/* ============================================
   DESIGN SYSTEM — CSS Variables
   ============================================ */

:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --text-primary: #ffffff;
  --text-secondary: #cccccc;
  --text-muted: #999999;
  --accent-blue: #1a1ab8;
  --accent-blue-hover: #2424d4;
  --link-color: #ffffff;
  --card-bg: #1a1a1a;
  --card-border: #2a2a2a;

  --font-primary: 'Montserrat', sans-serif;
  --radius: 8px;
  --radius-pill: 999px;
  --max-width: 900px;
  --side-padding: 60px;
  --section-gap: 80px;
}


/* ============================================
   RESET & BASE
   ============================================ */

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--link-color);
  text-decoration: none;
}

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

strong {
  font-weight: 600;
}


/* ============================================
   NAVIGATION
   ============================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px var(--side-padding);
  background-color: transparent;
  transition: background-color 0.3s ease;
}

.nav-logo img {
  height: 36px;
  width: auto;
  /* SVG is already white, no filter needed */
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 16px;
  font-weight: 400;
  color: var(--text-primary);
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: var(--accent-blue);
}

/* Dropdown */
.nav-dropdown {
  position: relative;
}

.dropdown-trigger {
  cursor: pointer;
}

.dropdown-arrow {
  font-size: 12px;
  margin-left: 2px;
}

.dropdown-menu {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  top: 100%;
  right: 0;
  padding-top: 12px; /* invisible bridge so hover doesn't break */
  z-index: 1001;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.dropdown-menu-inner {
  background-color: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 8px 0;
  min-width: 180px;
}

.nav-dropdown:hover .dropdown-menu {
  visibility: visible;
  opacity: 1;
}

.dropdown-menu a {
  display: block;
  padding: 10px 20px;
  font-size: 14px;
  color: var(--text-primary);
  transition: background-color 0.2s ease;
}

.dropdown-menu a:hover {
  background-color: var(--card-bg);
}


/* ============================================
   HERO
   ============================================ */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 0 var(--side-padding);
}

.hero-content {
  max-width: var(--max-width);
  width: 100%;
}

.hero-greeting {
  font-size: 28px;
  font-weight: 400;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.hero-name {
  font-size: 80px;
  font-weight: 700;
  color: var(--accent-blue);
  line-height: 1.1;
  margin-bottom: 24px;
}

.hero-tagline {
  font-size: 30px;
  font-weight: 400;
  color: var(--text-primary);
  margin-bottom: 20px;
  line-height: 1.4;
}

.hero-description {
  font-size: 24px;
  font-weight: 300;
  color: var(--text-secondary);
  line-height: 1.5;
}


/* ============================================
   WORKS / PROJECT CARDS
   ============================================ */

.works {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--side-padding) var(--section-gap);
  display: flex;
  flex-direction: column;
  gap: var(--section-gap);
}

.project-card {
  display: grid;
  grid-template-columns: 60% 1fr;
  gap: 60px;
  align-items: center;
}

.project-card-image img {
  width: 100%;
  border-radius: var(--radius);
  transition: transform 0.3s ease;
}

.project-card-image:hover img {
  transform: scale(1.02);
}

.project-card-info {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.project-card-title a {
  font-size: 32px;
  font-weight: 700;
  color: var(--accent-blue);
  text-decoration: none;
  transition: opacity 0.2s ease;
}

.project-card-title a:hover {
  opacity: 0.8;
}

.project-card-description {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-secondary);
  line-height: 1.7;
}

.project-card-meta {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
}

.project-card-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  text-decoration: none;
  transition: opacity 0.2s ease;
}

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


/* ============================================
   FOOTER
   ============================================ */

.footer {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 60px var(--side-padding);
  border-top: 1px solid var(--card-border);
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 20px;
}

.footer-logo {
  height: 48px;
  width: auto;
  /* SVG is already white, no filter needed */
}

.footer-heading {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.2;
}

.footer-right {
  text-align: right;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-text {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-secondary);
}

.footer-credit {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 24px;
  justify-content: flex-end;
  margin-top: 8px;
}

.footer-links a {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-secondary);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}

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

.footer-link-icon {
  margin-right: 4px;
}


/* ============================================
   ABOUT PAGE
   ============================================ */

.page-about {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.about-main {
  flex: 1;
  padding-top: 100px;
}

.about-hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--side-padding) var(--section-gap);
}

.about-hero-title {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 40px;
}

.about-hero-content {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
  align-items: start;
}

.about-photo img {
  width: 100%;
  border-radius: var(--radius);
}

.about-bio {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.about-bio p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.about-section-heading {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 16px;
  margin-bottom: 4px;
}

.about-section-heading:first-child {
  margin-top: 0;
}

/* Lifestyle section */
.about-lifestyle {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--side-padding) var(--section-gap);
  text-align: center;
}

.about-lifestyle-heading {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 32px;
}

.about-lifestyle-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

.about-lifestyle-item img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: 8px;
}

.about-lifestyle-item p {
  font-size: 14px;
  color: var(--text-secondary);
}

.about-lifestyle-tagline {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-muted);
  font-style: italic;
}


/* ============================================
   CASE STUDY — SHARED STYLES
   ============================================ */

.page-casestudy {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.casestudy-body {
  display: flex;
  position: relative;
}

.casestudy-main {
  flex: 1;
  min-width: 0;
}

/* ============================================
   TABLE OF CONTENTS (scroll-spy sidebar)
   ============================================ */

.cs-toc {
  width: 180px;
  flex-shrink: 0;
  position: relative;
  display: none; /* hidden by default, shown on large screens */
}

.cs-toc-inner {
  position: sticky;
  top: 100px;
  max-height: calc(100vh - 140px);
  overflow-y: auto;
  padding: 0 16px 0 24px;
}

.cs-toc-inner::-webkit-scrollbar {
  width: 0;
}

.cs-toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
  border-left: 1px solid #333;
}

.cs-toc-item {
  padding: 6px 0 6px 16px;
  position: relative;
}

.cs-toc-item a {
  font-size: 11px;
  font-weight: 400;
  color: #666;
  text-decoration: none;
  line-height: 1.35;
  display: block;
  transition: color 0.2s ease;
}

.cs-toc-item a:hover {
  color: var(--text-primary);
}

.cs-toc-item.active {
  border-left: 2px solid var(--accent-blue);
  margin-left: -1px;
}

.cs-toc-item.active a {
  color: var(--accent-blue);
  font-weight: 600;
}

@media (min-width: 1200px) {
  .cs-toc {
    display: block;
  }
}

/* Case Study Hero */
.cs-hero {
  position: relative;
  padding: 120px var(--side-padding) 60px;
  overflow: hidden;
}

.cs-hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
  align-items: center;
}

.cs-hero-text h1 {
  font-size: 48px;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 8px;
}

.cs-hero-subtitle {
  font-size: 20px;
  font-weight: 400;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.cs-hero-description {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.cs-hero-image img {
  width: 100%;
  border-radius: var(--radius);
}

/* Meta Grid */
.cs-meta {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px var(--side-padding);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.cs-meta-5col {
  grid-template-columns: repeat(5, 1fr);
}

.cs-meta-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-blue);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.cs-meta-value {
  font-size: 14px;
  color: var(--text-primary);
  line-height: 1.6;
}

/* Contribution Cards */
.cs-contributions {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px var(--side-padding) var(--section-gap);
}

.cs-contributions h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 24px;
}

.cs-contributions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.cs-contribution-card {
  background-color: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
}

.cs-contribution-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Blue Banner */
.cs-banner {
  background-color: var(--accent-blue);
  padding: 60px var(--side-padding);
  text-align: center;
}

.cs-banner h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-primary);
  max-width: var(--max-width);
  margin: 0 auto;
  line-height: 1.3;
}

.cs-banner p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: var(--max-width);
  margin: 8px auto 0;
}

/* Content Section */
.cs-section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--section-gap) var(--side-padding);
}

.cs-section h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 16px;
}

.cs-section h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.cs-section p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.cs-section p:last-child {
  margin-bottom: 0;
}

/* Two-column layout (text + image) */
.cs-two-col {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 40px;
}

.cs-two-col-reverse {
  grid-template-columns: 1.2fr 1fr;
}

.cs-two-col img {
  width: 100%;
  border-radius: var(--radius);
}

/* Quote block */
.cs-quote {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  padding: 32px 0;
}

.cs-quote-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background-color: var(--card-bg);
  flex-shrink: 0;
}

.cs-quote-text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.cs-quote-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

/* Stats / Pie Charts */
.cs-stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  text-align: center;
  margin: 40px 0;
}

.cs-stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.cs-pie {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cs-pie-label {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent-blue);
}

.cs-stat-caption {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

/* Pain point blocks */
.cs-pain-points {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.cs-pain-point {
  background: linear-gradient(135deg, #333 0%, #555 100%);
  border-radius: var(--radius);
  padding: 20px 24px;
  text-align: center;
  font-size: 16px;
  font-weight: 500;
}

.cs-pain-point:last-child {
  background: linear-gradient(135deg, #8b0000 0%, #b22222 100%);
}

/* Design Principles */
.cs-principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 32px 0;
}

.cs-principle h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.cs-principle p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* Feature blocks */
.cs-feature {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
  align-items: center;
  padding: 40px 0;
}

.cs-feature-reverse {
  grid-template-columns: 1.2fr 1fr;
}

.cs-feature h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.cs-feature p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.cs-feature img {
  width: 100%;
  border-radius: var(--radius);
}

/* Image placeholder */
.cs-image-full {
  margin: 32px 0;
}

.cs-image-full img {
  width: 100%;
  border-radius: var(--radius);
}

.cs-image-caption {
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  margin-top: 8px;
}

/* Findings / Theme cards */
.cs-themes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 32px 0;
}

.cs-theme-card {
  background-color: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
}

.cs-theme-card h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 12px;
}

.cs-theme-card .cs-theme-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.cs-theme-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 8px;
}

/* Recommendation section */
.cs-recommendation {
  padding: var(--section-gap) 0;
}

.cs-recommendation h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 12px;
}

.cs-recommendation > p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* What Changes / Why / Signals table */
.cs-eval-table {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 24px;
  padding: 20px;
  background-color: var(--card-bg);
  border-radius: var(--radius);
}

.cs-eval-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.cs-eval-col p, .cs-eval-col li {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.cs-eval-col ul {
  list-style: disc;
  padding-left: 16px;
}

.cs-eval-col li {
  margin-bottom: 4px;
}

/* Outcomes grid */
.cs-outcomes {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 24px 0;
}

.cs-outcome-card {
  background-color: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
}

.cs-outcome-card h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.cs-outcome-card p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* Next steps grid */
.cs-next-steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin: 24px 0;
}

.cs-next-step h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.cs-next-step p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Takeaway cards */
.cs-takeaways {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px var(--side-padding) var(--section-gap);
}

.cs-takeaways h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 24px;
}

.cs-takeaways-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.cs-takeaway-card {
  background-color: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
}

.cs-takeaway-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* View Prototype Button */
.cs-cta {
  text-align: center;
  padding: 40px 0;
}

.cs-cta-button {
  display: inline-block;
  background-color: var(--accent-blue);
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 600;
  padding: 16px 48px;
  border-radius: var(--radius-pill);
  text-decoration: none;
  transition: background-color 0.2s ease;
}

.cs-cta-button:hover {
  background-color: var(--accent-blue-hover);
}

.cs-supporting {
  text-align: center;
  margin-top: 16px;
}

.cs-supporting h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.cs-supporting a {
  font-size: 14px;
  color: var(--accent-blue);
  text-decoration: underline;
}


/* ============================================
   CREATIVES PAGE
   ============================================ */

.page-creatives {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.creatives-main {
  flex: 1;
  padding-top: 100px;
}

.creatives-section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--side-padding) var(--section-gap);
}

.creatives-section-header {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 40px;
  align-items: start;
  margin-bottom: 32px;
}

.creatives-section-header h2 {
  font-size: 36px;
  font-weight: 700;
}

.creatives-section-header p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 8px;
}

.creatives-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.creatives-grid img {
  width: 100%;
  border-radius: var(--radius);
  aspect-ratio: 1;
  object-fit: cover;
}

.creatives-grid-wide img {
  aspect-ratio: auto;
}


/* ============================================
   RESPONSIVE — TABLET (768px)
   ============================================ */

@media (max-width: 768px) {
  :root {
    --side-padding: 32px;
    --section-gap: 60px;
  }

  .hero-name {
    font-size: 56px;
  }

  .hero-tagline {
    font-size: 24px;
  }

  .hero-description {
    font-size: 20px;
  }

  .project-card {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer {
    flex-direction: column;
    gap: 32px;
  }

  .footer-right {
    text-align: left;
  }

  .footer-links {
    justify-content: flex-start;
  }

  /* About */
  .about-hero-content {
    grid-template-columns: 1fr;
  }

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

  /* Case Study */
  .cs-hero-inner {
    grid-template-columns: 1fr;
  }

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

  .cs-meta-5col {
    grid-template-columns: repeat(2, 1fr);
  }

  .cs-contributions-grid {
    grid-template-columns: 1fr;
  }

  .cs-two-col, .cs-two-col-reverse,
  .cs-feature, .cs-feature-reverse {
    grid-template-columns: 1fr;
  }

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

  .cs-principles {
    grid-template-columns: 1fr;
  }

  .cs-themes {
    grid-template-columns: 1fr;
  }

  .cs-eval-table {
    grid-template-columns: 1fr;
  }

  .cs-takeaways-grid {
    grid-template-columns: 1fr;
  }

  .cs-outcomes {
    grid-template-columns: 1fr;
  }

  .cs-next-steps {
    grid-template-columns: 1fr;
  }

  /* Creatives */
  .creatives-section-header {
    grid-template-columns: 1fr;
  }

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


/* ============================================
   RESPONSIVE — MOBILE (480px)
   ============================================ */

@media (max-width: 480px) {
  :root {
    --side-padding: 20px;
    --section-gap: 48px;
  }

  .nav {
    padding: 16px var(--side-padding);
  }

  .nav-logo img {
    height: 28px;
  }

  .nav-links {
    gap: 20px;
  }

  .nav-link {
    font-size: 14px;
  }

  .hero-name {
    font-size: 42px;
  }

  .hero-tagline {
    font-size: 20px;
  }

  .hero-description {
    font-size: 18px;
  }

  .project-card-title a {
    font-size: 24px;
  }

  .footer-heading {
    font-size: 20px;
  }

  .footer-links {
    flex-direction: column;
    gap: 12px;
  }
}