/* ==========================================================================
   MCFWebs — Editorial Design System
   Warm paper · Luxury editorial · Japanese minimalism
   ========================================================================== */

/* --- Custom Properties --- */
:root {
  --paper: #f9f7f2;
  --paper-warm: #f5f0e8;
  --paper-dim: #ebe6df;
  --paper-bright: #fdfbf8;
  --ink: #1a1a1a;
  --ink-soft: #4a4a4a;
  --ink-light: #8a8a8a;
  --crimson: #bc002d;
  --crimson-light: #df2842;
  --crimson-fade: rgba(188, 0, 45, 0.08);
  --stone: #c4bfb8;
  --stone-light: #e5e0d9;
  --border: rgba(26, 26, 26, 0.08);
  --border-soft: rgba(26, 26, 26, 0.04);

  --font-display: 'Playfair Display', 'Times New Roman', serif;
  --font-body: 'Hanken Grotesk', 'Inter', -apple-system, sans-serif;

  --unit: 8px;
  --gutter: 32px;
  --margin-mobile: 24px;
  --margin-desktop: 80px;
  --section-gap: 180px;
  --container-max: 1440px;

  --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* --- Paper Texture --- */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

::selection {
  background: var(--crimson);
  color: white;
}

/* --- Typography --- */
.display-xl {
  font-family: var(--font-display);
  font-size: clamp(56px, 8vw, 120px);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.03em;
}

.display-lg {
  font-family: var(--font-display);
  font-size: clamp(40px, 5.5vw, 72px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.display-md {
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.headline-lg {
  font-family: var(--font-display);
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 600;
  line-height: 1.25;
}

.headline-md {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.2vw, 28px);
  font-weight: 500;
  line-height: 1.3;
}

.body-lg {
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.65;
  letter-spacing: 0.01em;
}

.body-md {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 400;
  line-height: 1.65;
  color: var(--ink-soft);
}

.label-caps {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* --- Container --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--margin-mobile);
}

@media (min-width: 768px) {
  .container { padding-inline: var(--margin-desktop); }
}

/* --- Section --- */
.section {
  padding-block: var(--section-gap);
}

@media (max-width: 767px) {
  .section { padding-block: 100px; }
}

.section-label {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--crimson);
  margin-bottom: 20px;
}

.section-label::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--crimson);
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 28px var(--margin-mobile);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.6s var(--ease-out-expo);
}

@media (min-width: 768px) {
  .nav { padding: 32px var(--margin-desktop); }
}

.nav-scrolled {
  background: rgba(249, 247, 242, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding-block: 16px;
  border-bottom: 1px solid rgba(26, 26, 26, 0.04);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.015);
}

.nav-logo {
  font-size: 13px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--ink);
}

.nav-links {
  display: none;
  gap: 40px;
  align-items: center;
}

@media (min-width: 768px) {
  .nav-links { display: flex; }
}

.nav-link {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--ink-soft);
  transition: color 0.4s var(--ease-out-expo);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--ink);
  transition: width 0.5s var(--ease-out-expo);
}

.nav-link:hover { color: var(--ink); }
.nav-link:hover::after { width: 100%; }

.nav-cta {
  padding: 10px 28px;
  background: var(--ink);
  color: var(--paper);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  transition: background 0.4s var(--ease-out-expo);
  position: relative;
  overflow: hidden;
}

.nav-cta:hover { background: var(--crimson); }

/* Mobile toggle */
.nav-mobile-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

@media (min-width: 768px) {
  .nav-mobile-toggle { display: none; }
}

.nav-mobile-toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--ink);
  transition: all 0.4s var(--ease-in-out);
}

/* Mobile nav overlay */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: var(--paper);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 40px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s var(--ease-out-expo), visibility 0.5s var(--ease-out-expo);
}

.mobile-nav.open { opacity: 1; visibility: visible; }

.mobile-nav-link {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 600;
  color: var(--ink);
  opacity: 0.5;
  transition: opacity 0.4s var(--ease-out-expo);
}

.mobile-nav-link:hover { opacity: 1; }

.mobile-nav-close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
  font-size: 20px;
  opacity: 0.5;
  transition: opacity 0.3s;
}

.mobile-nav-close:hover { opacity: 1; }

/* ==================== INK TRAIL ==================== */
.ink-trail {
  position: fixed;
  left: 32px;
  top: 0;
  bottom: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.3;
  transition: opacity 0.6s;
}

@media (min-width: 768px) {
  .ink-trail { left: 48px; }
}

@media (max-width: 767px) {
  .ink-trail { display: none; }
}

.ink-trail svg {
  height: 100%;
  width: 2px;
}

.ink-trail-line {
  stroke: var(--ink);
  stroke-width: 1;
  fill: none;
  stroke-linecap: round;
  stroke-dasharray: 2000;
  stroke-dashoffset: 2000;
  transition: stroke-dashoffset 0.1s linear;
}

/* ==================== FEATURED WORK ==================== */
.section-work {
  padding-bottom: var(--section-gap);
}

.work-intro {
  margin-bottom: 100px;
}

@media (min-width: 768px) {
  .work-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
  }
}

.work-intro-label {
  margin-bottom: 16px;
}

.work-intro-text {
  max-width: 460px;
}

/* Project spread — full-viewport editorial showcase */
.project-spread {
  position: relative;
  width: 100%;
  min-height: 90vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  margin-bottom: 40px;
}

@media (min-width: 768px) {
  .project-spread {
    min-height: 85vh;
    margin-bottom: 60px;
  }
}

.project-spread:last-child {
  margin-bottom: 0;
}

/* Background — typographic color field */
.project-bg {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.project-bg-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(180px, 25vw, 400px);
  line-height: 1;
  letter-spacing: -0.04em;
  user-select: none;
  opacity: 0.04;
  white-space: nowrap;
  transition: opacity 1.2s var(--ease-out-expo), transform 1.2s var(--ease-out-expo);
}

.project-spread:hover .project-bg-text {
  opacity: 0.08;
  transform: scale(1.04) translate(12px, -6px);
}

/* Project spread overlay content */
.project-content {
  position: relative;
  z-index: 2;
  width: 100%;
  padding: 60px var(--margin-mobile);
  background: linear-gradient(to top, rgba(249,247,242,0.95) 30%, transparent);
}

@media (min-width: 768px) {
  .project-content {
    padding: 80px var(--margin-desktop);
  }
}

.project-number {
  display: block;
  margin-bottom: 8px;
  color: var(--crimson);
  font-weight: 500;
}

.project-title {
  margin-bottom: 12px;
  transition: transform 0.6s var(--ease-out-expo);
}

.project-spread:hover .project-title {
  transform: translateX(8px);
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 24px;
  color: var(--ink-light);
}

.project-desc {
  max-width: 480px;
  margin-bottom: 32px;
}

.project-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--ink);
  transition: gap 0.4s var(--ease-out-expo);
}

.project-spread:hover .project-cta {
  gap: 16px;
}

.project-cta-arrow {
  transition: transform 0.4s var(--ease-out-expo);
}

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

/* Crimson accent line on hover */
.project-accent {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--crimson);
  transition: width 0.8s var(--ease-out-expo);
  z-index: 3;
}

.project-spread:hover .project-accent {
  width: 100%;
}

/* Background color variants */
.project-bg-1 { background: linear-gradient(135deg, #f5f0e8 0%, #ebe6df 100%); }
.project-bg-1 .project-bg-text { color: var(--ink); }

.project-bg-2 { background: linear-gradient(135deg, #f0ece4 0%, #e5dfd5 100%); }
.project-bg-2 .project-bg-text { color: var(--ink); }

/* ==================== CAPABILITIES ==================== */
.capabilities-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 60px;
}

@media (min-width: 768px) {
  .capabilities-grid {
    grid-template-columns: 1fr 1fr;
    gap: 80px;
  }
}

.capabilities-desc {
  max-width: 380px;
}

.capabilities-title {
  margin-bottom: 20px;
}

.capabilities-body {
  color: var(--ink-light);
}

.capabilities-list {
  display: flex;
  flex-direction: column;
}

.capability-item {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-inline: 16px;
  padding-block: 24px;
  border-bottom: 0.5px solid var(--border);
  cursor: pointer;
  transition: border-color 0.4s var(--ease-out-expo);
  position: relative;
  overflow: hidden;
}

.capability-item:first-child {
  border-top: 0.5px solid var(--border);
}

.capability-item::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--crimson-fade), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.6s var(--ease-out-expo);
  z-index: 0;
  pointer-events: none;
}

.capability-item:hover::before {
  transform: scaleX(1);
}

.capability-item:hover {
  border-color: var(--crimson-fade);
}

.capability-index {
  font-size: 12px;
  font-weight: 500;
  color: var(--ink-light);
  letter-spacing: 0.1em;
  min-width: 32px;
  font-feature-settings: 'tnum';
  position: relative;
  z-index: 1;
}

.capability-name {
  font-family: var(--font-display);
  font-size: clamp(20px, 2vw, 26px);
  font-weight: 600;
  transition: transform 0.5s var(--ease-out-expo), color 0.4s var(--ease-out-expo);
  position: relative;
  z-index: 1;
}

.capability-item:hover .capability-name {
  transform: translateX(8px);
  color: var(--crimson);
}

.capability-arrow {
  margin-left: auto;
  color: var(--crimson);
  opacity: 0;
  transform: translateX(-12px);
  transition: opacity 0.4s var(--ease-out-expo), transform 0.4s var(--ease-out-expo);
  font-size: 16px;
  line-height: 1;
  position: relative;
  z-index: 1;
}

.capability-item:hover .capability-arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ==================== PROCESS (S-curve) ==================== */
.process-container {
  position: relative;
  padding-top: 40px;
}

.process-svg {
  display: none;
}

@media (min-width: 768px) {
  .process-svg {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
  }

  .process-path {
    fill: none;
    stroke: var(--border-soft);
    stroke-width: 1;
  }

  .process-path-progress {
    fill: none;
    stroke: var(--crimson);
    stroke-width: 1.5;
    stroke-dasharray: 2000;
    stroke-dashoffset: 2000;
    transition: stroke-dashoffset 0.3s linear;
  }
}

.process-steps {
  display: flex;
  flex-direction: column;
  gap: 80px;
  position: relative;
  z-index: 1;
}

@media (min-width: 768px) {
  .process-steps {
    gap: 0;
  }
}

.process-step {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  position: relative;
}

@media (min-width: 768px) {
  .process-step {
    grid-template-columns: 1fr 1fr;
    gap: 60px;
  }

  .process-step:nth-child(even) {
    direction: rtl;
  }

  .process-step:nth-child(even) .process-content {
    direction: ltr;
  }

  .process-step:nth-child(even) .process-marker {
    justify-content: flex-start;
  }
}

.process-marker {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 8px;
}

@media (min-width: 768px) {
  .process-marker {
    justify-content: flex-end;
    padding-right: 40px;
  }

  .process-step:nth-child(even) .process-marker {
    padding-right: 0;
    padding-left: 40px;
  }
}

.process-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--crimson);
  flex-shrink: 0;
  opacity: 0;
  transition: opacity 0.6s var(--ease-out-expo);
}

.process-dot.visible {
  opacity: 1;
}

.process-number {
  font-weight: 500;
  color: var(--ink-light);
}

.process-title {
  margin-bottom: 12px;
}

.process-desc {
  max-width: 380px;
}

@media (min-width: 768px) {
  .process-content {
    padding-left: 40px;
  }

  .process-step:nth-child(even) .process-content {
    padding-left: 0;
    padding-right: 40px;
  }
}

/* ==================== RESULTS ==================== */
.results-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-bottom: 100px;
}

@media (min-width: 768px) {
  .results-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 60px;
  }
}

.result-item {
  border-left: 2px solid var(--crimson);
  padding-left: 24px;
}

.result-value {
  display: block;
  margin-bottom: 6px;
  font-feature-settings: 'tnum';
}

.result-label {
  color: var(--ink-light);
  font-weight: 500;
}

.testimonial {
  max-width: 700px;
  padding-top: 60px;
  border-top: 0.5px solid var(--border);
}

.testimonial-text {
  font-style: italic;
  margin-bottom: 28px;
  color: var(--ink);
  font-weight: 500;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 16px;
}

.testimonial-line {
  width: 32px;
  height: 1px;
  background: var(--ink);
}

/* ==================== CTA ==================== */
.cta-section {
  text-align: center;
  padding-block: var(--section-gap);
}

.cta-title {
  max-width: 800px;
  margin: 0 auto 48px;
}

.cta-em {
  color: var(--crimson);
  font-style: italic;
  font-weight: 500;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 18px 48px;
  border: 1px solid var(--ink);
  color: var(--ink);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 600;
  background: transparent;
  transition: all 0.5s var(--ease-out-expo);
  position: relative;
}

.cta-button:hover {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

/* ==================== FOOTER ==================== */
.footer {
  padding: 48px var(--margin-mobile);
  border-top: 0.5px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  text-align: center;
}

@media (min-width: 768px) {
  .footer {
    flex-direction: row;
    justify-content: space-between;
    padding: 48px var(--margin-desktop);
    text-align: left;
  }
}

.footer-logo {
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 600;
}

.footer-links {
  display: flex;
  gap: var(--gutter);
}

.footer-link {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-light);
  transition: color 0.3s var(--ease-out-expo);
  position: relative;
}

.footer-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 0.5px;
  background: currentColor;
  transition: width 0.4s var(--ease-out-expo);
}

.footer-link:hover { color: var(--ink); }
.footer-link:hover::after { width: 100%; }

.footer-copy {
  font-size: 13px;
  color: var(--ink-light);
}

/* ==================== SCROLL REVEAL ==================== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 1s var(--ease-out-expo), transform 1s var(--ease-out-expo);
}

.reveal.visible { opacity: 1; transform: translateY(0); }

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 1s var(--ease-out-expo), transform 1s var(--ease-out-expo);
}

.reveal-left.visible { opacity: 1; transform: translateX(0); }

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 1s var(--ease-out-expo), transform 1s var(--ease-out-expo);
}

.reveal-right.visible { opacity: 1; transform: translateX(0); }

/* ==================== LOADING ==================== */
.loading-screen {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: var(--paper);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.8s var(--ease-out-expo), visibility 0.8s var(--ease-out-expo);
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loading-text {
  color: var(--ink);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 500;
  opacity: 0.4;
  animation: loadingPulse 1.5s var(--ease-out-expo) infinite;
}

@keyframes loadingPulse {
  0%, 100% { opacity: 0.2; }
  50% { opacity: 0.6; }
}

/* ==================== CURSOR FOLLOWER ==================== */
.cursor-follower {
  position: fixed;
  pointer-events: none;
  z-index: 9998;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--crimson);
  transform: translate(-50%, -50%) scale(1);
  will-change: transform;
  opacity: 0;
  transition: opacity 0.5s var(--ease-out-expo), transform 0.5s var(--ease-out-expo), background-color 0.5s var(--ease-out-expo), border 0.5s var(--ease-out-expo);
}

.cursor-follower.visible { opacity: 0.6; }

.cursor-follower.cursor-hover {
  transform: translate(-50%, -50%) scale(4);
  background: transparent;
  border: 1.5px solid var(--crimson);
  opacity: 0.85;
}

/* ==================== BRUSHSTROKE DECORATIVE ==================== */
.brushstroke-motif {
  position: absolute;
  pointer-events: none;
  opacity: 0.03;
  z-index: 0;
}

.brushstroke-motif svg {
  width: 100%;
  height: 100%;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 767px) {
  .project-spread {
    min-height: 70vh;
    margin-bottom: 24px;
  }

  .project-content {
    padding: 40px var(--margin-mobile);
  }

  .results-grid {
    gap: 32px;
    margin-bottom: 60px;
  }

  .cta-button {
    width: 100%;
    justify-content: center;
  }

  .process-steps {
    gap: 48px;
  }
}

@media (hover: none) {
  .capability-arrow { opacity: 1; }
  .capability-item:hover .capability-name { transform: none; }
  .project-title { transform: none !important; }
  .project-cta { gap: 8px !important; }
  .project-spread:hover .project-accent { width: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-left, .reveal-right {
    opacity: 1; transform: none; transition: none;
  }
  .hero-scroll-line { animation: none; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}