/*
 * crowork.ai — Production Stylesheet
 * Identity: Ink & Operations
 *
 * RATIONALE:
 * Crowork reads like a serious operational firm, not an AI startup template,
 * because it borrows its visual language from precision industries — print
 * editorial, legal, and logistics — rather than from tech-demo aesthetics.
 * The palette is off-white paper, near-black ink, and a single warm amber
 * accent that signals caution and authority (think warning labels, gold leaf,
 * Pantone 7510) rather than the neon-cyan of a SaaS dashboard. The type
 * system uses a strong serif for display and a humanist sans for body,
 * creating the contrast of a masthead — not the uniformity of a landing-page
 * generator. Every layout decision (generous whitespace, hairline rules,
 * flush-left alignment) signals that the people here take their work too
 * seriously to dress it in sparkle effects.
 */

/* ============================================================
   0. GOOGLE FONTS IMPORT
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,700;0,800;1,700&family=Inter:wght@400;500;600&display=swap');

/* ============================================================
   1. DESIGN TOKENS
   ============================================================ */
:root {
  /* --- Color System --- */
  /* Ink tones */
  --ink-900: #111009;      /* near-black, primary text */
  --ink-700: #2e2c26;      /* headings, nav */
  --ink-500: #5a5748;      /* secondary text, captions */
  --ink-300: #9b9789;      /* muted text, placeholders */
  --ink-100: #e8e5de;      /* dividers, subtle borders */

  /* Paper tones */
  --paper-50:  #faf9f6;    /* page background */
  --paper-100: #f3f1ec;    /* card backgrounds, off-white surfaces */
  --paper-200: #ebe8e0;    /* inset sections, code blocks */

  /* Accent — amber-gold, single warm note */
  --amber-500: #c8860a;    /* primary accent, CTAs */
  --amber-400: #e09c18;    /* hover state */
  --amber-100: #fdf3dc;    /* tinted backgrounds, tag pills */

  /* Functional */
  --error:   #b03030;
  --success: #2a6e45;

  /* --- Type System --- */
  --font-display: 'Playfair Display', 'Georgia', serif;
  --font-body:    'Inter', 'Helvetica Neue', Arial, sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

  /* Type scale (mobile-first, rem) */
  --text-xs:   0.75rem;   /* 12px */
  --text-sm:   0.875rem;  /* 14px */
  --text-base: 1rem;      /* 16px */
  --text-lg:   1.125rem;  /* 18px */
  --text-xl:   1.25rem;   /* 20px */
  --text-2xl:  1.5rem;    /* 24px */
  --text-3xl:  1.875rem;  /* 30px */
  --text-4xl:  2.25rem;   /* 36px */
  --text-5xl:  3rem;      /* 48px */
  --text-6xl:  3.75rem;   /* 60px */

  /* Leading */
  --leading-tight:  1.2;
  --leading-snug:   1.35;
  --leading-normal: 1.6;
  --leading-relaxed:1.75;

  /* --- Spacing Scale (4px base) --- */
  --space-1:  0.25rem;   /*  4px */
  --space-2:  0.5rem;    /*  8px */
  --space-3:  0.75rem;   /* 12px */
  --space-4:  1rem;      /* 16px */
  --space-5:  1.25rem;   /* 20px */
  --space-6:  1.5rem;    /* 24px */
  --space-8:  2rem;      /* 32px */
  --space-10: 2.5rem;    /* 40px */
  --space-12: 3rem;      /* 48px */
  --space-16: 4rem;      /* 64px */
  --space-20: 5rem;      /* 80px */
  --space-24: 6rem;      /* 96px */
  --space-32: 8rem;      /* 128px */

  /* --- Layout --- */
  --container-max:  1120px;
  --container-text: 680px;   /* optimal reading width */
  --container-wide: 1320px;

  /* --- Borders & Radius --- */
  --radius-sm:   3px;
  --radius-md:   6px;
  --radius-lg:   12px;
  --border-hair: 1px solid var(--ink-100);
  --border-rule: 2px solid var(--ink-900);

  /* --- Shadows (subtle, no glow) --- */
  --shadow-sm:  0 1px 3px rgba(17,16,9,0.06), 0 1px 2px rgba(17,16,9,0.04);
  --shadow-md:  0 4px 12px rgba(17,16,9,0.08), 0 2px 4px rgba(17,16,9,0.04);
  --shadow-lg:  0 12px 32px rgba(17,16,9,0.10), 0 4px 8px rgba(17,16,9,0.05);

  /* --- Transitions --- */
  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:   cubic-bezier(0.5, 0, 0.8, 0);
  --duration-fast:   120ms;
  --duration-base:   240ms;
  --duration-slow:   400ms;
}

/* ============================================================
   2. RESET & BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  background-color: var(--paper-50);
  color: var(--ink-900);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg, video {
  display: block;
  max-width: 100%;
}

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

ul, ol {
  list-style: none;
}

button, input, textarea, select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: var(--leading-tight);
  color: var(--ink-700);
}

p {
  line-height: var(--leading-relaxed);
}

code, kbd, pre {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

/* ============================================================
   3. LAYOUT UTILITIES
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.container--text {
  max-width: var(--container-text);
}

.container--wide {
  max-width: var(--container-wide);
}

.section {
  padding-block: var(--space-20);
}

.section--sm {
  padding-block: var(--space-12);
}

.section--lg {
  padding-block: var(--space-32);
}

/* Horizontal rule with editorial weight */
.rule {
  border: none;
  border-top: var(--border-rule);
  margin-block: var(--space-12);
}

.rule--hair {
  border-top: var(--border-hair);
  margin-block: var(--space-8);
}

/* Grid helpers */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

.grid-4 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .grid-2 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 960px) {
  .grid-3 { grid-template-columns: 1fr 1fr 1fr; }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* ============================================================
   4. TYPOGRAPHY
   ============================================================ */

/* Display headings — editorial, serif */
.display-xl {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 800;
  line-height: var(--leading-tight);
  letter-spacing: -0.02em;
  color: var(--ink-700);
}

.display-lg {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: var(--leading-snug);
  letter-spacing: -0.015em;
  color: var(--ink-700);
}

.display-md {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  line-height: var(--leading-snug);
  color: var(--ink-700);
}

@media (min-width: 640px) {
  .display-xl { font-size: var(--text-5xl); }
  .display-lg { font-size: var(--text-4xl); }
  .display-md { font-size: var(--text-3xl); }
}

@media (min-width: 960px) {
  .display-xl { font-size: var(--text-6xl); }
}

/* Body text utilities */
.text-lg    { font-size: var(--text-lg); line-height: var(--leading-relaxed); }
.text-base  { font-size: var(--text-base); }
.text-sm    { font-size: var(--text-sm); }
.text-xs    { font-size: var(--text-xs); }

.text-muted      { color: var(--ink-500); }
.text-very-muted { color: var(--ink-300); }
.text-accent     { color: var(--amber-500); }
.text-ink        { color: var(--ink-900); }

.text-balance { text-wrap: balance; }

/* Label / eyebrow above headings */
.eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber-500);
}

/* Pull quote */
.pull-quote {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-xl);
  line-height: var(--leading-snug);
  color: var(--ink-700);
  border-left: 3px solid var(--amber-500);
  padding-left: var(--space-6);
  margin-block: var(--space-8);
}

/* ============================================================
   5. NAVIGATION
   ============================================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--paper-50);
  border-bottom: var(--border-hair);
  /* Slight blur for depth without glow */
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background-color: rgba(250,249,246,0.92);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  padding-inline: var(--space-6);
  max-width: var(--container-max);
  margin-inline: auto;
}

/* Wordmark */
.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-xl);
  color: var(--ink-700);
  letter-spacing: -0.02em;
  text-decoration: none;
}

.nav__logo-mark {
  /* Raven mark — a small stylized ◆ or SVG inline icon */
  display: inline-flex;
  width: 22px;
  height: 22px;
  background-color: var(--ink-900);
  clip-path: polygon(50% 0%, 90% 30%, 75% 100%, 25% 100%, 10% 30%);
  flex-shrink: 0;
}

.nav__links {
  display: none;
  align-items: center;
  gap: var(--space-8);
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--ink-500);
  text-decoration: none;
  transition: color var(--duration-fast);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  right: 0;
  height: 1px;
  background-color: var(--amber-500);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-base) var(--ease-out);
}

.nav__link:hover,
.nav__link[aria-current="page"] {
  color: var(--ink-900);
}

.nav__link:hover::after,
.nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav__cta {
  /* compact button in nav */
  display: none;
  padding: var(--space-2) var(--space-5);
  background-color: var(--ink-900);
  color: var(--paper-50);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: background-color var(--duration-fast);
}

.nav__cta:hover {
  background-color: var(--ink-700);
}

/* Hamburger (mobile) */
.nav__toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
}

.nav__toggle span {
  display: block;
  height: 1.5px;
  background-color: var(--ink-900);
  border-radius: 1px;
  transition: transform var(--duration-base) var(--ease-out), opacity var(--duration-fast);
}

/* Mobile nav drawer */
.nav__mobile {
  display: none;
  position: fixed;
  inset: 60px 0 0 0;
  background-color: var(--paper-50);
  padding: var(--space-8) var(--space-6);
  border-top: var(--border-hair);
  flex-direction: column;
  gap: var(--space-6);
  z-index: 99;
}

.nav__mobile.is-open {
  display: flex;
}

.nav__mobile .nav__link {
  font-size: var(--text-lg);
  color: var(--ink-700);
}

@media (min-width: 768px) {
  .nav__links   { display: flex; }
  .nav__cta     { display: inline-flex; align-items: center; }
  .nav__toggle  { display: none; }
}

/* ============================================================
   6. HERO
   ============================================================ */
.hero {
  padding-block: var(--space-20) var(--space-16);
  border-bottom: var(--border-hair);
  position: relative;
  overflow: hidden;
}

/* Faint paper texture grid — NOT a glow, just a structural suggestion */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--ink-100) 1px, transparent 1px),
    linear-gradient(90deg, var(--ink-100) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.35;
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
}

.hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background-color: var(--amber-100);
  border: 1px solid rgba(200,134,10,0.2);
  border-radius: var(--radius-sm);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--amber-500);
  margin-bottom: var(--space-6);
}

.hero__kicker-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--amber-500);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.8); }
}

.hero__headline {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.025em;
  color: var(--ink-700);
  max-width: 14ch;
  margin-bottom: var(--space-6);
}

.hero__headline em {
  font-style: italic;
  color: var(--amber-500);
}

@media (min-width: 640px) {
  .hero__headline { font-size: var(--text-5xl); }
}

@media (min-width: 960px) {
  .hero__headline { font-size: var(--text-6xl); max-width: 18ch; }
}

.hero__sub {
  font-size: var(--text-lg);
  color: var(--ink-500);
  line-height: var(--leading-relaxed);
  max-width: 52ch;
  margin-bottom: var(--space-10);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4);
}

.hero__proof {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--ink-300);
  border-left: var(--border-hair);
  padding-left: var(--space-4);
}

.hero__proof-icon {
  color: var(--amber-500);
  font-size: var(--text-xs);
}

/* Two-column hero layout (desktop) */
.hero__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: center;
}

@media (min-width: 960px) {
  .hero__layout {
    grid-template-columns: 1fr 1fr;
  }
}

/* Hero terminal/artifact (right side visual) */
.hero__artifact {
  background-color: var(--paper-200);
  border: var(--border-hair);
  border-radius: var(--radius-md);
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  box-shadow: var(--shadow-md);
}

.hero__artifact-bar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background-color: var(--ink-100);
  border-bottom: var(--border-hair);
}

.hero__artifact-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--ink-300);
}

.hero__artifact-dot:first-child { background-color: #e07070; }
.hero__artifact-dot:nth-child(2) { background-color: #d4a840; }
.hero__artifact-dot:nth-child(3) { background-color: #6ab07a; }

.hero__artifact-body {
  padding: var(--space-6);
  line-height: 1.8;
  color: var(--ink-500);
}

.hero__artifact-body .token-key   { color: var(--amber-500); }
.hero__artifact-body .token-val   { color: var(--ink-700); font-weight: 500; }
.hero__artifact-body .token-muted { color: var(--ink-300); }
.hero__artifact-body .token-ok    { color: var(--success); font-weight: 600; }

/* ============================================================
   7. BUTTONS
   ============================================================ */

/* Base */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1;
  text-decoration: none;
  transition:
    background-color var(--duration-fast),
    color            var(--duration-fast),
    border-color     var(--duration-fast),
    box-shadow       var(--duration-base) var(--ease-out),
    transform        var(--duration-fast);
  cursor: pointer;
  border: 2px solid transparent;
  white-space: nowrap;
  -webkit-user-select: none;
  user-select: none;
}

.btn:active {
  transform: translateY(1px);
}

/* Primary — ink black */
.btn--primary {
  background-color: var(--ink-900);
  color: var(--paper-50);
  border-color: var(--ink-900);
}

.btn--primary:hover {
  background-color: var(--ink-700);
  border-color: var(--ink-700);
  box-shadow: var(--shadow-md);
}

/* Accent — amber gold */
.btn--accent {
  background-color: var(--amber-500);
  color: #fff;
  border-color: var(--amber-500);
}

.btn--accent:hover {
  background-color: var(--amber-400);
  border-color: var(--amber-400);
  box-shadow: var(--shadow-md);
}

/* Ghost — outlined */
.btn--ghost {
  background-color: transparent;
  color: var(--ink-700);
  border-color: var(--ink-300);
}

.btn--ghost:hover {
  border-color: var(--ink-700);
  background-color: var(--paper-100);
}

/* Text link style */
.btn--link {
  background: none;
  border: none;
  color: var(--amber-500);
  padding-inline: 0;
  font-weight: 500;
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 3px;
  transition: text-decoration-color var(--duration-fast), color var(--duration-fast);
}

.btn--link:hover {
  color: var(--amber-400);
  text-decoration-color: currentColor;
}

/* Sizes */
.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

/* Arrow icon helper (CSS only) */
.btn__arrow {
  display: inline-block;
  transition: transform var(--duration-base) var(--ease-out);
}

.btn:hover .btn__arrow {
  transform: translateX(4px);
}

/* ============================================================
   8. CARDS
   ============================================================ */
.card {
  background-color: var(--paper-100);
  border: var(--border-hair);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  transition: box-shadow var(--duration-base) var(--ease-out), border-color var(--duration-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--ink-300);
}

.card--flat {
  box-shadow: none;
  border: var(--border-hair);
}

.card--ink {
  background-color: var(--ink-700);
  color: var(--paper-50);
  border-color: transparent;
}

.card--ink h2, .card--ink h3, .card--ink h4 {
  color: var(--paper-50);
}

.card--ink .text-muted {
  color: var(--ink-300);
}

.card--amber {
  background-color: var(--amber-100);
  border-color: rgba(200,134,10,0.15);
}

/* Card parts */
.card__eyebrow {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--amber-500);
  margin-bottom: var(--space-3);
}

.card__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  line-height: var(--leading-snug);
  color: var(--ink-700);
  margin-bottom: var(--space-3);
}

.card--ink .card__title {
  color: var(--paper-50);
}

.card__body {
  font-size: var(--text-sm);
  color: var(--ink-500);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-6);
}

.card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xs);
  color: var(--ink-300);
  margin-top: auto;
}

.card__tag {
  display: inline-block;
  padding: var(--space-1) var(--space-2);
  background-color: var(--amber-100);
  border: 1px solid rgba(200,134,10,0.2);
  border-radius: 2px;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--amber-500);
}

.card--ink .card__tag {
  background-color: rgba(200,134,10,0.15);
  border-color: rgba(200,134,10,0.3);
}

/* Service card (icon + title + description) */
.service-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-8);
  background-color: var(--paper-100);
  border: var(--border-hair);
  border-radius: var(--radius-md);
  transition: box-shadow var(--duration-base) var(--ease-out), transform var(--duration-base) var(--ease-out);
}

.service-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.service-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background-color: var(--ink-900);
  border-radius: var(--radius-sm);
  color: var(--paper-50);
  font-size: var(--text-lg);
  flex-shrink: 0;
}

.service-card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--ink-700);
}

.service-card__desc {
  font-size: var(--text-sm);
  color: var(--ink-500);
  line-height: var(--leading-relaxed);
  flex: 1;
}

.service-card__price {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--amber-500);
  padding-top: var(--space-4);
  border-top: var(--border-hair);
}

/* ============================================================
   9. CASE STUDY BLOCKS
   ============================================================ */
.case-study {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  padding: var(--space-10);
  background-color: var(--paper-100);
  border: var(--border-hair);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--amber-500);
}

@media (min-width: 768px) {
  .case-study {
    grid-template-columns: 1fr 2fr;
  }
}

.case-study__meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.case-study__client {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--ink-300);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.case-study__name {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--ink-700);
  line-height: var(--leading-snug);
}

.case-study__tag {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background-color: var(--amber-100);
  border: 1px solid rgba(200,134,10,0.2);
  border-radius: 2px;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--amber-500);
  width: fit-content;
}

.case-study__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

/* Three-step problem/solution/result layout */
.case-study__steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .case-study__steps {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

.case-study__step {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.case-study__step-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-300);
}

.case-study__step-title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--ink-700);
}

.case-study__step-body {
  font-size: var(--text-sm);
  color: var(--ink-500);
  line-height: var(--leading-relaxed);
}

/* Result highlight */
.case-study__result {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background-color: var(--ink-900);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--paper-50);
}

.case-study__result-icon {
  color: var(--amber-500);
}

/* ============================================================
   10. STAT / PROOF BLOCKS
   ============================================================ */
.stat-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  padding-block: var(--space-12);
  border-top: var(--border-hair);
  border-bottom: var(--border-hair);
}

@media (min-width: 768px) {
  .stat-row {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.stat-item__value {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 800;
  line-height: 1;
  color: var(--ink-700);
  letter-spacing: -0.02em;
}

.stat-item__label {
  font-size: var(--text-sm);
  color: var(--ink-500);
  line-height: var(--leading-normal);
}

/* ============================================================
   11. BLOG / EDITORIAL
   ============================================================ */
.post-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-1);
}

/* Row-style post list */
.post-row {
  display: flex;
  align-items: baseline;
  gap: var(--space-6);
  padding-block: var(--space-5);
  border-bottom: var(--border-hair);
  text-decoration: none;
  color: var(--ink-700);
  transition: color var(--duration-fast);
}

.post-row:first-child {
  border-top: var(--border-hair);
}

.post-row:hover {
  color: var(--amber-500);
}

.post-row__date {
  font-size: var(--text-xs);
  color: var(--ink-300);
  white-space: nowrap;
  min-width: 80px;
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}

.post-row__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  line-height: var(--leading-tight);
  flex: 1;
}

.post-row__tag {
  font-size: var(--text-xs);
  color: var(--ink-300);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
  flex-shrink: 0;
}

/* Article / prose content area */
.prose {
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--ink-700);
  max-width: var(--container-text);
}

.prose h1 {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-4);
  margin-top: var(--space-12);
}

.prose h1:first-child { margin-top: 0; }

.prose h2 {
  font-size: var(--text-2xl);
  margin-top: var(--space-10);
  margin-bottom: var(--space-4);
  padding-top: var(--space-8);
  border-top: var(--border-hair);
}

.prose h3 {
  font-size: var(--text-xl);
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
}

.prose p + p { margin-top: var(--space-5); }

.prose ul, .prose ol {
  padding-left: var(--space-6);
  margin-block: var(--space-5);
}

.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }

.prose li {
  margin-bottom: var(--space-2);
  line-height: var(--leading-relaxed);
}

.prose a {
  color: var(--amber-500);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(200,134,10,0.4);
  transition: text-decoration-color var(--duration-fast), color var(--duration-fast);
}

.prose a:hover {
  color: var(--amber-400);
  text-decoration-color: currentColor;
}

.prose strong { font-weight: 600; color: var(--ink-900); }
.prose em     { font-style: italic; }

.prose pre {
  background-color: var(--paper-200);
  border: var(--border-hair);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  overflow-x: auto;
  margin-block: var(--space-6);
  font-size: var(--text-sm);
  line-height: 1.7;
}

.prose code {
  background-color: var(--paper-200);
  border: 1px solid var(--ink-100);
  border-radius: var(--radius-sm);
  padding: 0.1em 0.35em;
  font-size: 0.875em;
}

.prose pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: inherit;
}

.prose blockquote {
  border-left: 3px solid var(--amber-500);
  padding-left: var(--space-6);
  margin-left: 0;
  margin-block: var(--space-6);
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-lg);
  color: var(--ink-700);
}

/* Post meta header */
.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--ink-300);
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-6);
  border-bottom: var(--border-hair);
}

.post-meta__sep {
  color: var(--ink-100);
}

/* ============================================================
   12. FORMS
   ============================================================ */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--ink-700);
}

.form-label .required {
  color: var(--error);
  margin-left: 2px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background-color: var(--paper-50);
  border: 1.5px solid var(--ink-100);
  border-radius: var(--radius-sm);
  font-size: var(--text-base);
  color: var(--ink-900);
  line-height: var(--leading-normal);
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
  -webkit-appearance: none;
  appearance: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--ink-300);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--amber-500);
  box-shadow: 0 0 0 3px rgba(200,134,10,0.12);
}

.form-input.is-error,
.form-textarea.is-error {
  border-color: var(--error);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-hint {
  font-size: var(--text-xs);
  color: var(--ink-300);
}

.form-error-msg {
  font-size: var(--text-xs);
  color: var(--error);
}

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none'%3E%3Cpath d='M4 6l4 4 4-4' stroke='%235a5748' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: var(--space-10);
  cursor: pointer;
}

/* Contact form layout */
.contact-form {
  background-color: var(--paper-100);
  border: var(--border-hair);
  border-radius: var(--radius-md);
  padding: var(--space-10);
  max-width: 560px;
}

.contact-form__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--ink-700);
  margin-bottom: var(--space-2);
}

.contact-form__sub {
  font-size: var(--text-sm);
  color: var(--ink-500);
  margin-bottom: var(--space-8);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

@media (min-width: 480px) {
  .form-row--2 { grid-template-columns: 1fr 1fr; }
}

/* ============================================================
   13. SECTION HEADERS
   ============================================================ */
.section-header {
  margin-bottom: var(--space-12);
}

.section-header--center {
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: var(--space-12);
}

.section-header__eyebrow {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber-500);
  margin-bottom: var(--space-3);
}

.section-header__title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: var(--leading-snug);
  letter-spacing: -0.015em;
  color: var(--ink-700);
  margin-bottom: var(--space-4);
}

@media (min-width: 640px) {
  .section-header__title { font-size: var(--text-4xl); }
}

.section-header__body {
  font-size: var(--text-lg);
  color: var(--ink-500);
  line-height: var(--leading-relaxed);
  max-width: 56ch;
}

.section-header--center .section-header__body {
  margin-inline: auto;
}

/* ============================================================
   14. TESTIMONIALS / SOCIAL PROOF
   ============================================================ */
.testimonial {
  padding: var(--space-8);
  background-color: var(--paper-100);
  border: var(--border-hair);
  border-radius: var(--radius-md);
  position: relative;
}

.testimonial::before {
  content: '\201C';  /* opening curly quote */
  position: absolute;
  top: var(--space-4);
  right: var(--space-6);
  font-family: var(--font-display);
  font-size: 80px;
  line-height: 1;
  color: var(--ink-100);
  pointer-events: none;
}

.testimonial__body {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-lg);
  line-height: var(--leading-snug);
  color: var(--ink-700);
  margin-bottom: var(--space-6);
  position: relative;
  z-index: 1;
}

.testimonial__author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.testimonial__avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--ink-100);
  overflow: hidden;
  flex-shrink: 0;
}

.testimonial__name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--ink-700);
}

.testimonial__role {
  font-size: var(--text-xs);
  color: var(--ink-300);
}

/* ============================================================
   15. BANNER / ANNOUNCEMENT BAR
   ============================================================ */
.announcement {
  background-color: var(--ink-900);
  color: var(--paper-50);
  text-align: center;
  padding: var(--space-2) var(--space-6);
  font-size: var(--text-sm);
}

.announcement a {
  color: var(--amber-400);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ============================================================
   16. CALLOUT / INFO BOXES
   ============================================================ */
.callout {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
}

.callout--info {
  background-color: var(--amber-100);
  border-color: rgba(200,134,10,0.2);
  color: var(--ink-700);
}

.callout--warn {
  background-color: #fef3c7;
  border-color: #f59e0b40;
  color: #92400e;
}

.callout--success {
  background-color: #ecfdf5;
  border-color: #059669;
  color: #065f46;
}

.callout--error {
  background-color: #fef2f2;
  border-color: #dc2626;
  color: #7f1d1d;
}

.callout__icon {
  font-size: var(--text-lg);
  flex-shrink: 0;
  margin-top: 1px;
}

.callout__body {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

/* ============================================================
   17. PRICING / TIERS
   ============================================================ */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .pricing-grid { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 960px) {
  .pricing-grid { grid-template-columns: repeat(3, 1fr); }
}

.pricing-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-8);
  background-color: var(--paper-100);
  border: var(--border-hair);
  border-radius: var(--radius-md);
  position: relative;
}

.pricing-card--featured {
  background-color: var(--ink-700);
  border-color: transparent;
  color: var(--paper-50);
}

.pricing-card--featured h3 {
  color: var(--paper-50);
}

.pricing-card__badge {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--amber-500);
  color: #fff;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: var(--space-1) var(--space-3);
  border-radius: 2px;
  white-space: nowrap;
}

.pricing-card__name {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber-500);
  margin-bottom: var(--space-3);
}

.pricing-card--featured .pricing-card__name {
  color: var(--amber-400);
}

.pricing-card__price {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink-700);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.pricing-card--featured .pricing-card__price {
  color: var(--paper-50);
}

.pricing-card__freq {
  font-size: var(--text-sm);
  color: var(--ink-300);
  margin-bottom: var(--space-6);
}

.pricing-card__divider {
  border: none;
  border-top: var(--border-hair);
  margin-bottom: var(--space-6);
}

.pricing-card--featured .pricing-card__divider {
  border-color: rgba(255,255,255,0.12);
}

.pricing-card__features {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
  margin-bottom: var(--space-8);
}

.pricing-card__feature {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--ink-500);
  line-height: var(--leading-normal);
}

.pricing-card--featured .pricing-card__feature {
  color: rgba(250,249,246,0.75);
}

.pricing-card__feature-icon {
  color: var(--amber-500);
  flex-shrink: 0;
  margin-top: 2px;
  font-size: var(--text-base);
  line-height: 1;
}

/* ============================================================
   18. FOOTER
   ============================================================ */
.footer {
  background-color: var(--ink-900);
  color: var(--paper-50);
  padding-top: var(--space-16);
  padding-bottom: var(--space-8);
  border-top: 3px solid var(--amber-500);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

@media (min-width: 640px) {
  .footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 960px) {
  .footer__grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-xl);
  color: var(--paper-50);
  letter-spacing: -0.02em;
  text-decoration: none;
}

.footer__tagline {
  font-size: var(--text-sm);
  color: var(--ink-300);
  line-height: var(--leading-relaxed);
  max-width: 30ch;
}

.footer__social {
  display: flex;
  gap: var(--space-4);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-sm);
  color: var(--ink-300);
  font-size: var(--text-sm);
  transition: border-color var(--duration-fast), color var(--duration-fast);
  text-decoration: none;
}

.footer__social-link:hover {
  border-color: var(--amber-500);
  color: var(--amber-400);
}

.footer__col-title {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-300);
  margin-bottom: var(--space-5);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__link {
  font-size: var(--text-sm);
  color: rgba(250,249,246,0.65);
  text-decoration: none;
  transition: color var(--duration-fast);
}

.footer__link:hover {
  color: var(--paper-50);
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: var(--text-xs);
  color: var(--ink-300);
}

.footer__bottom-links {
  display: flex;
  gap: var(--space-6);
}

.footer__bottom-link {
  color: var(--ink-300);
  text-decoration: none;
  transition: color var(--duration-fast);
}

.footer__bottom-link:hover {
  color: var(--paper-50);
}

.footer__self-note {
  font-style: italic;
  color: var(--amber-500);
  opacity: 0.7;
}

/* ============================================================
   19. UTILITY CLASSES
   ============================================================ */

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

/* Display */
.hidden   { display: none !important; }
.flex     { display: flex; }
.inline-flex { display: inline-flex; }
.grid     { display: grid; }
.block    { display: block; }
.inline   { display: inline; }

/* Flex utils */
.items-center  { align-items: center; }
.items-start   { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.justify-center  { justify-content: center; }
.flex-wrap   { flex-wrap: wrap; }
.gap-2  { gap: var(--space-2); }
.gap-3  { gap: var(--space-3); }
.gap-4  { gap: var(--space-4); }
.gap-6  { gap: var(--space-6); }
.gap-8  { gap: var(--space-8); }

/* Spacing */
.mt-0   { margin-top: 0; }
.mt-4   { margin-top: var(--space-4); }
.mt-6   { margin-top: var(--space-6); }
.mt-8   { margin-top: var(--space-8); }
.mt-12  { margin-top: var(--space-12); }
.mb-4   { margin-bottom: var(--space-4); }
.mb-6   { margin-bottom: var(--space-6); }
.mb-8   { margin-bottom: var(--space-8); }
.mb-12  { margin-bottom: var(--space-12); }

/* Text alignment */
.text-left   { text-align: left; }
.text-center { text-align: center; }
.text-right  { text-align: right; }

/* Width */
.w-full { width: 100%; }

/* Overflow */
.overflow-hidden { overflow: hidden; }

/* Background */
.bg-paper    { background-color: var(--paper-50); }
.bg-paper-2  { background-color: var(--paper-100); }
.bg-paper-3  { background-color: var(--paper-200); }
.bg-ink      { background-color: var(--ink-900); }
.bg-amber    { background-color: var(--amber-100); }

/* ============================================================
   20. ANIMATIONS
   ============================================================ */

/* Fade up on page load (CSS animation ends VISIBLE — never leaves content
   hidden for crawlers, social previews, no-JS, or first paint). The old
   scroll-gated opacity:0 left below-fold sections blank. Fixed 2026-06-08. */
.animate-in {
  opacity: 0;
  transform: translateY(20px);
  animation: crowork-rise var(--duration-slow) var(--ease-out) forwards;
}

.animate-in.is-visible { opacity: 1; transform: translateY(0); }

@keyframes crowork-rise {
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .animate-in { opacity: 1; transform: none; animation: none; }
}

/* Stagger delays */
.delay-1 { transition-delay: 80ms; }
.delay-2 { transition-delay: 160ms; }
.delay-3 { transition-delay: 240ms; }
.delay-4 { transition-delay: 320ms; }

/* ============================================================
   21. MOBILE OVERRIDES
   ============================================================ */
@media (max-width: 639px) {
  .section  { padding-block: var(--space-12); }
  .section--lg { padding-block: var(--space-20); }
  .container { padding-inline: var(--space-4); }
  .case-study { padding: var(--space-6); }
  .contact-form { padding: var(--space-6); }
  .card   { padding: var(--space-6); }
  .service-card { padding: var(--space-6); }
}

/* ============================================================
   22. PRINT
   ============================================================ */
@media print {
  .nav, .footer, .announcement { display: none; }
  body { background: #fff; color: #000; }
  .prose { max-width: 100%; }
  a[href]::after { content: ' (' attr(href) ')'; font-size: 0.75em; }
}