/* ── CSS Variables / Theming ── */
:root {
  /* Core palette */
  --bg: #010b0f;
  --bg2: #025373;
  --bg3: rgba(2, 83, 115, 0.3); /* card/surface backgrounds */
  --bg4: rgba(2, 83, 115, 0.88); /* diamond card bg */
  --bg5: rgba(2, 83, 115, 0.5); /* toolkit diamond bg */

  --accent1: #05f2db;
  --accent2: #d8048d;

  --text1: #ffffff;
  --text2: #f005c8;

  /* Derived / component-level tokens */
  --border-subtle: rgba(5, 242, 219, 0.12); /* nav border */
  --border-accent: rgba(5, 242, 219, 0.3); /* tag/btn borders */
  --border-white: rgba(255, 255, 255, 0.18); /* contact links */
  --border-white-faint: rgba(255, 255, 255, 0.06); /* footer */

  --tag-bg: rgba(5, 242, 219, 0.06);
  --chip-bg: rgba(5, 242, 219, 0.08);
  --chip-border: rgba(5, 242, 219, 0.2);

  --project-gradient-start: rgba(5, 242, 219, 0.1);
  --project-gradient-end: rgba(216, 4, 141, 0.1);
  --project-overlay-mid: rgba(4, 33, 44, 0.948);
  --project-overlay-end: rgba(1, 13, 18, 0.9);

  --hero-btn-primary-color: #012325; /* text on primary button */
  --theme-btn-bg-hover: rgba(5, 242, 219, 0.1);

  --nav-h: 56px;
  --radius: 2px;
  --transition: 0.2s ease;
}

/* ── Light Mode Overrides ── */
.light-mode {
  --bg: #f4ffff;
  --bg2: rgba(190, 235, 235, 0.9);
  --bg3: rgba(100, 200, 210, 0.18);
  --bg4: rgba(200, 240, 245, 0.92);
  --bg5: rgba(150, 215, 225, 0.35);

  --accent1: #0a7a8f;
  --accent2: #d4007a;

  --text1: #241d1d;
  --text2: #d4007a;

  --border-subtle: rgba(10, 122, 143, 0.2);
  --border-accent: rgba(10, 122, 143, 0.35);
  --border-white: rgba(2, 26, 28, 0.18);
  --border-white-faint: rgba(2, 26, 28, 0.1);

  --tag-bg: rgba(10, 122, 143, 0.08);
  --chip-bg: rgba(10, 122, 143, 0.1);
  --chip-border: rgba(10, 122, 143, 0.25);

  --project-gradient-start: rgba(10, 122, 143, 0.12);
  --project-gradient-end: rgba(212, 0, 122, 0.1);
  --project-overlay-mid: rgba(177, 249, 255, 0.89);
  --project-overlay-end: rgba(183, 244, 252, 0.88);

  --hero-btn-primary-color: #ffffff;
  --theme-btn-bg-hover: rgba(10, 122, 143, 0.1);
}

/* ── Reset ── */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  background: var(--bg);
  color: var(--text1);
  font-family: "Inter", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  transition:
    background 0.3s ease,
    color 0.3s ease;
}
a {
  color: var(--accent1);
  text-decoration: none;
}

/* ── Navigation ── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-h);
  background: var(--bg);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  z-index: 100;
  transition:
    background 0.3s ease,
    border-color 0.3s ease;
}
.nav-logo {
  font-size: 15px;
  font-weight: 600;
  color: var(--accent1);
  letter-spacing: 0.04em;
}
.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}
.nav-links a {
  font-size: 13px;
  color: var(--text1);
  opacity: 0.7;
  transition:
    opacity var(--transition),
    color var(--transition);
}
.nav-links a:hover {
  opacity: 1;
  color: var(--accent1);
}
.theme-btn {
  background: none;
  border: 1px solid var(--border-accent);
  color: var(--accent1);
  padding: 5px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  font-family: inherit;
  font-weight: 500;
  transition: background var(--transition);
}
.theme-btn:hover {
  background: var(--theme-btn-bg-hover);
}

/* ── Layout ── */
section {
  padding: 5rem 2rem;
  max-width: 900px;
  margin: 0 auto;
}

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: var(--nav-h);
  max-width: 900px;
  margin: 0 auto;
  padding-left: 2rem;
  padding-right: 2rem;
  overflow: hidden;
}

.hero-grid-canvas {
  position: absolute;
  pointer-events: none;
  z-index: 0;
}
.hero-grid-tl {
  top: 0;
  left: 0;
}
.hero-grid-br {
  bottom: 0;
  right: 0;
}

.hero-eyebrow,
.hero h1,
.hero p,
.hero-actions {
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  font-size: 16px;
  letter-spacing: 0.14em;
  color: var(--accent1);
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  opacity: 0.85;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text1);
  margin-bottom: 1.25rem;
}
.hero h1 span {
  color: var(--accent1);
}
.hero p {
  font-size: 1rem;
  color: var(--text1);
  opacity: 0.65;
  max-width: 480px;
  margin-bottom: 2.25rem;
}
.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--accent1);
  color: var(--hero-btn-primary-color);
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  padding: 11px 24px;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition:
    opacity var(--transition),
    transform var(--transition);
}
.btn-primary:hover {
  opacity: 0.88;
  transform: translateY(-1px);
  color: var(--accent2);
}
.btn-secondary {
  background: transparent;
  color: var(--text1);
  font-size: 14px;
  font-family: inherit;
  padding: 10px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border-white);
  cursor: pointer;
  transition:
    border-color var(--transition),
    transform var(--transition);
}
.btn-secondary:hover {
  border-color: var(--accent1);
  transform: translateY(-1px);
}

/* ── Section Headers ── */
.section-label {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent1);
  margin-bottom: 0.5rem;
}
.section-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--text1);
  margin-bottom: 0.5rem;
}
.section-divider {
  width: 100px;
  height: 2px;
  background: var(--accent2);
  margin: 0.75rem 0 2.5rem;
  border-radius: 2px;
}

/* ── About ── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}
.about-text p {
  color: var(--text1);
  opacity: 0.8;
  font-size: 0.95rem;
  margin-bottom: 1rem;
}
.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 1.5rem;
}
.tag {
  font-size: 12px;
  padding: 5px 12px;
  border-radius: 2px;
  border: 1px solid var(--border-accent);
  color: var(--accent1);
  background: var(--tag-bg);
}

/* ── Diamond Cluster ── */
.diamond-cluster {
  position: relative;
  width: 340px;
  height: 340px;
  margin: 0 auto;
}

.diamond {
  position: absolute;
  width: 120px;
  height: 120px;
  transform: rotate(45deg);
  cursor: pointer;
  transition: none;
}

.diamond-inner {
  position: absolute;
  inset: 0;
  transform: rotate(-45deg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.diamond-center {
  top: 50%;
  left: 50%;
  margin-top: -55px;
  margin-left: -55px;
  background: var(--tag-bg);
  border: 1.5px solid var(--accent1);
  z-index: 10;
  transition:
    background 0.3s ease,
    transform 0.3s ease;
  animation: center-pulse 2s ease-out infinite;
}
.diamond-center:hover {
  background: rgba(212, 0, 122, 0.2);
  transform: rotate(45deg) scale(1.06);
}

.diamond-hint {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent1);
}
.diamond-cluster:not(.revealed) .diamond-hint::before {
  content: "TL;DR";
}
.diamond-cluster.revealed .diamond-hint::before {
  content: "Close";
  opacity: 0.6;
}

.diamond-card {
  background: var(--bg4);
  border: 1.5px solid var(--accent1);
  opacity: 0;
  pointer-events: none;
  z-index: 5;
}

.diamond-card .hc-icon {
  font-size: 16px;
  line-height: 1;
  margin-bottom: 2px;
}
.diamond-card .hc-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent1);
  line-height: 1.2;
}
.diamond-card .hc-desc {
  font-size: 10px;
  opacity: 0.75;
  line-height: 1.3;
  color: var(--text1);
}

.diamond-cluster.revealed .diamond-card:hover {
  background: var(--chip-bg);
  z-index: 8;
}

@keyframes center-pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(5, 242, 219, 0.6);
  }
  60% {
    box-shadow: 0 0 0 12px rgba(5, 242, 219, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(5, 242, 219, 0);
  }
}

@keyframes diamond-pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(255, 0, 170, 0.966);
    border-color: rgba(5, 242, 219, 0.9);
  }
  50% {
    box-shadow: 0 0 0 7px rgba(5, 242, 219, 0);
    border-color: rgba(5, 242, 219, 0.3);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(5, 242, 219, 0);
    border-color: rgba(5, 242, 219, 0.9);
  }
}

.diamond-cluster.revealed .diamond-card[data-slot="tl"] {
  animation: diamond-pulse 2.4s ease-in-out infinite 0s;
}
.diamond-cluster.revealed .diamond-card[data-slot="tr"] {
  animation: diamond-pulse 2.4s ease-in-out infinite 0.4s;
}
.diamond-cluster.revealed .diamond-card[data-slot="bl"] {
  animation: diamond-pulse 2.4s ease-in-out infinite 0.8s;
}
.diamond-cluster.revealed .diamond-card[data-slot="br"] {
  animation: diamond-pulse 2.4s ease-in-out infinite 1.2s;
}

/* ── Projects ── */
.projects-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 5rem 0 3rem;
  position: relative;
  overflow: visible;
}

.section-header-constrained {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 2rem;
}

.projects-carousel-wrapper {
  position: relative;
  padding: 1rem 4rem 2rem;
}

.projects-carousel {
  display: flex;
  gap: 1.5rem;
  overflow-x: auto;
  scroll-behavior: smooth;
  scrollbar-width: none;
  -ms-overflow-style: none;
  align-items: flex-end;
  padding: 2rem 0.5rem 1rem;
}
.projects-carousel::-webkit-scrollbar {
  display: none;
}

/* ── Project Card ── */
.project-card {
  flex: 0 0 280px;
  height: 380px;
  background: var(--bg3);
  border: 2px solid var(--accent2);
  border-radius: 2px;
  position: relative;
  cursor: pointer;
  overflow: hidden;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.project-card.center {
  transform: translateY(-12px);
  z-index: 5;
  animation: project-pulse 2s ease-in-out infinite;
}
.project-card:hover:not(.center) {
  animation: project-pulse 2s ease-in-out infinite;
}

@keyframes project-pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(216, 4, 141, 0.6);
    border-color: var(--accent2);
  }
  50% {
    box-shadow: 0 0 20px 4px rgba(216, 4, 141, 0);
    border-color: rgba(216, 4, 141, 0.4);
  }
}

.project-image {
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    var(--project-gradient-start),
    var(--project-gradient-end)
  );
  position: relative;
  overflow: hidden;
}
.project-image::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 70%;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    var(--project-overlay-mid) 25%,
    var(--project-overlay-end) 50%
  );
  pointer-events: none;
}
.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-content {
  padding: 1.25rem;
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 2;
}
.project-num {
  font-size: 11px;
  color: var(--accent2);
  font-weight: 600;
  letter-spacing: 0.1em;
  margin-bottom: 0.4rem;
}
.project-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text1);
  margin-bottom: 0.5rem;
  line-height: 1.2;
}
.project-desc {
  font-size: 12px;
  opacity: 0.75;
  line-height: 1.4;
  margin-bottom: 0.75rem;
}
.project-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-bottom: 0.75rem;
}
.stack-tag {
  font-size: 10px;
  padding: 3px 8px;
  border-radius: 2px;
  background: transparent;
  color: var(--accent1);
  border: 1px solid var(--accent1);
}
.project-link {
  font-size: 11px;
  color: var(--accent2);
  font-weight: 500;
  display: inline-block;
  transition: opacity var(--transition);
}
.project-link:hover {
  opacity: 0.7;
}

/* ── Carousel Nav Buttons ── */
.carousel-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: var(--chip-bg);
  border: 1px solid var(--accent1);
  width: 40px;
  height: 40px;
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition:
    background 0.3s ease,
    transform 0.3s ease;
  z-index: 10;
}
.carousel-nav:hover {
  background: var(--chip-bg);
  filter: brightness(1.5);
  transform: translateY(-50%) scale(1.1);
}
.carousel-nav-left {
  left: 0;
}
.carousel-nav-right {
  right: 0;
}
.carousel-nav svg {
  width: 20px;
  height: 20px;
  stroke: var(--accent1);
  stroke-width: 2;
}

/* ── Toolkit ── */
.toolkit-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  min-height: 500px;
}

.toolkit-cluster {
  position: relative;
  width: 400px;
  height: 400px;
  margin: 0 auto;
}

.toolkit-diamond {
  position: absolute;
  width: 140px;
  height: 140px;
  background: var(--bg5);
  border: 2px solid var(--accent1);
  transform: rotate(45deg);
  cursor: pointer;
  transition: all 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
  display: flex;
  align-items: center;
  justify-content: center;
}

.toolkit-diamond-inner {
  transform: rotate(-45deg);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent1);
  text-align: center;
  padding: 10px;
}

.toolkit-diamond[data-category="frontend"] {
  top: 50%;
  left: 50%;
  margin-top: -210px;
  margin-left: -70px;
  animation: toolkit-pulse 2s ease-in-out infinite 0s;
}

.toolkit-diamond[data-category="martech"] {
  top: 50%;
  left: 50%;
  margin-top: -70px;
  margin-left: -210px;
  animation: toolkit-pulse 2s ease-in-out infinite 0.3s;
}

.toolkit-diamond[data-category="design"] {
  top: 50%;
  left: 50%;
  margin-top: -70px;
  margin-left: 70px;
  animation: toolkit-pulse 2s ease-in-out infinite 0.6s;
}

.toolkit-diamond[data-category="backend"] {
  top: 50%;
  left: 50%;
  margin-top: 70px;
  margin-left: -70px;
  animation: toolkit-pulse 2s ease-in-out infinite 0.9s;
}

.toolkit-diamond:hover {
  background: var(--chip-bg);
  border-color: var(--accent2);
  transform: rotate(45deg) scale(1.08);
}

.toolkit-diamond.active {
  border-color: var(--accent2);
  background: rgba(212, 0, 122, 0.15);
  animation: none !important;
}

.toolkit-diamond[data-category="frontend"].active {
  margin-top: -240px;
  margin-left: -70px;
  transform: rotate(0deg) scale(1);
}

.toolkit-diamond[data-category="martech"].active {
  margin-top: -70px;
  margin-left: -240px;
  transform: rotate(0deg) scale(1);
}

.toolkit-diamond[data-category="design"].active {
  margin-top: -70px;
  margin-left: 90px;
  transform: rotate(0deg) scale(1);
}

.toolkit-diamond[data-category="backend"].active {
  margin-top: 100px;
  margin-left: -70px;
  transform: rotate(0deg) scale(1);
}

.toolkit-diamond.active .toolkit-diamond-inner {
  transform: rotate(0deg);
}

@keyframes toolkit-pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(5, 242, 219, 0.5);
    border-color: var(--accent1);
  }
  50% {
    box-shadow: 0 0 0 15px rgba(5, 242, 219, 0);
    border-color: rgba(5, 242, 219, 0.4);
  }
}

/* Info Panel */
.toolkit-info {
  position: relative;
  min-height: 350px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.toolkit-prompt {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  opacity: 1;
  transition: opacity 0.3s ease;
}

.toolkit-prompt-close {
  font-size: 14px;
  letter-spacing: 0.12em;
  color: var(--accent2);
  font-weight: 500;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.toolkit-prompt-close::after {
  content: "";
  display: inline-block;
  width: 12px;
  height: 12px;
  background: var(--tag-bg);
  border: 1px solid var(--accent1);
  transform: rotate(45deg);
}
.toolkit-prompt-learn {
  font-size: 14px;
  letter-spacing: 0.12em;
  color: var(--accent2);
  font-weight: 500;
  text-transform: uppercase;
  margin-left: 35px;
}

.toolkit-info.has-content .toolkit-prompt {
  opacity: 0;
  pointer-events: none;
  position: absolute;
}

.toolkit-content {
  opacity: 0;
  pointer-events: none;
  position: absolute;
  left: 0;
  right: 0;
  transition: opacity 0.4s ease;
}

.toolkit-content.active {
  opacity: 1;
  pointer-events: auto;
  position: relative;
}

.toolkit-heading {
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--accent2);
  font-weight: 700;
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.toolkit-description {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text1);
  opacity: 0.8;
  margin-bottom: 1.5rem;
}

.toolkit-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.toolkit-chips .chip {
  font-size: 12px;
  padding: 5px 12px;
  border-radius: 5px;
  background: var(--chip-bg);
  color: var(--accent1);
  opacity: 1;
  border: 1px solid var(--chip-border);
}

.toolkit-content-square {
  display: none;
}

.toolkit-back-btn {
  display: none;
}

/* ── Contact ── */
.contact-box {
  background: var(--bg2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 2.5rem;
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}
.contact-headline {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}
.contact-sub {
  font-size: 14px;
  opacity: 0.65;
  max-width: 380px;
  margin: 0 auto 2rem;
}
.contact-links {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.contact-link {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text1);
  border: 1px solid var(--border-white);
  padding: 9px 18px;
  border-radius: var(--radius);
  transition:
    border-color var(--transition),
    color var(--transition);
}
.contact-link:hover {
  border-color: var(--accent1);
  color: var(--accent1);
}
.contact-link svg {
  flex-shrink: 0;
}
.contact-closing {
  font-size: 12px;
  margin-top: 2rem;
  opacity: 0.5;
  font-style: italic;
}

/* ── Footer ── */
footer {
  text-align: center;
  padding: 2rem;
  font-size: 12px;
  opacity: 0.35;
  border-top: 1px solid var(--border-white-faint);
}

/* ── Responsive ── */
@media (max-width: 860px) {
  .about-grid {
    grid-template-columns: 1fr;
  }
  .diamond-cluster {
    margin-top: 2rem;
  }
  .toolkit-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .toolkit-cluster {
    width: 350px;
    height: 350px;
  }
  .toolkit-diamond {
    width: 120px;
    height: 120px;
  }
}

/* Mobile Toolkit Styles */
@media (max-width: 640px) {
  nav {
    padding: 0 1rem;
  }
  .nav-links a {
    display: none;
  }
  .theme-btn {
    display: flex;
  }
  section {
    padding: 3.5rem 1.25rem;
  }
  .hero {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }
  .projects-grid {
    grid-template-columns: 1fr;
  }

  .toolkit-layout {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: auto;
    position: relative;
  }

  .toolkit-prompt {
    order: 2;
    margin-bottom: 2rem;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0.5rem;
  }

  .toolkit-prompt-learn {
    margin-left: 0;
  }

  .toolkit-cluster {
    order: -1;
    width: 280px;
    height: 280px;
    transition:
      opacity 0.5s ease,
      transform 0.5s ease;
  }

  .toolkit-layout.mobile-content-active .toolkit-cluster {
    opacity: 0;
    transform: scale(0.2);
    pointer-events: none;
    position: absolute;
  }

  .toolkit-layout.mobile-content-active .toolkit-prompt {
    opacity: 0;
    pointer-events: none;
    position: absolute;
  }

  .toolkit-diamond {
    width: 90px;
    height: 90px;
  }

  .toolkit-diamond-inner {
    font-size: 9px;
  }

  .toolkit-diamond[data-category="frontend"] {
    margin-top: -125px;
    margin-left: -45px;
  }

  .toolkit-diamond[data-category="martech"] {
    margin-top: -45px;
    margin-left: -120px;
  }

  .toolkit-diamond[data-category="design"] {
    margin-top: -45px;
    margin-left: 30px;
  }

  .toolkit-diamond[data-category="backend"] {
    margin-top: 30px;
    margin-left: -45px;
  }

  .toolkit-info {
    width: 100%;
    min-height: 0;
    order: 1;
    opacity: 1;
    pointer-events: none;
    transform: translateY(40px) scale(0.95);
    transition:
      opacity 0.6s cubic-bezier(0.77, 0, 0.18, 1),
      transform 0.6s cubic-bezier(0.77, 0, 0.18, 1);
  }

  .toolkit-layout.mobile-content-active .toolkit-info {
    opacity: 1;
    pointer-events: auto;
    position: relative;
    transform: translateY(0) scale(1);
  }

  .toolkit-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 1rem;
  }

  .toolkit-content.active {
    animation: mobile-content-in 0.6s cubic-bezier(0.77, 0, 0.18, 1) both;
  }

  .toolkit-content-square {
    width: 120px;
    height: 120px;
    background: var(--chip-bg);
    border: 1px solid var(--accent2);
    border-radius: 1px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--accent1);
    margin-bottom: 1.5rem;
    transform: rotate(0deg);
  }

  .toolkit-heading {
    text-align: center;
    font-size: 14px;
    margin-bottom: 1rem;
  }

  .toolkit-description {
    text-align: center;
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 1.5rem;
  }

  .toolkit-chips {
    justify-content: center;
    margin-bottom: 2.5rem;
  }

  .toolkit-back-btn {
    background: transparent;
    color: var(--accent2);
    border: 1px solid var(--accent2);
    padding: 0.7rem 2rem;
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    letter-spacing: 0.08em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition:
      background 0.2s ease,
      color 0.2s ease;
    margin-top: auto;
  }

  .toolkit-back-btn:active {
    background: var(--accent2);
    color: var(--bg);
  }

  .back-arrow {
    font-size: 16px;
    transition: transform 0.2s ease;
  }

  .toolkit-back-btn:hover .back-arrow {
    transform: translateX(-3px);
  }

  /* Mobile Projects */
  .projects-carousel-wrapper {
    padding: 2rem 3.5rem 2rem 3.5rem;
  }

  .projects-carousel {
    gap: 1rem;
    padding: 1rem 0.5rem;
  }

  .project-card {
    flex: 0 0 260px;
    height: 360px;
  }

  .project-content {
    padding: 1rem;
  }

  .project-title {
    font-size: 0.95rem;
  }

  .project-desc {
    font-size: 11px;
  }

  .carousel-nav {
    width: 36px;
    height: 36px;
  }

  .carousel-nav-left {
    left: 0.5rem;
  }

  .carousel-nav-right {
    right: 0.5rem;
  }

  .carousel-nav svg {
    width: 16px;
    height: 16px;
  }

  @keyframes mobile-content-in {
    0% {
      opacity: 0;
      transform: translateY(40px) scale(0.97);
    }
    100% {
      opacity: 1;
      transform: translateY(0) scale(1);
    }
  }
}

@media (max-width: 480px) {
  .nav-links {
    gap: 0.75rem;
  }

  .toolkit-cluster {
    width: 260px;
    height: 260px;
  }
  .toolkit-diamond {
    width: 80px;
    height: 80px;
  }

  .diamond {
    position: absolute;
    width: 100px;
    height: 100px;
    cursor: pointer;
    transition: none;
  }

  /* Even smaller screens */
  .projects-carousel-wrapper {
    padding: 2rem 3rem;
  }

  .project-card {
    flex: 0 0 240px;
    height: 340px;
  }

  .carousel-nav {
    width: 32px;
    height: 32px;
  }

  .toolkit-diamond-inner {
    font-size: 8px;
  }
}