/* ============================================================
   Crooked Tree Collaborative — Professional Stylesheet
   Computer Systems Design & Related Services
   ============================================================ */

/* ----- Custom Properties ----- */
:root {
  --color-base:       #1B2A1E;
  --color-darker:     #111B13;
  --color-surface:    #24362A;
  --color-accent:     #E0A458;
  --color-accent-alt: #DA8A4A;
  --color-teal:       #4E7A68;
  --color-light:      #F3F1EA;
  --color-muted:      #9AA88F;
  --color-white:      #FFFFFF;
  --color-border:     rgba(154, 168, 143, 0.25);
  --color-overlay:    rgba(17, 27, 19, 0.70);
  --font-body:        'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono:        'JetBrains Mono', 'Fira Code', monospace;
  --radius-sm:        6px;
  --radius-md:        12px;
  --radius-lg:        20px;
  --radius-xl:        28px;
  --shadow-sm:        0 1px 3px rgba(0,0,0,0.18), 0 1px 2px rgba(0,0,0,0.12);
  --shadow-md:        0 4px 14px rgba(0,0,0,0.22), 0 2px 6px rgba(0,0,0,0.14);
  --shadow-lg:        0 12px 40px rgba(0,0,0,0.30), 0 4px 12px rgba(0,0,0,0.18);
  --shadow-xl:        0 20px 60px rgba(0,0,0,0.40), 0 8px 20px rgba(0,0,0,0.20);
  --shadow-glow:      0 0 40px rgba(224, 164, 88, 0.15);
  --max-width:        1200px;
  --header-height:    76px;
}

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

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

body {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.65;
  color: var(--color-light);
  background-color: var(--color-darker);
  min-height: 100vh;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.25s ease;
}

a:hover {
  color: var(--color-accent-alt);
}

ul {
  list-style: none;
}

address {
  font-style: normal;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-darker);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.35);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
  height: var(--header-height);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-light);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  flex-shrink: 0;
}

.logo:hover {
  color: var(--color-accent);
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  font-size: 14px;
  background-color: var(--color-accent);
  color: var(--color-darker);
  border-radius: var(--radius-md);
  transform: rotate(90deg);
  flex-shrink: 0;
}

.logo-text {
  white-space: nowrap;
}

/* Main Nav */
.main-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-list a,
.nav-link {
  display: inline-block;
  padding: 10px 18px;
  font-size: 0.938rem;
  font-weight: 500;
  color: var(--color-muted);
  border-radius: var(--radius-sm);
  transition: color 0.25s ease, background-color 0.25s ease;
}

.nav-list a:hover,
.nav-link:hover {
  color: var(--color-light);
  background-color: var(--color-surface);
}

/* Hamburger Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background-color 0.25s ease;
}

.nav-toggle:hover {
  background-color: var(--color-surface);
}

.toggle-bar {
  display: block;
  width: 24px;
  height: 2.5px;
  background-color: var(--color-light);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Mobile menu active state */
.nav-toggle.active .toggle-bar:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}

.nav-toggle.active .toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active .toggle-bar:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* ============================================================
   BUTTONS
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-family: var(--font-body);
  font-size: 0.938rem;
  font-weight: 600;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.3s ease;
  letter-spacing: 0.01em;
  white-space: nowrap;
  line-height: 1.3;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-darker);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: var(--color-accent-alt);
  border-color: var(--color-accent-alt);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
  color: var(--color-darker);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-light);
  border-color: var(--color-muted);
}

.btn-secondary:hover {
  background-color: var(--color-surface);
  border-color: var(--color-light);
  color: var(--color-white);
  transform: translateY(-1px);
}

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

.hero {
  padding: 100px 32px 120px;
  background: radial-gradient(ellipse 70% 50% at 50% 0%, var(--color-surface) 0%, var(--color-darker) 70%);
  overflow: hidden;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  max-width: var(--max-width);
  margin: 0 auto;
  align-items: center;
}

.hero-content {
  max-width: 600px;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 20px;
  padding: 6px 14px;
  border: 1px solid rgba(224, 164, 88, 0.30);
  border-radius: 99px;
  background-color: rgba(224, 164, 88, 0.08);
}

.hero-heading {
  font-size: 3.2rem;
  font-weight: 700;
  line-height: 1.15;
  color: var(--color-light);
  margin-bottom: 24px;
  letter-spacing: -0.025em;
}

.hero-sub {
  font-size: 1.125rem;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* Hero Visual — abstract nodes & edges */
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 420px;
}

.hero-abstract {
  position: relative;
  width: 400px;
  height: 400px;
}

.node {
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: var(--color-accent);
  box-shadow: 0 0 18px rgba(224, 164, 88, 0.50), 0 0 6px rgba(224, 164, 88, 0.30);
}

.node-a { top: 8%;   left: 50%; }
.node-b { top: 22%;  left: 78%; }
.node-c { top: 55%;  left: 82%; }
.node-d { top: 72%;  left: 42%; }
.node-e { top: 38%;  left: 14%; }

.edge {
  position: absolute;
  height: 2px;
  background: linear-gradient(90deg, rgba(224,164,88,0.60), rgba(78,122,104,0.30));
  transform-origin: left center;
  border-radius: 1px;
}

.edge-1 { top: 11%;  left: 53%;  width: 110px; transform: rotate(28deg); }
.edge-2 { top: 28%;  left: 78%;  width: 90px;  transform: rotate(82deg); }
.edge-3 { top: 48%;  left: 58%;  width: 130px; transform: rotate(-42deg); }
.edge-4 { top: 62%;  left: 46%;  width: 100px; transform: rotate(-15deg); }
.edge-5 { top: 35%;  left: 18%;  width: 100px; transform: rotate(48deg); }

/* ============================================================
   SECTION SHARED
   ============================================================ */

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 64px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-light);
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

.section-lead {
  font-size: 1.1rem;
  color: var(--color-muted);
  line-height: 1.65;
}

.section-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

/* ============================================================
   SERVICES
   ============================================================ */

.services {
  padding: 100px 32px 120px;
  background-color: var(--color-base);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px 32px 36px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border-color: rgba(224, 164, 88, 0.30);
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  font-size: 22px;
  color: var(--color-accent);
  background-color: rgba(224, 164, 88, 0.10);
  border-radius: var(--radius-md);
  margin-bottom: 22px;
}

.card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-light);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.card-desc {
  font-size: 0.95rem;
  color: var(--color-muted);
  line-height: 1.65;
}

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

.about {
  padding: 100px 32px 120px;
  background-color: var(--color-darker);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  max-width: var(--max-width);
  margin: 0 auto;
  align-items: center;
}

.about-content .section-eyebrow {
  margin-bottom: 16px;
}

.about-content .section-title {
  margin-bottom: 20px;
}

.about-text {
  font-size: 1rem;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 18px;
}

.about-meta {
  display: flex;
  gap: 40px;
  margin-top: 32px;
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.meta-value {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-light);
}

.meta-label {
  font-size: 0.85rem;
  color: var(--color-muted);
}

/* About Visual — geo rings */
.about-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-geo {
  position: relative;
  width: 300px;
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.geo-core {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background-color: var(--color-accent);
  box-shadow: 0 0 30px rgba(224, 164, 88, 0.60), 0 0 10px rgba(224, 164, 88, 0.30);
  z-index: 2;
}

.geo-ring {
  position: absolute;
  border-radius: 50%;
  border: 2px solid;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.ring-1 {
  width: 100px;
  height: 100px;
  border-color: var(--color-accent);
  opacity: 0.70;
}

.ring-2 {
  width: 180px;
  height: 180px;
  border-color: var(--color-teal);
  opacity: 0.45;
}

.ring-3 {
  width: 260px;
  height: 260px;
  border-color: var(--color-muted);
  opacity: 0.25;
}

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

.process {
  padding: 100px 32px 120px;
  background-color: var(--color-base);
}

.process-steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  max-width: var(--max-width);
  margin: 0 auto;
}

.step {
  flex: 1;
  text-align: center;
  padding: 0 20px;
}

.step-marker {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background-color: var(--color-accent);
  color: var(--color-darker);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 18px;
  box-shadow: 0 0 20px rgba(224, 164, 88, 0.25);
}

.step-connector {
  width: 40px;
  height: 2px;
  background-color: var(--color-muted);
  margin-top: 28px;
  flex-shrink: 0;
  opacity: 0.40;
  border-radius: 1px;
}

.step-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-light);
  margin-bottom: 10px;
}

.step-desc {
  font-size: 0.925rem;
  color: var(--color-muted);
  line-height: 1.6;
}

/* ============================================================
   INDUSTRIES
   ============================================================ */

.industries {
  padding: 100px 32px 120px;
  background-color: var(--color-darker);
}

.industry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.industry-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 30px 32px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.industry-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(78, 122, 104, 0.40);
}

.industry-symbol {
  display: inline-block;
  font-size: 20px;
  color: var(--color-teal);
  margin-bottom: 18px;
}

.industry-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-light);
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.industry-desc {
  font-size: 0.925rem;
  color: var(--color-muted);
  line-height: 1.6;
}

/* ============================================================
   STATS
   ============================================================ */

.stats {
  padding: 64px 32px;
  background-color: var(--color-darker);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.stat {
  text-align: center;
  padding: 20px;
}

.stat-number {
  display: block;
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.stat-unit {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-accent);
}

.stat-label {
  display: block;
  font-size: 0.9rem;
  color: var(--color-muted);
  margin-top: 8px;
  font-weight: 500;
}

/* ============================================================
   TESTIMONIALS
   ============================================================ */

.testimonials {
  padding: 100px 32px 120px;
  background-color: var(--color-base);
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.testimonial {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 30px 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.testimonial:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.testimonial-text {
  font-size: 0.975rem;
  color: var(--color-light);
  line-height: 1.7;
  margin-bottom: 24px;
  font-style: italic;
  position: relative;
}

.testimonial-text::before {
  content: '\201C';
  display: inline;
  font-size: 2.5rem;
  line-height: 0;
  color: var(--color-accent);
  vertical-align: -0.15em;
  margin-right: 4px;
  font-style: normal;
}

.testimonial-author {
  border-top: 1px solid var(--color-border);
  padding-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-style: normal;
}

.testimonial-author strong {
  font-size: 0.95rem;
  color: var(--color-light);
  font-weight: 700;
}

.testimonial-author span {
  font-size: 0.85rem;
  color: var(--color-muted);
}

/* ============================================================
   CONTACT
   ============================================================ */

.contact {
  padding: 100px 32px 120px;
  background-color: var(--color-darker);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.contact-info .section-eyebrow {
  margin-bottom: 16px;
}

.contact-info .section-title {
  margin-bottom: 18px;
}

.contact-text {
  font-size: 1rem;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 32px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.contact-label {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.contact-value {
  font-size: 1rem;
  color: var(--color-light);
  font-weight: 500;
  transition: color 0.25s ease;
}

a.contact-value:hover {
  color: var(--color-accent);
}

/* Contact Form */
.contact-form {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-light);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 14px 18px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-light);
  background-color: var(--color-base);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  outline: none;
  line-height: 1.5;
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(224, 164, 88, 0.15);
}

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

.form-submit {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-family: var(--font-body);
  font-size: 0.938rem;
  font-weight: 600;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.3s ease;
  letter-spacing: 0.01em;
  white-space: nowrap;
  line-height: 1.3;
  background-color: var(--color-accent);
  color: var(--color-darker);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.form-submit:hover {
  background-color: var(--color-accent-alt);
  border-color: var(--color-accent-alt);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

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

.site-footer {
  padding: 72px 32px 28px;
  background-color: var(--color-darker);
  border-top: 1px solid var(--color-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 42px;
  max-width: var(--max-width);
  margin: 0 auto 48px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul a {
  font-size: 0.925rem;
  color: var(--color-muted);
  transition: color 0.25s ease;
}

.footer-col ul a:hover {
  color: var(--color-accent);
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-tagline {
  font-size: 0.925rem;
  color: var(--color-muted);
  line-height: 1.6;
  max-width: 340px;
}

.footer-address {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-address p,
.footer-address a {
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.6;
}

.footer-address a {
  transition: color 0.25s ease;
}

.footer-address a:hover {
  color: var(--color-accent);
}

.footer-heading {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-light);
  text-transform: uppercase;
  letter-spacing: 0.10em;
  margin-bottom: 18px;
}

.footer-legal a,
.footer-nav a,
.footer-contact a {
  font-size: 0.925rem;
  color: var(--color-muted);
  transition: color 0.25s ease;
}

.footer-legal a:hover,
.footer-nav a:hover,
.footer-contact a:hover {
  color: var(--color-accent);
}

.footer-legal a[href*="/privacy"],
.footer-legal a[href*="/terms-of-service"] {
  font-size: 0.925rem;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  font-size: 0.825rem;
  color: var(--color-muted);
}

.footer-bottom a {
  color: var(--color-muted);
  transition: color 0.25s ease;
}

.footer-bottom a:hover {
  color: var(--color-accent);
}

/* ============================================================
   RESPONSIVE BREAKPOINTS
   ============================================================ */

/* ~880px — mobile hamburger nav, grid collapse */
@media (max-width: 880px) {

  /* Mobile nav */
  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-darker);
    transform: translateX(100%);
    transition: transform 0.35s ease;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    padding: 40px 32px;
    z-index: 999;
    overflow-y: auto;
  }

  .main-nav.active {
    transform: translateX(0);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .nav-list a,
  .nav-link {
    padding: 16px 18px;
    font-size: 1.1rem;
    border-radius: var(--radius-md);
  }

  .nav-toggle {
    display: flex;
    z-index: 1001;
  }

  /* Hero */
  .hero {
    padding: 64px 24px 80px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-heading {
    font-size: 2.3rem;
  }

  .hero-visual {
    min-height: auto;
  }

  .hero-abstract {
    width: 280px;
    height: 280px;
  }

  /* Section titles */
  .section-title {
    font-size: 1.9rem;
  }

  /* Card grid — 2 columns */
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* About */
  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about-visual {
    order: -1;
  }

  .about-geo {
    width: 240px;
    height: 240px;
  }

  .ring-1 { width: 80px;  height: 80px; }
  .ring-2 { width: 144px; height: 144px; }
  .ring-3 { width: 208px; height: 208px; }

  .about-meta {
    flex-direction: column;
    gap: 24px;
  }

  /* Process — stack vertically */
  .process-steps {
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }

  .step-connector {
    width: 2px;
    height: 36px;
    margin-top: 0;
  }

  /* Industry grid — 2 columns */
  .industry-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Stats — 2 columns */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat-number {
    font-size: 2.4rem;
  }

  /* Testimonials — 2 columns */
  .testimonial-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Contact */
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 36px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* ~600px — single column layouts */
@media (max-width: 600px) {
  .header-inner {
    padding: 0 20px;
  }

  .hero {
    padding: 48px 20px 64px;
  }

  .hero-heading {
    font-size: 1.85rem;
  }

  .hero-sub {
    font-size: 1rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
    text-align: center;
  }

  .hero-abstract {
    width: 220px;
    height: 220px;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .services,
  .about,
  .process,
  .industries,
  .testimonials,
  .contact {
    padding: 64px 20px 80px;
  }

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

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

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

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

  .contact-form {
    padding: 28px 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    font-size: 0.8rem;
  }
}

/* ============================================================
   ANIMATIONS (subtle)
   ============================================================ */

@keyframes pulse-ring {
  0%, 100% { opacity: 0.70; }
  50%      { opacity: 0.35; }
}

.ring-1 { animation: pulse-ring 3.5s ease-in-out infinite; }
.ring-2 { animation: pulse-ring 4.5s ease-in-out infinite 0.6s; }
.ring-3 { animation: pulse-ring 5.5s ease-in-out infinite 1.2s; }

@keyframes float-node {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-6px); }
}

.node-a { animation: float-node 4s ease-in-out infinite; }
.node-b { animation: float-node 5s ease-in-out infinite 0.5s; }
.node-c { animation: float-node 4.5s ease-in-out infinite 1s; }
.node-d { animation: float-node 5.5s ease-in-out infinite 1.5s; }
.node-e { animation: float-node 3.8s ease-in-out infinite 0.8s; }

/* ============================================================
   UTILITY
   ============================================================ */

::selection {
  background-color: rgba(224, 164, 88, 0.28);
  color: var(--color-light);
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}