/* ==========================================================================
   Layout - InLinea Agencja Interaktywna
   Header, hero, services, portfolio, about, contact, footer
   ========================================================================== */

/* ==========================================================================
   1. SITE HEADER - transparent on hero, white on scroll
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  background-color: transparent;
  transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

.site-header--scrolled {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 var(--color-border-light);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-5) var(--space-4);
}

.site-header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  font-family: var(--font-family-heading);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  letter-spacing: var(--letter-spacing-tight);
  flex-shrink: 0;
}

.site-header--scrolled .site-header__logo {
  color: var(--color-dark-900);
}

.site-header__logo-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  background-color: var(--color-accent-500);
  border-radius: 50%;
  margin-left: 2px;
}

/* ==========================================================================
   2. PRIMARY NAVIGATION
   ========================================================================== */

.nav-primary {
  display: none;
  flex: 1;
  justify-content: center;
}

.nav-primary__list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-primary__link {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: color var(--transition-base);
}

.nav-primary__link:hover {
  color: var(--color-white);
}

.site-header--scrolled .nav-primary__link {
  color: var(--color-text-secondary);
}

.site-header--scrolled .nav-primary__link:hover {
  color: var(--color-text-primary);
}

.site-header__cta-wrap {
  display: none;
}

/* ==========================================================================
   3. MOBILE NAVIGATION
   ========================================================================== */

.menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: var(--space-2);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-base);
}

.site-header--scrolled .menu-toggle {
  background: var(--color-gray-100);
  border-color: var(--color-border);
}

.menu-toggle__icon {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-white);
  position: relative;
  transition: background-color var(--transition-fast);
}

.site-header--scrolled .menu-toggle__icon,
.site-header--scrolled .menu-toggle__icon::before,
.site-header--scrolled .menu-toggle__icon::after {
  background-color: var(--color-dark-900);
}

.menu-toggle__icon::before,
.menu-toggle__icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background-color: var(--color-white);
  transition: transform var(--transition-base);
}

.menu-toggle__icon::before { top: -6px; }
.menu-toggle__icon::after { top: 6px; }

.menu-toggle[aria-expanded="true"] .menu-toggle__icon {
  background-color: transparent;
}

.menu-toggle[aria-expanded="true"] .menu-toggle__icon::before {
  top: 0;
  transform: rotate(45deg);
  background-color: var(--color-dark-900);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__icon::after {
  top: 0;
  transform: rotate(-45deg);
  background-color: var(--color-dark-900);
}

.nav-mobile {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: var(--z-overlay);
  background-color: var(--color-white);
  padding-top: 80px;
  overflow-y: auto;
}

.nav-mobile--open {
  display: block;
}

.nav-mobile__list {
  display: flex;
  flex-direction: column;
  list-style: none;
  padding: var(--space-6);
  margin: 0;
}

.nav-mobile__link {
  display: block;
  padding: var(--space-4);
  font-family: var(--font-family-heading);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  text-decoration: none;
  border-bottom: 1px solid var(--color-border-light);
  transition: color var(--transition-base);
}

.nav-mobile__link:hover {
  color: var(--color-accent-500);
}

.nav-mobile__cta {
  margin: var(--space-6) var(--space-6) 0;
}

body.menu-open {
  overflow: hidden;
}

/* ==========================================================================
   4. HERO - dark full-screen with bold text
   ========================================================================== */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background-color: var(--color-dark-900);
  overflow: hidden;
  padding: var(--space-20) 0;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(249, 115, 22, 0.15) 0%, transparent 60%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(249, 115, 22, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.hero__inner {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-4);
  position: relative;
  z-index: 1;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-accent-400);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  margin-bottom: var(--space-6);
}

.hero__eyebrow::before {
  content: "";
  display: inline-block;
  width: 32px;
  height: 2px;
  background-color: var(--color-accent-500);
}

.hero__title {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-extrabold);
  color: var(--color-white);
  margin-bottom: var(--space-6);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
  max-width: 800px;
}

.hero__title .highlight {
  color: var(--color-accent-500);
}

.hero__description {
  font-size: var(--font-size-lg);
  color: var(--color-dark-200);
  margin-bottom: var(--space-8);
  line-height: var(--line-height-relaxed);
  max-width: 560px;
}

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

.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-16);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-dark-600);
  max-width: 500px;
}

.hero__stat-number {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  line-height: 1;
  margin-bottom: var(--space-1);
}

.hero__stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-dark-200);
}

/* ==========================================================================
   5. SECTIONS
   ========================================================================== */

.section {
  padding: var(--space-20) 0;
  position: relative;
}

.section--gray {
  background-color: var(--color-bg-secondary);
}

.section--dark {
  background-color: var(--color-bg-dark);
  color: var(--color-white);
}

.section__header {
  margin-bottom: var(--space-12);
  max-width: 640px;
}

.section__header--center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.section__title {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-heading);
  margin-bottom: var(--space-4);
  letter-spacing: var(--letter-spacing-tight);
  line-height: var(--line-height-snug);
}

.section--dark .section__title {
  color: var(--color-white);
}

.section__description {
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 0;
}

.section--dark .section__description {
  color: var(--color-dark-200);
}

/* ==========================================================================
   6. SERVICES - grid of service cards
   ========================================================================== */

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

.service-card {
  padding: var(--space-8);
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-card);
  transition: all var(--transition-base);
}

.service-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
  border-color: var(--color-accent-200);
}

.service-card__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-accent-50);
  border-radius: var(--radius-lg);
  color: var(--color-accent-500);
  margin-bottom: var(--space-5);
}

.service-card__icon svg {
  width: 28px;
  height: 28px;
}

.service-card__title {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-heading);
  margin-bottom: var(--space-3);
}

.service-card__description {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 0;
}

/* ==========================================================================
   7. PORTFOLIO - project showcase grid (3 cols x 2 rows per page)
   ========================================================================== */

.portfolio-grid {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: auto auto;
  gap: var(--space-6);
  min-height: 400px;
}

.portfolio-item {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background-color: var(--color-dark-700);
  cursor: pointer;
  transition: transform var(--transition-base);
}

.portfolio-item:hover {
  transform: scale(1.02);
}

.portfolio-item__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  transition: transform var(--transition-slow);
}

.portfolio-item:hover .portfolio-item__image {
  transform: scale(1.05);
}

.portfolio-item__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(43, 54, 97, 0.92) 0%, rgba(43, 54, 97, 0.3) 50%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-6);
  transition: opacity var(--transition-base);
}

.portfolio-item__category {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-accent-400);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}

.portfolio-item__title {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin-bottom: 0;
}

/* ==========================================================================
   7b. PAGINATION
   ========================================================================== */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-10);
}

.pagination__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  height: 44px;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-family-body);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.pagination__btn:hover:not(:disabled) {
  color: var(--color-accent-600);
  border-color: var(--color-accent-500);
  background-color: var(--color-accent-50);
}

.pagination__btn:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

.pagination__btn--active {
  background-color: var(--color-accent-500);
  color: var(--color-white);
  border-color: var(--color-accent-500);
}

.pagination__btn--active:hover:not(:disabled) {
  background-color: var(--color-accent-600);
  color: var(--color-white);
  border-color: var(--color-accent-600);
}

.pagination__btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.pagination__btn--prev svg,
.pagination__btn--next svg {
  width: 18px;
  height: 18px;
}

/* ==========================================================================
   8. ABOUT / WHY US - stats + text
   ========================================================================== */

.about-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  align-items: center;
}

.about-section__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.about-section__title {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-heading);
  line-height: var(--line-height-snug);
  margin-bottom: 0;
}

.about-section__text {
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 0;
}

.about-section__features {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.about-section__features li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.about-section__features li::before {
  content: "";
  width: 8px;
  height: 8px;
  background-color: var(--color-accent-500);
  border-radius: 50%;
  flex-shrink: 0;
}

.about-section__media {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background-color: var(--color-dark-700);
}

.about-section__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
}

/* ==========================================================================
   9. PROCESS - numbered steps
   ========================================================================== */

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

.process-step {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  counter-increment: process-counter;
  position: relative;
  padding-left: var(--space-16);
}

.process-step::before {
  content: counter(process-counter, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-family-heading);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-accent-200);
  line-height: 1;
}

.process-step__title {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-heading);
  margin-bottom: 0;
}

.process-step__description {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 0;
}

/* ==========================================================================
   10. CONTACT - form + info side by side
   ========================================================================== */

.contact-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
}

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

.contact-info__title {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin-bottom: var(--space-3);
}

.contact-info__text {
  font-size: var(--font-size-md);
  color: var(--color-dark-200);
  line-height: var(--line-height-relaxed);
  margin-bottom: 0;
}

.contact-info__item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-base);
  color: var(--color-dark-100);
}

.contact-info__item svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--color-accent-500);
}

.contact-form {
  background-color: var(--color-dark-700);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  border: 1px solid var(--color-dark-500);
}

.contact-form .form-group label {
  color: var(--color-dark-100);
}

.contact-form .form-group input,
.contact-form .form-group textarea {
  background-color: var(--color-dark-800);
  border-color: var(--color-dark-500);
  color: var(--color-white);
}

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

.contact-form .form-group input:focus,
.contact-form .form-group textarea:focus {
  border-color: var(--color-accent-500);
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.15);
}

/* ==========================================================================
   11. CTA BANNER
   ========================================================================== */

.cta-banner {
  background: linear-gradient(135deg, var(--color-accent-600) 0%, var(--color-accent-500) 50%, var(--color-accent-400) 100%);
  border-radius: var(--radius-2xl);
  padding: var(--space-12) var(--space-8);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  pointer-events: none;
}

.cta-banner__title {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin-bottom: var(--space-4);
  position: relative;
  z-index: 1;
}

.cta-banner__description {
  font-size: var(--font-size-md);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--space-6);
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  z-index: 1;
}

.cta-banner__actions {
  position: relative;
  z-index: 1;
}

.cta-banner .btn--dark {
  background-color: var(--color-dark-900);
  border-color: var(--color-dark-900);
}

.cta-banner .btn--dark:hover {
  background-color: var(--color-dark-800);
  border-color: var(--color-dark-800);
}

/* ==========================================================================
   12. FOOTER
   ========================================================================== */

.site-footer {
  background-color: var(--color-dark-900);
  color: var(--color-dark-100);
  padding: var(--space-16) 0 0;
}

.site-footer__inner {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-4);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  padding-bottom: var(--space-10);
}

.site-footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-family-heading);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  text-decoration: none;
  margin-bottom: var(--space-4);
}

.site-footer__tagline {
  font-size: var(--font-size-sm);
  color: var(--color-dark-200);
  line-height: var(--line-height-relaxed);
  max-width: 300px;
  margin-bottom: var(--space-5);
}

.site-footer__heading {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  margin-bottom: var(--space-4);
}

.site-footer__nav {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.site-footer__link {
  color: var(--color-dark-200);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition-base);
}

.site-footer__link:hover {
  color: var(--color-accent-400);
}

.site-footer__bottom {
  border-top: 1px solid var(--color-dark-600);
  padding: var(--space-5) 0;
}

.site-footer__bottom-inner {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: center;
  text-align: center;
}

.site-footer__copyright {
  font-size: var(--font-size-sm);
  color: var(--color-dark-300);
  margin-bottom: 0;
}