Study Prev/Next Navigation */
.case-nav-section {
  padding: 3rem 0 4rem;
  background: var(--black);
  border-top: 1px solid var(--rule-color);
}

.case-nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.case-nav-prev,
.case-nav-next,
.case-nav-center {
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--light-gray);
  transition: color 0.3s ease;
}

a.case-nav-prev:hover,
a.case-nav-next:hover,
a.case-nav-center:hover {
  color: var(--white);
  opacity: 1;
}

.case-nav-prev {
  text-align: left;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.case-nav-center {
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  padding: 0.5rem 1.5rem;
  border: 1px solid var(--rule-color);
  border-radius: 2px;
}

.case-nav-next {
  text-align: right;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Portfolio card as link */
a.portfolio-card {
  text-decoration: none;
  color: var(--white);
  cursor: pointer;
}

/* --- Featured Section --- */
.featured {
  background: var(--black);
  border-top: 1px solid var(--rule-color);
  border-bottom: 1px solid var(--rule-color);
  overflow: hidden;
}

.featured-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 5rem 2rem;
}

.featured-label {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 300;
  letter-spacing: -0.01em;
  color: var(--white);
  margin-bottom: 0.5rem;
}

.featured-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.featured-text {
  display: flex;
  flex-direction: column;
}

.featured-category {
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--light-gray);
  opacity: 0.5;
  margin-bottom: 1.5rem;
}

.featured-title {
  font-family: var(--serif);
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.featured-desc {
  font-size: 0.95rem;
  font-weight: 300;
  color: var(--light-gray);
  line-height: 1.8;
  margin-bottom: 1.5rem;
  max-width: 480px;
}

.featured-meta {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--light-gray);
  letter-spacing: 0.04em;
  margin-bottom: 2.5rem;
}

.featured-meta-divider {
  margin: 0 0.75rem;
  opacity: 0.3;
}

.featured-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white);
  padding: 1rem 2rem;
  border: 1px solid var(--rule-color);
  border-radius: 2px;
  transition: all 0.4s ease;
  align-self: flex-start;
}

.featured-cta:hover {
  background: var(--white);
  color: var(--black);
  border-color: var(--white);
  opacity: 1;
}

.featured-cta-arrow {
  transition: transform 0.3s ease;
}

.featured-cta:hover .featured-cta-arrow {
  transform: translateX(4px);
}

.featured-image {
  display: block;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.featured-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.6s ease, opacity 0.4s ease;
  opacity: 0.9;
}

.featured-image:hover img {
  transform: scale(1.03);
  opacity: 1;
}

/* --- Featured Toggle --- */
.featured-header {
  display: flex;
  flex-direction: column;
  margin-bottom: 3rem;
}

.featured-header .featured-label {
  margin-bottom: 0.5rem;
}

.featured-subtext {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--light-gray);
  opacity: 0.6;
  margin-bottom: 1.5rem;
}

.featured-toggle {
  display: flex;
  gap: 0.75rem;
}

.featured-toggle-btn {
  background: transparent;
  border: 1px solid var(--rule-color);
  color: var(--light-gray);
  font-family: var(--sans);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.85rem 1.5rem;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.toggle-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 1px solid var(--rule-color);
  transition: all 0.3s ease;
  flex-shrink: 0;
}

.featured-toggle-btn:hover {
  border-color: var(--white);
  color: var(--white);
}

.featured-toggle-btn:hover .toggle-indicator {
  border-color: var(--white);
}

.featured-toggle-btn.active {
  background: var(--white);
  color: var(--black);
  border-color: var(--white);
}

.featured-toggle-btn.active .toggle-indicator {
  background: var(--black);
  border-color: var(--black);
}

.featured-slide {
  display: none;
}

.featured-slide.active {
  display: block;
}

/* --- Statement Bar --- */
.statement-bar {
  background: var(--white);
  padding: 2.5rem 2rem;
  text-align: center;
}

.statement-text {
  font-family: var(--serif);
  font-size: clamp(1.1rem, 2.5vw, 1.6rem);
  font-weight: 300;
  color: var(--black);
  line-height: 1.5;
  max-width: 800px;
  margin: 0 auto;
  letter-spacing: -0.01em;
}

.statement-text strong {
  font-weight: 600;
}

/* --- Client Logo Marquee --- */
.marquee-section {
  width: 100%;
  background: var(--black);
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--rule-color);
}

.marquee {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 6%, black 94%, transparent 100%);
  mask-image: linear-gradient(to right, transparent 0%, black 6%, black 94%, transparent 100%);
}

.marquee-track {
  display: flex;
  width: max-content;
  animation: marqueeScroll 50s linear infinite;
}

.marquee-content {
  display: flex;
  align-items: center;
  gap: 3.5rem;
  padding: 0.75rem 1.75rem;
}

.marquee-content img {
  height: 28px;
  width: auto;
  opacity: 0.7;
  transition: opacity 0.4s ease;
  flex-shrink: 0;
}

.marquee-content img:hover {
  opacity: 1;
}

@keyframes marqueeScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* --- Case Study Video --- */
.case-video-wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

.case-video-wrap video {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 2px;
  background: var(--dark-gray);
}

/* --- Case Study Download --- */
.case-download-section {
  padding: 4rem 0;
  background: var(--charcoal);
}

.case-download {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 2.5rem 3rem;
  border: 1px solid var(--rule-color);
  border-radius: 2px;
}

.case-download-title {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.case-download-desc {
  font-size: 0.9rem;
  color: var(--light-gray);
  line-height: 1.6;
  max-width: 520px;
}

.case-download-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--sans);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--black);
  background: var(--white);
  padding: 1rem 2rem;
  border: 1px solid var(--white);
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
  text-decoration: none;
}

.case-download-btn:hover {
  background: transparent;
  color: var(--white);
  opacity: 1;
}

/* --- Fade-in Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 1024px) {
  .featured-content {
    gap: 3rem;
  }

  .portfolio-section .container {
    padding: 0 2rem;
  }

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

  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
  }

  .timeline::before {
    left: 100px;
  }

  .timeline-date {
    min-width: 100px;
  }

  .timeline-item::before {
    left: 97px;
  }
}

@media (max-width: 768px) {
  .featured-inner {
    padding: 4rem 1.25rem;
  }

  .featured-toggle {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .featured-toggle-btn {
    font-size: 0.7rem;
    padding: 0.7rem 1rem;
  }

  .featured-content {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .featured-image {
    order: -1;
  }

  .featured-title {
    font-size: clamp(2rem, 8vw, 3rem);
  }

  .case-video-wrap {
    padding: 0 1.25rem;
  }

  .case-download {
    flex-direction: column;
    align-items: flex-start;
    padding: 2rem;
  }

  .marquee-section {
    padding: 1rem 0;
  }

  .marquee-content img {
    height: 22px;
  }

  .marquee-content {
    gap: 2.5rem;
  }

  .statement-bar {
    padding: 2rem 1.25rem;
  }

  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--black);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    transform: translateY(-100%);
    transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
  }

  .nav-links.open {
    transform: translateY(0);
    overflow-y: auto;
  }

  .nav-links a {
    font-size: 1rem;
    opacity: 1;
  }

  .hero-content {
    padding: 5rem 1.25rem 3rem;
  }

  .hero-name {
    font-size: clamp(2.5rem, 12vw, 4.5rem);
  }

  .hero-name-indent {
    margin-left: 0.5rem;
  }

  .hero-contact {
    font-size: 0.8rem;
  }

  .section {
    padding: 5rem 0;
  }

  .section-title {
    margin-bottom: 3rem;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  /* Flatten timeline for mobile */
  .timeline::before {
    display: none;
  }

  .timeline-item {
    flex-direction: column;
    gap: 0.5rem;
    padding-bottom: 2.5rem;
    padding-left: 1.5rem;
    border-left: 1px solid var(--rule-color);
  }

  .timeline-item::before {
    left: -4px;
    top: 4px;
  }

  .timeline-date {
    min-width: auto;
    text-align: left;
    padding-right: 0;
  }

  .timeline-content {
    padding-left: 0;
  }

  .portfolio-section .container {
    padding: 0 1.25rem;
  }

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

  .card-image img {
    height: 320px;
  }

  .portfolio-card--full {
    grid-column: 1;
  }

  .portfolio-card--full .card-image img {
    height: 320px;
  }

  .skills-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-inner {
    flex-direction: column;
    gap: 0.75rem;
    text-align: center;
  }

  .container {
    padding: 0 1.25rem;
  }
}

@media (max-width: 480px) {
  .hero-contact {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
  }

  .hero-divider {
    display: none;
  }

  .portfolio-filters {
    gap: 0.4rem;
  }

  .filter-btn {
    padding: 0.5rem 1rem;
    font-size: 0.7rem;
  }

  .card-title {
    font-size: 1.4rem;
  }

  .contact-value {
    font-size: 1.1rem;
  }

  .case-header {
    padding: 7rem 0 3rem;
  }

  .case-nav-prev,
  .case-nav-next {
    font-size: 0.75rem;
  }

  .case-nav-center {
    font-size: 0.65rem;
    padding: 0.4rem 0.8rem;
  }

  .case-image-full {
    padding: 0 1rem;
  }

  .case-details-grid {
    grid-template-columns: 1fr;
  }
}