/* ============================================================================
   DESIGN SYSTEM & GLOBALS
   ========================================================================== */

:root {
  --ink: #0d0f0e;
  --paper: #f4f0dc;
  --muted: #c9c6b7;
  --accent: #a88bff;
  --accent-deep: #5f42ac;
  --pad: clamp(1.25rem, 5vw, 5rem);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--paper);
  background: var(--ink);
  font-family: "DM Sans", sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

/* ============================================================================
   LAYOUT: Background & Navigation
   ========================================================================== */

.grain {
  position: fixed;
  z-index: 20;
  inset: 0;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.7'/%3E%3C/svg%3E");
}

.case-nav {
  position: fixed;
  z-index: 10;
  top: 1.2rem;
  left: 50%;
  width: min(42rem, calc(100% - 2rem));
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  padding: 0.75rem 1rem;
  color: var(--paper);
  background: rgba(13, 15, 14, 0.58);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 3rem;
  backdrop-filter: blur(16px);
  transform: translateX(-50%);
}

.case-brand {
  font-weight: 700;
}

.case-nav nav {
  display: flex;
  justify-content: center;
  gap: 2rem;
  font-size: 0.9rem;
}

.close-link {
  font-size: 1.6rem;
  line-height: 0.7;
}

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

.case-hero {
  min-height: 100svh;
  padding: 9rem var(--pad) 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 75% 15%, rgba(255, 255, 255, 0.35), transparent 24rem),
    linear-gradient(135deg, var(--accent), var(--accent-deep));
  overflow: hidden;
}

.case-intro h1 {
  max-width: 69rem;
  margin: 0;
  font-family: "Manrope", sans-serif;
  font-size: clamp(3.7rem, 8.8vw, 6.5rem);
  font-weight: 500;
  letter-spacing: -0.05em;
  line-height: 1;
}

.case-index,
.eyebrow,
.detail-label {
  margin: 0 0 1rem;
  font-size: 0.75rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.case-details {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin: 5rem 0 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(13, 15, 14, 0.4);
}

.case-details p {
  margin: 0;
  line-height: 1.55;
}

.detail-label {
  opacity: 0.55;
}

.hero-visual {
  width: min(62rem, 88vw);
  margin-left: auto;
  transform: translateY(2rem);
}

/* ============================================================================
   BROWSER & PRODUCT MOCKUPS
   ========================================================================== */

.browser-frame,
.product-screen {
  padding: 0.55rem;
  background: #e9e8e1;
  border: 1px solid rgba(13, 15, 14, 0.4);
  border-radius: 0.75rem;
  box-shadow: 0 2rem 5rem rgba(13, 15, 14, 0.3);
}

.browser-bar {
  display: flex;
  gap: 0.35rem;
  padding: 0.15rem 0.25rem 0.7rem;
}

.browser-bar span {
  width: 0.45rem;
  height: 0.45rem;
  background: #aaa;
  border-radius: 50%;
}

.browser-content {
  min-height: 30rem;
  display: grid;
  grid-template-columns: 10rem 1fr;
  background: #faf9f3;
  border-radius: 0.35rem;
  overflow: hidden;
}

.mock-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  padding: 2rem 1.2rem;
  color: white;
  background: var(--accent-deep);
}

.mock-sidebar b {
  margin-bottom: 2rem;
  letter-spacing: 0.15em;
}

.mock-sidebar i {
  height: 0.5rem;
  background: rgba(255, 255, 255, 0.32);
  border-radius: 1rem;
}

.mock-main {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(2rem, 4vw, 6rem);
  color: var(--ink);
}

.mock-kicker {
  margin-bottom: 1rem;
  opacity: 0.55;
}

.mock-main strong {
  max-width: 33rem;
  font: 600 clamp(2.3rem, 5vw, 5rem) / 0.95 "Manrope";
  letter-spacing: -0.06em;
}

.mock-search {
  width: 80%;
  height: 2.8rem;
  margin-top: 2rem;
  border: 1px solid #bbb;
  border-radius: 2rem;
}

.mock-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-top: 2rem;
}

.mock-cards i {
  height: 5rem;
  background: color-mix(in srgb, var(--accent) 35%, white);
  border-radius: 0.4rem;
}

/* ============================================================================
   CASE SECTIONS & TYPOGRAPHY
   ========================================================================== */

.case-section {
  padding: clamp(3rem, 6vw, 6rem) var(--pad);
}

.section-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(3rem, 4vw, 6rem);
}

.case-section h2,
.quote-band h2 {
  margin: 0;
  font: 500 clamp(2.5rem, 6vw, 3.5rem) / 0.98 "Manrope";
  letter-spacing: -0.065em;
  line-height: 1.15;
}

.hyperlink {
  text-decoration: underline;
}

.hyperlink:hover {
  font-weight: 600;
}

.body-copy,
.statement-copy {
  margin: 0;
  font-size: clamp(1.25rem, 12vw, 1.5rem);
  line-height: 1.5;
}

/* ============================================================================
   IMPACT & QUOTE SECTIONS
   ========================================================================== */

.impact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 4rem;
}

.impact div {
  padding-top: 1rem;
  border-top: 1px solid rgba(244, 240, 220, 0.35);
}

.impact strong {
  display: block;
  font: 500 clamp(2.5rem, 5vw, 5rem) / 1 "Manrope";
  letter-spacing: -0.05em;
}

.impact span {
  display: block;
  margin-top: 0.6rem;
  color: var(--muted);
}

.statement-section {
  color: var(--ink);
  background: var(--paper);
}

.statement-section h2 {
  line-height: 1;
  margin: 0;
  font: 500 clamp(2.5rem, 6vw, 3.5rem) / 0.98 "Manrope";
  letter-spacing: -0.065em;
}

.statement-copy {
  margin: 2rem 0 0 auto;
}

.quote-band {
  padding: clamp(6rem, 12vw, 12rem) var(--pad);
  color: var(--ink);
  background: var(--accent);
}

.quote-band p {
  margin: 0 0 2rem;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.13em;
}

.quote-band h2 {
  max-width: 72rem;
  margin: 0;
  font: 500 clamp(2.5rem, 6vw, 3.5rem) / 0.98 "Manrope";
  letter-spacing: -0.065em;
  line-height: 1.15;
}

/* ============================================================================
   SECTION BACKGROUNDS
   ========================================================================== */

.solution {
  background: #171918;
}

.user {
  color: var(--ink);
  background: var(--paper);
}

.process {
  color: var(--ink);
  background: var(--paper);
}

/* ============================================================================
   FEATURES & LAYOUTS
   ========================================================================== */

.feature {
  margin-top: 7rem;
}

.feature--wide {
  display: grid;
  grid-template-columns: 0.48fr 1.52fr;
  gap: 3rem;
  align-items: end;
}

.feature-copy span {
  color: var(--accent);
}

.feature-copy h3 {
  margin: 1rem 0;
  font: 500 clamp(1.5rem, 4vw, 2.5rem) / 1 "Manrope";
  letter-spacing: -0.05em;
}

.feature-copy p {
  color: var(--muted);
  line-height: 1.55;
}

.product-screen {
  min-height: 38rem;
  color: var(--ink);
}

.screen-top {
  display: flex;
  justify-content: space-between;
  padding: 1.3rem;
  border-bottom: 1px solid #ccc;
}

.screen-top i {
  width: 2rem;
  height: 2rem;
  background: var(--accent);
  border-radius: 50%;
}

/* Dashboard Grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 1rem;
  padding: clamp(1.5rem, 4vw, 4rem);
}

.dashboard-welcome {
  grid-row: span 3;
  min-height: 25rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 2rem;
  background: var(--accent);
  border-radius: 0.5rem;
}

.dashboard-welcome strong {
  max-width: 24rem;
  font: 600 clamp(2.5rem, 4vw, 4.5rem) / 0.95 "Manrope";
  letter-spacing: -0.055em;
}

.dashboard-welcome span,
.dashboard-card span {
  height: 0.45rem;
  width: 70%;
  margin-top: 1rem;
  background: rgba(13, 15, 14, 0.25);
  border-radius: 1rem;
}

.dashboard-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 1.5rem;
  background: white;
  border: 1px solid #ccc;
  border-radius: 0.5rem;
}

.dashboard-card i {
  width: 2rem;
  height: 2rem;
  margin-bottom: 1rem;
  background: var(--accent);
  border-radius: 50%;
}

/* Feature Pair */
.feature-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.feature-pair .feature {
  display: flex;
  flex-direction: column;
  padding: 2rem;
  background: #242725;
  border-radius: 0.5rem;
  overflow: hidden;
}

/* Phone Screen */
.phone-screen {
  width: min(19rem, 80%);
  min-height: 34rem;
  margin: 4rem auto -5rem;
  padding: 4rem 1.5rem 2rem;
  color: var(--ink);
  background: var(--paper);
  border: 0.6rem solid #050505;
  border-radius: 2.5rem;
  box-shadow: 0 2rem 4rem rgba(0, 0, 0, 0.35);
}

.phone-notch {
  width: 6rem;
  height: 1.4rem;
  margin: -3.3rem auto 3rem;
  background: #050505;
  border-radius: 1rem;
}

.phone-screen small,
.phone-screen strong {
  display: block;
}

.phone-screen strong {
  margin: 1rem 0 3rem;
  font: 600 2.2rem / 1 "Manrope";
  letter-spacing: -0.05em;
}

.phone-screen i,
.message-screen i {
  display: block;
  height: 4rem;
  margin-top: 0.8rem;
  background: color-mix(in srgb, var(--accent) 28%, white);
  border-radius: 0.5rem;
}

/* Message Screen */
.message-screen {
  min-height: 27rem;
  margin-top: 4rem;
  padding: 2rem;
  color: var(--ink);
  background: var(--paper);
  border-radius: 0.6rem;
  transform: rotate(2deg) translateY(1.5rem);
}

.message-screen div {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.message-screen div span {
  width: 2.8rem;
  height: 2.8rem;
  background: var(--accent);
  border-radius: 50%;
}

.message-screen p {
  margin: 4rem 0 2rem;
  font: 600 2.3rem / 1 "Manrope";
  letter-spacing: -0.05em;
}

/* ============================================================================
   PROCESS SECTION
   ========================================================================== */

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 7rem;
  border-top: 1px solid var(--ink);
}

.process-steps div {
  min-height: 16rem;
  padding: 1.4rem;
  border-right: 1px solid var(--ink);
}

.process-steps div:last-child {
  border: 0;
}

.process-steps span,
.process-steps strong {
  display: block;
}

.process-steps strong {
  margin-top: 5rem;
  margin-bottom: 0.5rem;
  font: 500 2rem "Manrope";
  line-height: 1;
}

.process-steps caption {
  max-width: 12rem;
  line-height: 0.85;
}

.process-steps .full-width {
  grid-column: 1 / -1;
  min-height: auto;
  border: 0;
}

/* ============================================================================
   NEXT PROJECT SECTION
   ========================================================================== */

.next-project {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  padding: 5rem var(--pad);
  color: var(--ink);
  background: var(--accent);
  overflow: hidden;
}

.next-project span {
  grid-column: 1 / -1;
  margin-bottom: 2rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.next-project strong {
  font: 500 clamp(4rem, 10vw, 11rem) / 0.85 "Manrope";
  letter-spacing: -0.08em;
}

.next-project i {
  align-self: end;
  font-size: 4rem;
  font-style: normal;
}

/* ============================================================================
   IMAGE LIGHTBOX
   ========================================================================== */

.expandable-image {
  cursor: zoom-in;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.expandable-image:hover {
  transform: scale(1.01);
  opacity: 0.92;
}

.image-lightbox {
  position: fixed;
  z-index: 100;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 4rem var(--pad);
  background: rgba(0, 0, 0, 0.86);
  backdrop-filter: blur(12px);
}

.image-lightbox.is-open {
  display: flex;
  flex-direction: column;
}

.image-lightbox img {
  max-width: min(100%, 80rem);
  max-height: 82vh;
  object-fit: contain;
  border-radius: 0.75rem;
  box-shadow: 0 2rem 5rem rgba(0, 0, 0, 0.5);
}

.lightbox-close {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  width: 3rem;
  height: 3rem;
  color: white;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 50%;
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
}

#lightbox-caption {
  max-width: 52rem;
  margin: 1rem auto 0;
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.95rem;
  line-height: 1.5;
  text-align: center;
}

body.lightbox-open {
  overflow: hidden;
}

/* ============================================================================
   INSIGHT CARDS
   ========================================================================== */

.insight-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 4rem;
}

.insight-card {
  padding: 1.5rem;
  background: #242725;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0.75rem;
}

.insight-card span {
  display: block;
  margin-bottom: 1.5rem;
  color: var(--accent);
  font-size: 0.8rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.insight-card h3 {
  margin: 0 0 1rem;
  font: 500 clamp(1.5rem, 2vw, 2.25rem) / 1 "Manrope";
  letter-spacing: -0.04em;
}

.insight-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

/* ============================================================================
   RESPONSIVE: Tablet
   ========================================================================== */

@media (max-width: 760px) {
  .case-nav nav {
    display: none;
  }

  .case-nav {
    width: calc(100% - 1.5rem);
  }

  .case-brand {
    grid-column: 1;
  }

  .close-link {
    grid-column: 3;
  }

  .case-hero {
    padding-top: 8rem;
  }

  .case-details {
    grid-template-columns: 1fr 1fr;
    margin-top: 4rem;
  }

  .hero-visual {
    width: 110%;
  }

  .browser-content {
    min-height: 19rem;
    grid-template-columns: 4.5rem 1fr;
  }

  .mock-sidebar {
    padding: 1rem 0.6rem;
  }

  .mock-sidebar i {
    display: none;
  }

  .mock-main {
    padding: 1.5rem;
  }

  .mock-main strong {
    font-size: 2.2rem;
  }

  .section-grid,
  .feature--wide,
  .feature-pair {
    grid-template-columns: 1fr;
  }

  .section-grid {
    gap: 2rem;
  }

  .feature--wide {
    align-items: initial;
  }

  .product-screen {
    min-height: 27rem;
  }

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

  .dashboard-welcome {
    grid-row: auto;
    min-height: 15rem;
  }

  .dashboard-card {
    display: none;
  }

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

  .process-steps div:nth-child(2) {
    border-right: 0;
  }

  .process-steps div {
    border-bottom: 1px solid var(--ink);
  }

  .next-project {
    padding-block: 4rem;
  }
}

/* ============================================================================
   ACCESSIBILITY: Reduced Motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}