/* ============================================
   YAKSHITH — PORTFOLIO v2
   Black & Grey, Bold Typography, Minimal
   ============================================ */

:root {
  --bg-primary: #FAFAFA;
  --bg-dark: #0A0A0A;
  --bg-card: #F0F0F0;
  --bg-card-dark: #141414;
  --text-primary: #0A0A0A;
  --text-secondary: #555555;
  --text-muted: #888888;
  --text-on-dark: #F5F5F5;
  --text-on-dark-muted: #999999;
  --border-color: #E0E0E0;
  --border-dark: #2A2A2A;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --section-padding: clamp(80px, 10vw, 160px);
  --container-max: 1440px;
  --container-padding: clamp(20px, 4vw, 80px);
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --transition-smooth: 0.6s var(--ease-out-expo);
  --transition-fast: 0.3s var(--ease-out-quart);
}

*, *::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: 400;
  color: var(--text-primary);
  background: var(--bg-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a { text-decoration:none; color:inherit; transition: opacity var(--transition-fast); }
a:hover { opacity: 0.7; }
img { max-width:100%; height:auto; display:block; }
ul, ol { list-style:none; }
button { border:none; background:none; cursor:pointer; font-family:inherit; }
::selection { background: var(--text-primary); color: var(--bg-primary); }

/* ── Cursor ── */
.cursor-dot {
  width:8px; height:8px;
  background: var(--text-primary);
  border-radius:50%;
  position:fixed; top:0; left:0;
  pointer-events:none; z-index:10000;
  mix-blend-mode: difference;
}
.cursor-ring {
  width:40px; height:40px;
  border:1.5px solid var(--text-primary);
  border-radius:50%;
  position:fixed; top:0; left:0;
  pointer-events:none; z-index:10000;
  transition: width .3s ease, height .3s ease, border .3s ease;
  mix-blend-mode: difference;
}
.cursor-ring.hover {
  width:60px; height:60px;
  border-color: var(--bg-primary);
  background: rgba(255,255,255,.1);
}

/* ── Layout ── */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* ══════════════════════════════════════
   NAVIGATION
   ══════════════════════════════════════ */
.nav {
  position:fixed; top:0; left:0; right:0;
  z-index:1000; padding:24px 0;
  transition: all var(--transition-fast);
}
.nav.scrolled {
  background: rgba(250,250,250,.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding:16px 0;
  border-bottom:1px solid var(--border-color);
}
.nav .container {
  display:flex; flex-direction:column;
}

/* Top row: logo + CTAs */
.nav__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

/* Logo Wrapper + Popup */
.nav__logo-wrap {
  position: relative;
}
.nav__logo {
  font-family: var(--font-display);
  font-size:24px; font-weight:700;
  letter-spacing:-.5px; color: var(--text-primary);
}

/* Profile Popup on Logo Hover */
.nav__profile-popup {
  position: absolute;
  top: calc(100% + 12px);
  left: 0;
  width: 280px;
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 16px 48px rgba(0,0,0,.1), 0 2px 8px rgba(0,0,0,.04);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all .25s var(--ease-out-quart);
  z-index: 1001;
  pointer-events: none;
}
.nav__logo-wrap:hover .nav__profile-popup {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}
.popup__header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-color);
}
.popup__photo {
  width: 44px; height: 44px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center top;
  filter: grayscale(100%);
  border: 1.5px solid var(--border-color);
}
.popup__info {
  display: flex;
  flex-direction: column;
}
.popup__name {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -.02em;
}
.popup__role {
  font-size: 12px;
  font-weight: 400;
  color: var(--text-muted);
  margin-top: 1px;
}
.popup__details {
  display: flex;
  gap: 20px;
  margin-bottom: 14px;
}
.popup__detail {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.popup__detail-label {
  font-size: 10px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
}
.popup__detail-value {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}
.popup__companies {
  padding-top: 14px;
  border-top: 1px solid var(--border-color);
}
.popup__companies-label {
  font-size: 10px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  display: block;
  margin-bottom: 8px;
}
.popup__company-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}
.popup__company-tags span {
  font-size: 11px;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 100px;
  background: var(--bg-card);
  color: var(--text-secondary);
}

.nav__ctas {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav__cta-link {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all var(--transition-fast);
}
.nav__cta-link:hover {
  opacity: 1;
  color: var(--text-primary);
}
.nav__cta-link svg {
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}
.nav__cta-link:hover svg {
  transform: translate(2px, -2px);
}

/* Secondary row: section links — RIGHT-ALIGNED */
.nav__secondary {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border-color);
}
.nav__sec-spacer {
  flex: 1;
}
.nav__sec-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav__sec-dot {
  font-size: 14px;
  color: var(--text-muted);
  opacity: .4;
  user-select: none;
}
.nav__sec-link {
  font-size: 13px;
  font-weight: 400;
  color: var(--text-secondary);
  text-transform: none;
  letter-spacing: 0;
  padding: 4px 6px;
  transition: all var(--transition-fast);
  position: relative;
}
.nav__sec-link:hover {
  opacity: 1;
  color: var(--text-primary);
}

.nav__mobile-toggle {
  display:none; flex-direction:column; gap:6px; width:28px; padding:4px 0;
}
.nav__mobile-toggle span {
  display:block; width:100%; height:2px;
  background: var(--text-primary);
  transition: all var(--transition-fast);
}

/* Mobile Menu */
.mobile-menu {
  position:fixed; inset:0;
  background: var(--bg-primary);
  z-index:999;
  display: flex; flex-direction: column;
  justify-content: center; align-items: center;
  gap: 36px; opacity:0; pointer-events:none;
  transition: opacity var(--transition-fast);
}
.mobile-menu.active { opacity:1; pointer-events:all; }
.mobile-menu a {
  font-family: var(--font-display);
  font-size: clamp(28px, 6vw, 44px);
  font-weight:700; color: var(--text-primary);
}
.mobile-menu__resume {
  display: inline-flex !important;
  align-items: center; gap: 10px;
  font-size: clamp(18px, 3vw, 22px) !important;
  font-weight: 500 !important;
  padding: 14px 28px;
  border: 2px solid var(--text-primary);
  border-radius: 100px;
  margin-top: 12px;
}

/* ══════════════════════════════════════
   HERO SECTION
   ══════════════════════════════════════ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 100px 0 0;
  position: relative;
  overflow: hidden;
}

.hero__content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 0 var(--container-padding);
}

.hero__title-wrapper {
  position: relative;
  text-align: center;
  width: 100%;
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.04em;
  text-align: center;
}

.hero__title-line1 {
  font-size: clamp(64px, 11vw, 170px);
  color: var(--text-primary);
  display: block;
  text-align: center;
  opacity:0; transform:translateY(60px);
  animation: fadeInUp 1s var(--ease-out-expo) .5s forwards;
}

.hero__title-line2 {
  font-size: clamp(52px, 9vw, 140px);
  color: transparent;
  -webkit-text-stroke: 2px var(--text-primary);
  display: block;
  text-align: center;
  margin-top: 0;
  opacity:0; transform:translateY(60px);
  animation: fadeInUp 1s var(--ease-out-expo) .7s forwards;
}

.hero__tagline {
  font-family: var(--font-body);
  font-size: clamp(14px, 1.2vw, 18px);
  font-weight: 400;
  color: var(--text-secondary);
  text-align: center;
  margin-top: 32px;
  letter-spacing: .3px;
  opacity:0; transform:translateY(20px);
  animation: fadeInUp .8s var(--ease-out-expo) 1s forwards;
}

/* Hero CTAs */
.hero__ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-top: 32px;
  opacity:0; transform:translateY(20px);
  animation: fadeInUp .8s var(--ease-out-expo) 1.1s forwards;
}

.hero__cta-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: var(--bg-primary);
  background: var(--text-primary);
  padding: 14px 28px;
  border-radius: 100px;
  transition: all var(--transition-fast);
}
.hero__cta-primary:hover {
  opacity: 1;
  background: #333;
  transform: translateY(-2px);
}
.hero__cta-primary svg {
  transition: transform var(--transition-fast);
}
.hero__cta-primary:hover svg {
  transform: translate(2px, -2px);
}

.hero__cta-whatsapp {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  padding: 0;
  gap: 0;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  background: transparent;
  border-radius: 50%;
  border: 1.5px solid var(--text-primary);
  transition: all var(--transition-fast);
}
.hero__cta-whatsapp:hover {
  opacity: 1;
  background: var(--text-primary);
  color: var(--bg-primary);
  transform: translateY(-2px);
}
.hero__cta-whatsapp svg {
  transition: transform var(--transition-fast);
}
.hero__cta-whatsapp:hover svg {
  fill: var(--bg-primary);
}
.hero__cta-whatsapp-text {
  display: none;
}

/* ── Marquee INSIDE Hero ── */
.hero__marquee {
  width: 100%;
  padding: 28px 0;
  border-top: 1px solid var(--border-color);
  overflow: hidden;
  margin-top: auto;
}

.marquee__track {
  display: flex;
  animation: marquee 30s linear infinite;
  width: max-content;
}

.marquee__content {
  display: flex; align-items: center;
  gap: 40px; padding-right: 40px;
  white-space: nowrap;
}

.marquee__item {
  font-family: var(--font-display);
  font-size: clamp(13px, 1.1vw, 16px);
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 2px;
}

.marquee__dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--text-muted);
  flex-shrink: 0;
}

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

@keyframes fadeInUp {
  to { opacity:1; transform:translateY(0); }
}

@keyframes photoCircleReveal {
  0% { opacity:0; transform: scale(.6); }
  100% { opacity:1; transform: scale(1); }
}

@keyframes fadeIn {
  to { opacity:1; }
}

/* ══════════════════════════════════════
   SECTION COMMONS
   ══════════════════════════════════════ */
.section {
  padding: var(--section-padding) 0;
}
.section__label {
  font-family: var(--font-body);
  font-size:13px; font-weight:500;
  text-transform:uppercase; letter-spacing:3px;
  color: var(--text-muted);
  margin-bottom:60px;
  display:flex; align-items:center; gap:16px;
}
.section__label::before {
  content:''; width:40px; height:1px;
  background: var(--text-muted);
}
.section__label--light { color: var(--text-on-dark-muted); }
.section__label--light::before { background: var(--text-on-dark-muted); }

.section__heading {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 72px);
  font-weight:700; letter-spacing:-.03em;
  line-height:1.1; margin-bottom:48px;
}

/* ══════════════════════════════════════
   ABOUT SECTION
   ══════════════════════════════════════ */
.about {
  background: var(--bg-dark);
  color: var(--text-on-dark);
}

/* Two-column layout: visual (photo + stats) | bio */
.about__layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: clamp(48px, 6vw, 100px);
  align-items: start;
}

/* Left column: Photo card + Stats grid */
.about__visual {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.about__photo-card {
  width: 100%;
  aspect-ratio: 3 / 3.5;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border-dark);
  position: relative;
}
.about__photo-card .about__photo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  filter: grayscale(100%) contrast(1.05);
  transition: filter .6s var(--ease-out-expo), transform .6s var(--ease-out-expo);
}
.about__photo-card:hover .about__photo-img {
  filter: grayscale(0%) contrast(1);
  transform: scale(1.03);
}

.about__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}
.about__stat {
  padding: 20px 0;
  border-top: 1px solid var(--border-dark);
}
.about__stat:nth-child(odd) {
  padding-right: 24px;
  border-right: 1px solid var(--border-dark);
}
.about__stat:nth-child(even) {
  padding-left: 24px;
}
.about__stat-number {
  font-family: var(--font-display);
  font-size: clamp(28px, 3vw, 44px);
  font-weight: 700;
  color: #fff;
  letter-spacing: -.03em;
  line-height: 1;
  margin-bottom: 6px;
}
.about__stat-label {
  font-size: 12px;
  font-weight: 400;
  color: var(--text-on-dark-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

/* Right column: Bio */
.about__bio {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 24px;
  padding-top: 20px;
}

.about__bio-heading {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.5vw, 48px);
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1.15;
  color: #fff;
}

.about__text {
  font-size: clamp(16px, 1.4vw, 20px);
  font-weight: 300;
  line-height: 1.7;
  color: var(--text-on-dark-muted);
  letter-spacing: -.01em;
  max-width: 540px;
}
.about__text strong {
  font-weight: 500;
  color: #fff;
}

.about__social-links {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}
.about__social-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-on-dark-muted);
  padding: 10px 20px;
  border-radius: 100px;
  border: 1px solid var(--border-dark);
  transition: all var(--transition-fast);
}
.about__social-link:hover {
  opacity: 1;
  color: #fff;
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.2);
}
.about__social-link svg {
  flex-shrink: 0;
}

/* ══════════════════════════════════════
   WORK / PROJECTS — 3-COLUMN GRID
   ══════════════════════════════════════ */
.work { background: var(--bg-primary); }

.work__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.project-card {
  background: var(--bg-card);
  border-radius: 20px;
  overflow: hidden;
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
  cursor: pointer;
}
.project-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 60px rgba(0,0,0,.08);
}

.project-card__image {
  width: 100%;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: #E0E0E0;
}
.project-card__image img {
  width:100%; height:100%; object-fit:cover;
  transition: transform .8s var(--ease-out-expo);
}
.project-card:hover .project-card__image img {
  transform: scale(1.05);
}

.project-card__content {
  padding: 24px 24px 28px;
}

.project-card__number {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: .5px;
  display: block;
  margin-bottom: 8px;
}

.project-card__title {
  font-family: var(--font-display);
  font-size: clamp(18px, 1.6vw, 22px);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.25;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}
.project-card__tags span {
  font-size: 12px;
  font-weight: 500;
  padding: 5px 12px;
  border-radius: 100px;
  background: rgba(10,10,10,.06);
  color: var(--text-secondary);
}

.project-card__link {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition-fast);
}
.project-card__link:hover { opacity:1; gap:10px; }
.project-card__link svg {
  transition: transform var(--transition-fast);
}
.project-card__link:hover svg {
  transform: translate(3px, -3px);
}

/* View All Button */
.work__view-all {
  text-align: center;
  margin-top: 48px;
}
.work__view-all-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: var(--bg-primary);
  background: var(--text-primary);
  padding: 16px 32px;
  border-radius: 100px;
  transition: all var(--transition-fast);
}
.work__view-all-btn:hover {
  opacity:1; background:#333;
  transform: translateY(-2px);
}
.work__view-all-btn svg {
  transition: transform var(--transition-fast);
}
.work__view-all-btn:hover svg {
  transform: translateX(4px);
}

/* ══════════════════════════════════════
   EXPERIENCE SECTION
   ══════════════════════════════════════ */
.experience {
  background: var(--bg-dark);
  color: var(--text-on-dark);
}
.timeline { display:grid; gap:0; }
.timeline__item {
  display:grid; grid-template-columns:200px 1fr;
  gap:60px; padding:48px 0;
  border-bottom:1px solid var(--border-dark);
  transition: all var(--transition-fast);
}
.timeline__item:first-child { border-top:1px solid var(--border-dark); }
.timeline__item:hover { padding-left:16px; }

.timeline__period {
  font-size:14px; font-weight:400;
  color: var(--text-on-dark-muted);
  padding-top:6px;
}
.timeline__content h3 {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.5vw, 32px);
  font-weight:700; letter-spacing:-.02em;
  margin-bottom:6px; color:#fff;
}
.timeline__content h4 {
  font-size:15px; font-weight:400;
  color: var(--text-on-dark-muted);
  margin-bottom:16px;
}
.timeline__content p {
  font-size:16px; line-height:1.7;
  color: var(--text-on-dark-muted);
  max-width:600px;
}
.timeline__content ul { margin-top:12px; }
.timeline__content ul li {
  font-size:15px; line-height:1.7;
  color: var(--text-on-dark-muted);
  padding-left:20px; position:relative;
  margin-bottom:4px;
}
.timeline__content ul li::before {
  content:'—'; position:absolute; left:0;
  color: var(--text-on-dark-muted);
}

/* ══════════════════════════════════════
   TOOLS / SOFTWARE SECTION (NEW)
   ══════════════════════════════════════ */
.tools-section {
  background: var(--bg-primary);
  padding: clamp(60px, 8vw, 120px) 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.tools__label {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 400;
  color: var(--text-muted);
  text-align: center;
  letter-spacing: 1px;
  margin-bottom: 48px;
}

.tools__grid {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: clamp(32px, 5vw, 72px);
}

.tool-item {
  display: flex;
  align-items: center;
  gap: 12px;
  transition: all var(--transition-fast);
  cursor: default;
}
.tool-item:hover {
  transform: translateY(-2px);
}

.tool-item__icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  border-radius: 6px;
  object-fit: contain;
}

.tool-item__badge {
  width: 36px;
  height: 36px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.tool-item__name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.2;
}

/* ══════════════════════════════════════
   SKILLS SECTION
   ══════════════════════════════════════ */
.skills { background: var(--bg-card); }

.skills__grid {
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap:24px;
}
.skill-card {
  background: var(--bg-primary);
  border-radius:20px;
  padding: clamp(28px, 3vw, 40px);
  transition: all var(--transition-fast);
  border:1px solid transparent;
}
.skill-card:hover {
  border-color: var(--border-color);
  transform:translateY(-2px);
  box-shadow: 0 20px 60px rgba(0,0,0,.06);
}
.skill-card__icon {
  width:48px; height:48px; border-radius:12px;
  background: var(--text-primary);
  display:flex; align-items:center; justify-content:center;
  margin-bottom:24px;
}
.skill-card__icon svg { width:24px; height:24px; color: var(--bg-primary); }

.skill-card__title {
  font-family: var(--font-display);
  font-size:20px; font-weight:700;
  letter-spacing:-.01em; margin-bottom:16px;
  color: var(--text-primary);
}
.skill-card__items {
  display:flex; flex-wrap:wrap; gap:8px;
}
.skill-card__item {
  font-size:14px; font-weight:400;
  color: var(--text-secondary);
  padding:8px 16px; border-radius:100px;
  background: rgba(10,10,10,.05);
  transition: all var(--transition-fast);
}
.skill-card__item:hover {
  background: var(--text-primary);
  color: var(--bg-primary);
}

/* ══════════════════════════════════════
   EDUCATION SECTION
   ══════════════════════════════════════ */
.education { background: var(--bg-primary); }

.education__grid {
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap:32px;
}
.education__item {
  padding:36px;
  background: var(--bg-card);
  border-radius:20px;
  transition: all var(--transition-fast);
}
.education__item:hover {
  transform:translateY(-2px);
  box-shadow: 0 20px 60px rgba(0,0,0,.06);
}
.education__item-icon {
  width:40px; height:40px;
  margin-bottom:20px; opacity:.6;
}
.education__item h3 {
  font-family: var(--font-display);
  font-size: clamp(18px, 1.5vw, 22px);
  font-weight:700; letter-spacing:-.01em;
  margin-bottom:12px; color: var(--text-primary);
}
.education__item p {
  font-size:15px; line-height:1.6;
  color: var(--text-secondary);
}

/* ══════════════════════════════════════
   CONTACT SECTION
   ══════════════════════════════════════ */
.contact {
  background: var(--bg-dark);
  color: var(--text-on-dark);
}
.contact__heading {
  font-family: var(--font-display);
  font-size: clamp(42px, 7vw, 100px);
  font-weight:700; letter-spacing:-.04em;
  line-height:1; margin-bottom:60px; color:#fff;
}
.contact__heading span {
  color:transparent;
  -webkit-text-stroke:1.5px #fff;
}
.contact__grid {
  display:grid; grid-template-columns:1fr 1fr; gap:60px;
}
.contact__info {
  display:flex; flex-direction:column; gap:32px;
}
.contact__info-item {
  display:flex; flex-direction:column; gap:6px;
}
.contact__info-label {
  font-size:12px; font-weight:500;
  text-transform:uppercase; letter-spacing:2px;
  color: var(--text-on-dark-muted);
}
.contact__info-value {
  font-family: var(--font-display);
  font-size: clamp(18px, 1.6vw, 24px);
  font-weight:500; color:#fff;
  transition: opacity var(--transition-fast);
}
.contact__info-value:hover { opacity:.7; }

.contact__cta {
  display:flex; flex-direction:column;
  justify-content:center; gap:20px;
}
.contact__cta-btn {
  display:inline-flex; align-items:center; justify-content:center; gap:12px;
  font-family: var(--font-display);
  font-size:16px; font-weight:600;
  color: var(--text-primary); background:#fff;
  padding:20px 40px; border-radius:100px;
  transition: all var(--transition-fast);
}
.contact__cta-btn:hover {
  opacity:1; background:#E0E0E0;
  transform:translateY(-2px);
}

.contact__social {
  display:flex; gap:16px; margin-top:12px;
}
.contact__social-link {
  width:48px; height:48px; border-radius:50%;
  border:1px solid var(--border-dark);
  display:flex; align-items:center; justify-content:center;
  transition: all var(--transition-fast);
}
.contact__social-link:hover {
  opacity:1; background:#fff; border-color:#fff;
}
.contact__social-link:hover svg { color: var(--text-primary); }
.contact__social-link svg {
  width:20px; height:20px;
  color: var(--text-on-dark-muted);
}

/* ══════════════════════════════════════
   FOOTER
   ══════════════════════════════════════ */
.footer {
  background: var(--bg-dark);
  border-top:1px solid var(--border-dark);
  padding:32px 0;
}
.footer .container {
  display:flex; justify-content:space-between; align-items:center;
}
.footer__text {
  font-size:14px; color: var(--text-on-dark-muted);
}
.footer__back-top {
  font-size:14px; font-weight:500;
  color: var(--text-on-dark-muted);
  display:flex; align-items:center; gap:8px;
}
.footer__back-top:hover { opacity:1; color:#fff; }

/* ══════════════════════════════════════
   REVEAL ANIMATIONS
   ══════════════════════════════════════ */
.reveal {
  opacity:0; transform:translateY(40px);
  transition: opacity .8s var(--ease-out-expo), transform .8s var(--ease-out-expo);
}
.reveal.visible { opacity:1; transform:translateY(0); }
.reveal-delay-1 { transition-delay:.1s; }
.reveal-delay-2 { transition-delay:.2s; }
.reveal-delay-3 { transition-delay:.3s; }
.reveal-delay-4 { transition-delay:.4s; }

/* ══════════════════════════════════════
   PAGE LOADER
   ══════════════════════════════════════ */
.page-loader {
  position:fixed; inset:0;
  background: var(--bg-dark);
  z-index:9999;
  display:flex; align-items:center; justify-content:center;
  transition: opacity .6s ease, visibility .6s ease;
}
.page-loader.loaded { opacity:0; visibility:hidden; }
.page-loader__text {
  font-family: var(--font-display);
  font-size: clamp(24px, 4vw, 48px);
  font-weight:700; color:#fff;
  letter-spacing:-.03em;
  animation: pulse 1.5s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity:.4; }
  50% { opacity:1; }
}

/* ══════════════════════════════════════
   RESPONSIVE — TABLET
   ══════════════════════════════════════ */
@media (max-width: 1024px) {
  .about__layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .about__visual {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 32px;
    align-items: start;
  }
  .about__photo-card {
    aspect-ratio: 1 / 1;
  }

  .work__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .timeline__item {
    grid-template-columns:1fr;
    gap:12px;
  }

  .contact__grid { grid-template-columns:1fr; gap:40px; }

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

  .hero__title-line1 {
    font-size: clamp(56px, 10vw, 120px);
  }
  .hero__title-line2 {
    font-size: clamp(44px, 8vw, 100px);
  }

  /* WhatsApp is already icon-only at base styles */
}

/* ══════════════════════════════════════
   RESPONSIVE — MOBILE
   ══════════════════════════════════════ */
@media (max-width: 768px) {
  .nav__ctas { display:none; }
  .nav__secondary { display:none; }
  .nav__profile-popup { display:none; }
  .nav__mobile-toggle { display:flex; }

  .hero {
    padding: 80px 0 0;
    min-height: 100vh;
  }
  .hero__content { padding-bottom: 32px; }

  .hero__title-line1 {
    font-size: clamp(48px, 14vw, 80px);
  }
  .hero__title-line2 {
    font-size: clamp(36px, 10vw, 64px);
    -webkit-text-stroke-width: 1.2px;
  }
  .hero__cta-primary { padding: 12px 24px; font-size: 14px; }
  .hero__cta-whatsapp { width: 44px; height: 44px; }
  .about__visual {
    grid-template-columns: 1fr;
  }
  .about__photo-card {
    max-width: 280px;
    aspect-ratio: 1 / 1;
  }
  .about__bio-heading {
    font-size: clamp(24px, 7vw, 36px);
  }
  .about__social-links {
    flex-direction: column;
    gap: 10px;
  }
  .about__social-link {
    justify-content: center;
  }

  .work__grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

  .tools__grid {
    gap: 24px;
    justify-content: center;
  }
  .tool-item { gap: 8px; }
  .tool-item__name { font-size: 14px; }
  .tool-item__icon { width: 28px; height: 28px; }
  .tool-item__badge { width: 28px; height: 28px; }
  .tool-item__badge span { font-size: 12px !important; }

  .marquee__content { gap:24px; padding-right:24px; }

  .contact__heading { font-size: clamp(36px, 10vw, 60px); }

  .footer .container {
    flex-direction:column; gap:16px; text-align:center;
  }

  .cursor-dot, .cursor-ring { display:none; }
  .timeline__item:hover { padding-left:0; }

  .education__grid { grid-template-columns:1fr; }
  .education__item { padding: 24px; }
}

@media (max-width: 480px) {
  :root { --container-padding: 20px; }

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

  .project-card__content { padding: 20px 20px 24px; }

  .hero__title-line1 {
    font-size: clamp(40px, 16vw, 60px);
  }
  .hero__title-line2 {
    font-size: clamp(30px, 11vw, 48px);
  }
}

/* ══════════════════════════════════════
   CASE STUDY PAGE — GLOBALS
   ══════════════════════════════════════ */
.cs-body {
  --accent: #2DD4A8;
  --accent-dark: #1FA882;
  --accent-glow: rgba(45, 212, 168, .12);
}

/* ══════════════════════════════════════
   CASE STUDY — NAVIGATION
   ══════════════════════════════════════ */
.cs-nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 1000; padding: 20px 0;
  background: rgba(250,250,250,.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}
.cs-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.cs-nav__back {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  letter-spacing: -.02em;
}
.cs-nav__back:hover { opacity: .7; }
.cs-nav__back svg {
  transition: transform var(--transition-fast);
}
.cs-nav__back:hover svg {
  transform: translateX(-4px);
}
.cs-nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.cs-nav__link {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  position: relative;
}
.cs-nav__link::after {
  content: '';
  position: absolute;
  left: 0; bottom: -4px;
  width: 0; height: 1.5px;
  background: var(--text-primary);
  transition: width var(--transition-fast);
}
.cs-nav__link:hover { opacity: 1; color: var(--text-primary); }
.cs-nav__link:hover::after { width: 100%; }

/* ══════════════════════════════════════
   CASE STUDY — HERO
   ══════════════════════════════════════ */
.cs-hero {
  padding: 140px 0 0;
  background: var(--bg-primary);
}
.cs-hero__breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 48px;
}
.cs-hero__breadcrumb a {
  color: var(--text-muted);
  transition: color var(--transition-fast);
}
.cs-hero__breadcrumb a:hover { color: var(--text-primary); opacity: 1; }
.cs-hero__breadcrumb span { color: var(--text-muted); }

.cs-hero__header {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 60px;
  align-items: start;
  margin-bottom: 40px;
}
.cs-hero__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
}
.cs-hero__tag {
  font-size: 12px;
  font-weight: 500;
  padding: 5px 14px;
  border-radius: 100px;
  background: var(--bg-card);
  color: var(--text-secondary);
}
.cs-hero__tag--accent {
  background: var(--accent-glow);
  color: var(--accent-dark);
  border: 1px solid rgba(45,212,168,.2);
}
.cs-hero__logo {
  display: block;
  height: 48px;
  width: auto;
  margin-bottom: 20px;
  object-fit: contain;
}
.cs-hero__logo--large {
  height: 64px;
  margin-bottom: 24px;
}

/* Screen-reader only (keeps SEO h1 accessible) */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* Founder credibility badge */
.cs-hero__founder {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 32px;
  padding: 14px 20px;
  border-radius: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  max-width: fit-content;
  transition: all var(--transition-fast);
}
.cs-hero__founder:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 20px rgba(45,212,168,.08);
}
.cs-hero__founder-photo {
  width: 48px; height: 48px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border-color);
}
.cs-hero__founder-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.cs-hero__founder-name {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -.01em;
}
.cs-hero__founder-role {
  font-size: 13px;
  font-weight: 400;
  color: var(--text-secondary);
}
.cs-hero__founder-location {
  font-size: 12px;
  font-weight: 400;
  color: var(--text-muted);
}

.cs-hero__title {
  font-family: var(--font-display);
  font-size: clamp(48px, 7vw, 96px);
  font-weight: 700;
  letter-spacing: -.04em;
  line-height: .95;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.cs-hero__subtitle {
  font-family: var(--font-body);
  font-size: clamp(16px, 1.4vw, 20px);
  font-weight: 400;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.5;
}
.cs-hero__desc {
  font-size: 16px;
  font-weight: 300;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 560px;
}

/* Hero stats */
.cs-hero__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  padding-top: 8px;
}
.cs-hero__stat {
  border-left: 2px solid var(--border-color);
  padding-left: 20px;
}
.cs-hero__stat-value {
  font-family: var(--font-display);
  font-size: clamp(28px, 3vw, 44px);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -.03em;
  line-height: 1;
  display: block;
  margin-bottom: 6px;
}
.cs-hero__stat-label {
  font-size: 13px;
  font-weight: 400;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Hero skills */
.cs-hero__skills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 60px;
}
.cs-hero__skills span {
  font-size: 13px;
  font-weight: 500;
  padding: 8px 18px;
  border-radius: 100px;
  background: var(--bg-card);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}
.cs-hero__skills span:hover {
  background: var(--text-primary);
  color: var(--bg-primary);
}

/* Hero image */
.cs-hero__image {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow:
    0 4px 6px rgba(0,0,0,.03),
    0 24px 60px rgba(0,0,0,.06);
}
.cs-hero__image img {
  width: 100%;
  height: auto;
  display: block;
}

/* ══════════════════════════════════════
   CASE STUDY — PROCESS STRIP
   ══════════════════════════════════════ */
.cs-process {
  padding: 48px 0;
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}
.cs-process__track {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
}
.cs-process__step {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 24px;
}
.cs-process__num {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 1.5px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
}
.cs-process__step--active .cs-process__num {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.cs-process__name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
}
.cs-process__step--active .cs-process__name {
  color: var(--text-primary);
}
.cs-process__line {
  width: 48px; height: 1px;
  background: var(--border-color);
}

/* ══════════════════════════════════════
   CASE STUDY — SECTION COMMONS
   ══════════════════════════════════════ */
.cs-section {
  padding: clamp(80px, 10vw, 140px) 0;
}
.cs-section--dark {
  background: var(--bg-dark);
  color: var(--text-on-dark);
}
.cs-section--alt {
  background: var(--bg-card);
}
.cs-section__label {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--text-muted);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.cs-section__label::before {
  content: '';
  width: 32px; height: 1px;
  background: var(--text-muted);
}
.cs-section__label--light { color: var(--text-on-dark-muted); }
.cs-section__label--light::before { background: var(--text-on-dark-muted); }

.cs-section__title {
  font-family: var(--font-display);
  font-size: clamp(32px, 4.5vw, 60px);
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1.1;
  margin-bottom: 24px;
  max-width: 800px;
}
.cs-section__title--light { color: #fff; }

.cs-section__intro {
  font-size: clamp(16px, 1.3vw, 19px);
  font-weight: 300;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 700px;
  margin-bottom: 60px;
}
.cs-section__intro--light { color: var(--text-on-dark-muted); }

/* ══════════════════════════════════════
   01 — BRIEF CARDS
   ══════════════════════════════════════ */
.cs-brief__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 48px;
}
.cs-brief__card {
  padding: 36px;
  border-radius: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
}
.cs-brief__card--accent {
  background: var(--accent-glow);
  border-color: rgba(45,212,168,.2);
}
.cs-brief__card-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-muted);
  display: block;
  margin-bottom: 16px;
}
.cs-brief__card--accent .cs-brief__card-label {
  color: var(--accent-dark);
}
.cs-brief__card p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-secondary);
}
.cs-brief__card--accent p {
  color: var(--text-primary);
}

/* ══════════════════════════════════════
   02 — MARKET CARDS
   ══════════════════════════════════════ */
.cs-market__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.cs-market__card {
  padding: 36px;
  border-radius: 16px;
  background: var(--bg-card-dark);
  border: 1px solid var(--border-dark);
  transition: all var(--transition-fast);
}
.cs-market__card:hover {
  border-color: rgba(45,212,168,.3);
  transform: translateY(-4px);
}
.cs-market__card-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: rgba(45,212,168,.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--accent);
}
.cs-market__card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: -.01em;
}
.cs-market__card p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-on-dark-muted);
}

/* ══════════════════════════════════════
   03 — USER RESEARCH QUOTES
   ══════════════════════════════════════ */
.cs-quotes__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}
.cs-quote {
  padding: 36px;
  border-radius: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  position: relative;
  transition: all var(--transition-fast);
}
.cs-quote:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,.06);
}
.cs-quote__mark {
  font-family: var(--font-display);
  font-size: 64px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 8px;
  opacity: .4;
}
.cs-quote__text {
  font-size: 16px;
  font-weight: 400;
  font-style: italic;
  line-height: 1.7;
  color: var(--text-primary);
  margin-bottom: 24px;
}
.cs-quote__author {
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
}
.cs-quote__role {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  display: block;
  margin-bottom: 6px;
}
.cs-quote__insight {
  font-size: 13px;
  font-weight: 400;
  color: var(--accent-dark);
  font-style: italic;
}

/* Callout Box */
.cs-callout {
  padding: 40px;
  border-radius: 16px;
  background: var(--accent-glow);
  border: 1px solid rgba(45,212,168,.15);
}
.cs-callout--compact {
  margin-top: 40px;
  padding: 32px;
}
.cs-callout__label {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.cs-callout__text {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-secondary);
}
.cs-callout__text strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* ══════════════════════════════════════
   04 — COMPETITIVE TABLE
   ══════════════════════════════════════ */
.cs-table-wrap {
  overflow-x: auto;
  border-radius: 16px;
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  margin-bottom: 0;
}
.cs-table {
  width: 100%;
  border-collapse: collapse;
}
.cs-table th {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  padding: 20px 28px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-card);
}
.cs-table td {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-secondary);
  padding: 20px 28px;
  border-bottom: 1px solid var(--border-color);
  vertical-align: top;
}
.cs-table tr:last-child td {
  border-bottom: none;
}
.cs-table__tool {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
}
.cs-table__logo {
  width: 28px;
  height: 28px;
  object-fit: contain;
  border-radius: 4px;
  flex-shrink: 0;
}
.cs-table__logo--large {
  width: 100px;
  height: auto;
  max-height: 48px;
  border-radius: 6px;
}
.cs-table__tool--logo-only {
  justify-content: center;
  min-width: 100px;
}
.cs-table__highlight {
  background: var(--accent-glow) !important;
}
.cs-table__highlight td {
  border-bottom: none;
}
.cs-table__highlight strong {
  color: var(--text-primary);
}

/* ══════════════════════════════════════
   05 — KEY INSIGHTS
   ══════════════════════════════════════ */
.cs-insights__list {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.cs-insight {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 32px;
  padding: 48px 0;
  border-bottom: 1px solid var(--border-dark);
}
.cs-insight:first-child {
  border-top: 1px solid var(--border-dark);
}
.cs-insight__num {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  color: var(--accent);
  opacity: .5;
  padding-top: 4px;
}
.cs-insight__source {
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent);
  display: block;
  margin-bottom: 12px;
}
.cs-insight__content h3 {
  font-family: var(--font-display);
  font-size: clamp(20px, 2vw, 26px);
  font-weight: 700;
  color: #fff;
  letter-spacing: -.02em;
  line-height: 1.3;
  margin-bottom: 16px;
}
.cs-insight__content p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-on-dark-muted);
  max-width: 640px;
}

/* ══════════════════════════════════════
   06 — REVENUE FLOW
   ══════════════════════════════════════ */
.cs-revenue__flow {
  display: flex;
  align-items: flex-start;
  gap: 0;
  margin-bottom: 32px;
}
.cs-revenue__step {
  flex: 1;
  padding: 32px;
  text-align: center;
  border-radius: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  position: relative;
  transition: all var(--transition-fast);
}
.cs-revenue__step:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,.06);
}
.cs-revenue__step--gate {
  border-color: var(--accent);
  background: var(--accent-glow);
}
.cs-revenue__step-num {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 1.5px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: var(--text-muted);
}
.cs-revenue__step--gate .cs-revenue__step-num {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.cs-revenue__step-badge {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 4px 12px;
  border-radius: 100px;
  display: inline-block;
  margin-bottom: 16px;
}
.cs-revenue__step-badge--free {
  background: rgba(45,212,168,.1);
  color: var(--accent-dark);
}
.cs-revenue__step-badge--paid {
  background: var(--accent);
  color: #fff;
}
.cs-revenue__step-badge--done {
  background: var(--text-primary);
  color: var(--bg-primary);
}
.cs-revenue__step h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  letter-spacing: -.01em;
}
.cs-revenue__step p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
}
.cs-revenue__arrow {
  display: flex;
  align-items: center;
  padding: 0 8px;
  color: var(--text-muted);
  flex-shrink: 0;
  padding-top: 40px;
}

/* ══════════════════════════════════════
   07 — IA GRID
   ══════════════════════════════════════ */
.cs-ia__grid {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.cs-ia__item {
  display: grid;
  grid-template-columns: 180px 40px 1fr;
  gap: 16px;
  align-items: center;
  padding: 28px 0;
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}
.cs-ia__item:first-child {
  border-top: 1px solid var(--border-color);
}
.cs-ia__item:hover {
  padding-left: 12px;
}
.cs-ia__name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -.01em;
}
.cs-ia__arrow {
  font-size: 20px;
  color: var(--accent);
  text-align: center;
}
.cs-ia__reason {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* ══════════════════════════════════════
   08 — DESIGN DECISIONS
   ══════════════════════════════════════ */
.cs-decisions__list {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.cs-decision {
  padding: 48px 0;
  border-bottom: 1px solid var(--border-dark);
}
.cs-decision:first-child {
  border-top: 1px solid var(--border-dark);
}
.cs-decision__header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}
.cs-decision__num {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent);
}
.cs-decision__topic {
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-on-dark-muted);
  padding: 4px 12px;
  border-radius: 100px;
  background: rgba(255,255,255,.06);
}
.cs-decision h3 {
  font-family: var(--font-display);
  font-size: clamp(20px, 2vw, 28px);
  font-weight: 700;
  color: #fff;
  letter-spacing: -.02em;
  line-height: 1.3;
  margin-bottom: 16px;
}
.cs-decision p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-on-dark-muted);
  max-width: 700px;
  margin-bottom: 20px;
}
.cs-decision__tradeoff {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-on-dark-muted);
  padding: 16px 20px;
  border-left: 2px solid var(--accent);
  background: rgba(255,255,255,.03);
  border-radius: 0 8px 8px 0;
  max-width: 640px;
}
.cs-decision__tradeoff strong {
  color: var(--accent);
}

/* ══════════════════════════════════════
   09 — PRODUCT SCREENS
   ══════════════════════════════════════ */
.cs-screen {
  margin-bottom: 60px;
}
.cs-screen:last-child {
  margin-bottom: 0;
}
.cs-screen__info {
  margin-bottom: 32px;
}
.cs-screen__title {
  font-family: var(--font-display);
  font-size: clamp(22px, 2vw, 28px);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -.02em;
  margin-bottom: 12px;
}
.cs-screen__desc {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 700px;
}
.cs-screen__image {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}
.cs-screen__image img {
  width: 100%;
  height: auto;
  display: block;
}

/* ══════════════════════════════════════
   10 — OUTCOME
   ══════════════════════════════════════ */
.cs-outcome__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 60px;
}
.cs-outcome__stat {
  border-left: 2px solid var(--accent);
  padding-left: 24px;
}
.cs-outcome__stat-value {
  font-family: var(--font-display);
  font-size: clamp(36px, 4vw, 56px);
  font-weight: 700;
  color: #fff;
  letter-spacing: -.03em;
  line-height: 1;
  display: block;
  margin-bottom: 10px;
}
.cs-outcome__stat-label {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-on-dark-muted);
  line-height: 1.5;
}

.cs-outcome__results {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 60px;
}
.cs-outcome__result {
  padding: 36px;
  border-radius: 16px;
  background: var(--bg-card-dark);
  border: 1px solid var(--border-dark);
}
.cs-outcome__result h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: -.01em;
}
.cs-outcome__result p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-on-dark-muted);
}

.cs-outcome__quote {
  text-align: center;
  padding: 60px 40px;
  border-top: 1px solid var(--border-dark);
}
.cs-outcome__quote p {
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 700;
  color: #fff;
  letter-spacing: -.02em;
  line-height: 1.3;
  margin-bottom: 16px;
}
.cs-outcome__quote span {
  font-size: 16px;
  font-weight: 300;
  color: var(--text-on-dark-muted);
}

/* ══════════════════════════════════════
   NEXT PROJECT CTA
   ══════════════════════════════════════ */
.cs-next {
  padding: 80px 0;
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
}
.cs-next__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.cs-next__label {
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--text-muted);
}
.cs-next__link {
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 40px);
  font-weight: 700;
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  gap: 16px;
  letter-spacing: -.02em;
  transition: all var(--transition-fast);
}
.cs-next__link:hover { opacity: 1; gap: 24px; }
.cs-next__link svg {
  transition: transform var(--transition-fast);
}
.cs-next__link:hover svg {
  transform: translateX(8px);
}

/* ══════════════════════════════════════
   CASE STUDY — RESPONSIVE TABLET
   ══════════════════════════════════════ */
@media (max-width: 1024px) {
  .cs-hero__header {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .cs-hero__stats {
    grid-template-columns: repeat(4, 1fr);
  }
  .cs-market__grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .cs-quotes__grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .cs-brief__grid {
    grid-template-columns: 1fr;
  }
  .cs-revenue__flow {
    flex-direction: column;
    align-items: stretch;
  }
  .cs-revenue__arrow {
    justify-content: center;
    padding: 8px 0;
    transform: rotate(90deg);
  }
  .cs-insight {
    grid-template-columns: 60px 1fr;
    gap: 20px;
  }
  .cs-ia__item {
    grid-template-columns: 1fr;
    gap: 4px;
  }
  .cs-ia__arrow { display: none; }
  .cs-ia__name { font-size: 16px; }
  .cs-outcome__stats {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .cs-outcome__results {
    grid-template-columns: 1fr;
  }
  .cs-process__track {
    flex-wrap: wrap;
    gap: 8px;
    justify-content: flex-start;
  }
  .cs-process__line { width: 24px; }
}

/* ══════════════════════════════════════
   CASE STUDY — RESPONSIVE MOBILE
   ══════════════════════════════════════ */
@media (max-width: 768px) {
  .cs-nav__links { display: none; }

  .cs-hero { padding: 100px 0 0; }
  .cs-hero__title {
    font-size: clamp(40px, 12vw, 64px);
  }
  .cs-hero__stats {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .cs-hero__skills { gap: 6px; }
  .cs-hero__skills span { font-size: 12px; padding: 6px 14px; }
  .cs-hero__image {
    border-radius: 12px;
  }

  .cs-section {
    padding: clamp(60px, 8vw, 100px) 0;
  }
  .cs-section__title {
    font-size: clamp(28px, 7vw, 40px);
  }

  .cs-insight {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .cs-insight__num {
    font-size: 20px;
  }

  .cs-screen { margin-bottom: 48px; }
  .cs-screen__image { border-radius: 10px; }

  .cs-next__inner {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
  .cs-next__link { font-size: clamp(20px, 6vw, 28px); }

  .cs-process { display: none; }

  .cs-table th,
  .cs-table td {
    padding: 14px 16px;
    font-size: 13px;
  }
  .cs-table__logo { width: 22px; height: 22px; }

  .cs-outcome__quote { padding: 40px 20px; }
  .cs-outcome__quote p {
    font-size: clamp(20px, 5vw, 28px);
  }
}