/* ============================================================
   GOTOWOSCOBIEKTU.PL — styles.css
   Aesthetic: Industrial Precision — monochrome, grid-driven,
   typographically led. No ornament without function.
   ============================================================ */

/* ---- CSS VARIABLES ---- */
:root {
  --c-black: #0d0d0d;
  --c-near-black: #111111;
  --c-grey-900: #1a1a1a;
  --c-grey-700: #3d3d3d;
  --c-grey-500: #6b6b6b;
  --c-grey-400: #888888;
  --c-grey-200: #d4d4d4;
  --c-grey-100: #ebebeb;
  --c-grey-50: #f5f5f5;
  --c-white: #ffffff;
  --c-accent: #0d0d0d;
  --c-accent-subtle: #1a1a1a;

  --font-display: 'Inter', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  --space-2xl: 10rem;

  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);

  --container-max: 1200px;
  --container-pad: clamp(1.25rem, 4vw, 3rem);
}

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

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--c-black);
  background: var(--c-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

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

ul,
ol {
  list-style: none;
}

address {
  font-style: normal;
}

button {
  cursor: pointer;
  border: none;
  background: transparent;
  font-family: inherit;
}

/* ---- TYPOGRAPHY HELPERS ---- */
.mono {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}

/* ---- LAYOUT ---- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
}

.section {
  padding-top: clamp(4rem, 9vw, 7rem);
  padding-bottom: clamp(4rem, 9vw, 7rem);
}

/* ---- SECTION LABELS ---- */
.section-label,
.cta-label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--c-grey-500);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.7rem;
  margin-bottom: 1.5rem;
}

.label-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-black);
  flex-shrink: 0;
}

/* ---- SECTION TITLES ---- */
.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.015em;
  color: var(--c-black);
  margin-bottom: 3rem;
  text-rendering: optimizeLegibility;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-grey-100);
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: 0 2px 24px rgba(0, 0, 0, 0.07);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-mark {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-white);
  background: var(--c-black);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  letter-spacing: -0.01em;
  flex-shrink: 0;
  text-rendering: geometricPrecision;
}

.logo-text {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--c-grey-500);
  letter-spacing: 0.04em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--c-grey-700);
  transition: color var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--c-black);
  transition: width var(--transition);
}

.nav-links a:hover {
  color: var(--c-black);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  background: var(--c-black) !important;
  color: var(--c-white) !important;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 500 !important;
  transition: background var(--transition), transform var(--transition) !important;
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  background: var(--c-grey-900) !important;
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  height: 28px;
  justify-content: center;
  align-items: flex-end;
}

.nav-toggle span {
  display: block;
  height: 1.5px;
  background: var(--c-black);
  border-radius: 2px;
  transition: all var(--transition);
}

.nav-toggle span:nth-child(1) {
  width: 100%;
}

.nav-toggle span:nth-child(2) {
  width: 75%;
}

.nav-toggle span:nth-child(3) {
  width: 55%;
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
  width: 100%;
}

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

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
  width: 100%;
}

.nav-mobile {
  display: none;
  background: var(--c-white);
  border-top: 1px solid var(--c-grey-100);
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-mobile.open {
  max-height: 320px;
  display: block;
}

.nav-mobile ul {
  padding: 1rem var(--container-pad) 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.nav-mobile a {
  display: block;
  padding: 0.85rem 0;
  font-size: 1rem;
  font-weight: 500;
  color: var(--c-black);
  border-bottom: 1px solid var(--c-grey-100);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  padding-top: calc(64px + clamp(4rem, 10vw, 7rem));
  padding-bottom: clamp(4rem, 10vw, 7rem);
  overflow: hidden;
  background: var(--c-white);
}

.hero-grid-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(var(--c-grey-100) 1px, transparent 1px),
    linear-gradient(90deg, var(--c-grey-100) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, transparent 0%, rgba(0, 0, 0, 0.06) 30%, rgba(0, 0, 0, 0.06) 70%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, rgba(0, 0, 0, 0.06) 30%, rgba(0, 0, 0, 0.06) 70%, transparent 100%);
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 900px;
}

.hero-label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--c-grey-500);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.7rem;
  margin-bottom: 1.75rem;
  opacity: 0;
  transform: translateY(12px);
  animation: fadeUp 0.6s ease forwards;
  animation-delay: 0.1s;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 6.2vw, 5.1rem);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--c-black);
  margin-bottom: 1.75rem;
  opacity: 0;
  transform: translateY(16px);
  animation: fadeUp 0.7s ease forwards;
  animation-delay: 0.2s;
  text-rendering: optimizeLegibility;
}

.hero-title em {
  font-style: normal;
  color: #5f5f5f;
}

.hero-sub {
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  font-weight: 400;
  color: var(--c-grey-700);
  line-height: 1.6;
  max-width: 540px;
  margin-bottom: 2.5rem;
  opacity: 0;
  transform: translateY(12px);
  animation: fadeUp 0.6s ease forwards;
  animation-delay: 0.35s;
}

.br-desktop {
  display: none;
}

@media (min-width: 640px) {
  .br-desktop {
    display: block;
  }
}

.hero-cta-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
  opacity: 0;
  transform: translateY(12px);
  animation: fadeUp 0.6s ease forwards;
  animation-delay: 0.48s;
}

.hero-meta {
  color: var(--c-grey-400);
  opacity: 0;
  animation: fadeUp 0.6s ease forwards;
  animation-delay: 0.6s;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--c-black);
  color: var(--c-white);
  border: 1.5px solid var(--c-black);
}

.btn-primary:hover {
  background: var(--c-grey-900);
  border-color: var(--c-grey-900);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.18);
}

.btn-secondary {
  background: transparent;
  color: var(--c-black);
  border: 1.5px solid var(--c-grey-200);
}

.btn-secondary:hover {
  border-color: var(--c-black);
  transform: translateY(-2px);
}

.btn-large {
  padding: 1rem 2.5rem;
  font-size: 1rem;
}

/* ============================================================
   PROBLEM
   ============================================================ */
.problem {
  background: var(--c-grey-50);
}

.problem-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  background: var(--c-grey-200);
  border: 1px solid var(--c-grey-200);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 2.5rem;
}

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

@media (min-width: 1024px) {
  .problem-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.problem-item {
  background: var(--c-white);
  padding: 2rem 1.75rem;
  transition: background var(--transition);
}

.problem-item:hover {
  background: var(--c-grey-50);
}

.problem-number {
  font-size: 0.65rem;
  color: var(--c-grey-400);
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}

.problem-item h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-black);
  margin-bottom: 0.75rem;
  line-height: 1.25;
}

.problem-item p {
  font-size: 0.875rem;
  color: var(--c-grey-500);
  line-height: 1.6;
}

.problem-footer {
  font-size: 0.9rem;
  color: var(--c-grey-500);
  font-style: italic;
  border-left: 2px solid var(--c-grey-200);
  padding-left: 1rem;
}

/* ============================================================
   SOLUTION
   ============================================================ */
.solution {
  background: var(--c-white);
}

.solution-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4rem;
  align-items: center;
}

@media (min-width: 900px) {
  .solution-inner {
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
  }
}

.solution-desc {
  font-size: 1rem;
  color: #555555;
  line-height: 1.7;
  margin-bottom: 2rem;
}

.solution-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.solution-list li {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.solution-icon {
  width: 36px;
  height: 36px;
  border: 1px solid var(--c-grey-200);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--c-black);
}

.solution-list li > div {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.solution-list strong {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--c-black);
}

.solution-list span {
  font-size: 0.82rem;
  color: var(--c-grey-500);
}

/* Diagram */
.solution-diagram {
  display: flex;
  justify-content: center;
  align-items: center;
}

.diagram-box {
  position: relative;
  width: 260px;
  height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.diagram-ring {
  width: 180px;
  height: 180px;
  border: 1.5px solid var(--c-grey-200);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  animation: spinSlow 28s linear infinite;
}

.diagram-ring::before {
  content: '';
  position: absolute;
  inset: -10px;
  border: 1px dashed var(--c-grey-100);
  border-radius: 50%;
}

@keyframes spinSlow {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.diagram-center {
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  text-align: center;
  color: var(--c-grey-900);
  line-height: 1.7;
  animation: spinSlow 28s linear infinite reverse;
}

.diagram-labels {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.dl {
  position: absolute;
  font-size: 0.62rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--c-grey-500);
}

.dl-top {
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
}

.dl-right {
  right: 0;
  top: 50%;
  transform: translateY(-50%);
}

.dl-bottom {
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
}

.dl-left {
  left: 0;
  top: 50%;
  transform: translateY(-50%);
}

/* ============================================================
   SERVICES
   ============================================================ */
.services {
  background: var(--c-grey-50);
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5px;
  background: var(--c-grey-200);
  border: 1px solid var(--c-grey-200);
  border-radius: var(--radius-md);
  overflow: hidden;
}

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

.service-card {
  background: var(--c-white);
  padding: 2.5rem 2rem;
  position: relative;
  transition: background var(--transition);
}

.service-card:hover {
  background: #fafafa;
}

.service-card--featured {
  background: var(--c-black);
  color: var(--c-white);
}

.service-card--featured:hover {
  background: var(--c-grey-900);
}

.service-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.service-num {
  font-size: 0.65rem;
  color: var(--c-grey-400);
  letter-spacing: 0.1em;
}

.service-card--featured .service-num {
  color: rgba(255, 255, 255, 0.4);
}

.service-icon {
  color: var(--c-black);
  opacity: 0.7;
}

.service-card--featured .service-icon {
  color: var(--c-white);
  opacity: 0.6;
}

.service-badge {
  display: inline-block;
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 0.25rem 0.6rem;
  border-radius: 100px;
  margin-bottom: 0.75rem;
}

.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.75rem;
  color: var(--c-black);
}

.service-card--featured h3 {
  color: var(--c-white);
}

.service-card p {
  font-size: 0.875rem;
  color: var(--c-grey-500);
  line-height: 1.65;
  margin-bottom: 1.5rem;
}

.service-card--featured p {
  color: rgba(255, 255, 255, 0.6);
}

.service-deliverable {
  border-top: 1px solid var(--c-grey-100);
  padding-top: 1.25rem;
}

.service-card--featured .service-deliverable {
  border-top-color: rgba(255, 255, 255, 0.1);
}

.deliverable-label {
  display: block;
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-grey-400);
  margin-bottom: 0.6rem;
}

.service-card--featured .deliverable-label {
  color: rgba(255, 255, 255, 0.35);
}

.service-deliverable ul {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.service-deliverable li {
  font-size: 0.82rem;
  color: var(--c-grey-700);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.service-deliverable li::before {
  content: '→';
  color: var(--c-grey-400);
  font-size: 0.75rem;
  flex-shrink: 0;
}

.service-card--featured .service-deliverable li {
  color: rgba(255, 255, 255, 0.7);
}

.service-card--featured .service-deliverable li::before {
  color: rgba(255, 255, 255, 0.3);
}

/* ============================================================
   FOR WHOM
   ============================================================ */
.for-whom {
  background: var(--c-white);
}

.for-whom-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

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

@media (min-width: 1024px) {
  .for-whom-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: 1.5rem;
  }
}

.whom-item {
  padding: 1.75rem 1.5rem;
  border: 1px solid var(--c-grey-100);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.whom-item:hover {
  border-color: #bbbbbb;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  transform: translateY(-3px);
}

.whom-icon {
  color: var(--c-black);
  margin-bottom: 1.25rem;
  opacity: 0.75;
}

.whom-item h3 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--c-black);
  margin-bottom: 0.6rem;
}

.whom-item p {
  font-size: 0.82rem;
  color: var(--c-grey-500);
  line-height: 1.6;
}

/* ============================================================
   PROCESS
   ============================================================ */
.process {
  background: var(--c-grey-50);
}

.process-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.process-step {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 1.5rem;
  position: relative;
  padding-bottom: 2.5rem;
}

.process-step:last-child {
  padding-bottom: 0;
}

.step-connector {
  position: absolute;
  left: 22px;
  top: 28px;
  bottom: 0;
  width: 1px;
  background: var(--c-grey-200);
}

.step-num {
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--c-grey-400);
  width: 48px;
  height: 48px;
  border: 1px solid var(--c-grey-200);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-white);
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  transition: border-color var(--transition), color var(--transition);
}

.process-step:hover .step-num {
  border-color: var(--c-black);
  color: var(--c-black);
}

.step-content {
  padding-top: 0.7rem;
}

.step-content h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--c-black);
  margin-bottom: 0.5rem;
}

.step-content p {
  font-size: 0.875rem;
  color: var(--c-grey-500);
  line-height: 1.65;
  margin-bottom: 0.75rem;
}

.step-output {
  font-size: 0.65rem;
  letter-spacing: 0.07em;
  color: var(--c-grey-400);
  text-transform: uppercase;
}

/* ============================================================
   CTA SECTION
   ============================================================ */
.cta-section {
  background: var(--c-white);
  border-top: 1px solid var(--c-grey-100);
}

.cta-inner {
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
}

.cta-label {
  justify-content: center;
}

.cta-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--c-black);
  margin-bottom: 1.5rem;
  text-rendering: optimizeLegibility;
}

.cta-desc {
  font-size: 0.95rem;
  color: var(--c-grey-500);
  line-height: 1.7;
  margin-bottom: 2.5rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.cta-contacts {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.875rem;
  color: var(--c-grey-700);
  transition: color var(--transition);
}

.contact-item:hover {
  color: var(--c-black);
}

.contact-icon {
  color: var(--c-grey-400);
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--c-black);
  color: var(--c-white);
  padding: 3rem 0 2rem;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 3rem;
  }
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-brand .logo-mark {
  background: var(--c-grey-700);
}

.footer-domain {
  font-size: 0.7rem;
  color: var(--c-grey-500);
}

.footer-address p {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.8;
}

.footer-address a {
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition);
}

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

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-nav a {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--transition);
}

.footer-nav a:hover {
  color: var(--c-white);
}

.footer-bottom {
  grid-column: 1 / -1;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 1.5rem;
  color: rgba(255, 255, 255, 0.3);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

[data-animate] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

[data-animate].in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 767px) {
  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-mobile {
    display: block;
  }

  .hero-title {
    letter-spacing: -0.018em;
  }

  .solution-diagram {
    display: none;
  }
}

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

/* ============================================================
   FOCUS / ACCESSIBILITY
   ============================================================ */
:focus-visible {
  outline: 2px solid var(--c-black);
  outline-offset: 3px;
  border-radius: 2px;
}

.site-footer :focus-visible {
  outline-color: var(--c-white);
}

/* ============================================================
   SCROLLBAR (optional, subtle)
   ============================================================ */
@media (min-width: 1024px) {
  ::-webkit-scrollbar {
    width: 6px;
  }

  ::-webkit-scrollbar-track {
    background: var(--c-grey-50);
  }

  ::-webkit-scrollbar-thumb {
    background: var(--c-grey-200);
    border-radius: 3px;
  }

  ::-webkit-scrollbar-thumb:hover {
    background: var(--c-grey-400);
  }
}