/* ============================================================
   COMPONENTS — apposto.pl design system
   Monochrom + pill buttons + nowoczesny charakter
   ============================================================ */

/* --- BUTTONS (pill) ----------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 38px;
  padding: 0 20px;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

.btn--primary {
  background: var(--ink);
  color: var(--accent-ink);
  border-color: var(--ink);
}

.btn--primary:hover {
  background: var(--ink-2);
  border-color: var(--ink-2);
  transform: translateY(-1px);
}

.btn--secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}

.btn--secondary:hover {
  border-color: var(--ink);
}

.btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: transparent;
  padding: 0 12px;
}

.btn--ghost:hover {
  background: rgba(0, 0, 0, 0.04);
}

.btn--large {
  height: 42px;
  padding: 0 24px;
  font-size: 0.875rem;
}

.btn--inverse {
  background: var(--inverse-ink);
  color: var(--inverse-bg);
  border-color: var(--inverse-ink);
}

.btn--inverse:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

.btn--inverse-outline {
  background: transparent;
  color: var(--inverse-ink);
  border-color: var(--inverse-line);
}

.btn--inverse-outline:hover {
  border-color: var(--inverse-ink);
}

/* --- TEXT LINK ---------------------------------------------- */

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-small);
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
  transition: gap 0.2s ease;
}

.link-arrow::after {
  content: "\2192";
  transition: transform 0.2s ease;
}

.link-arrow:hover::after {
  transform: translateX(3px);
}

.link-arrow:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

/* --- SECTION HEADER ----------------------------------------- */

.section-header {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 32px;
}

.section-header__intro {
  color: var(--ink-2);
  max-width: 60ch;
  font-size: var(--fs-small);
}

.section-header--split {
  flex-direction: row;
  justify-content: space-between;
  align-items: flex-end;
  gap: 48px;
}

@media (max-width: 768px) {
  .section-header--split {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* --- TAG (pill) --------------------------------------------- */

.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  line-height: 1;
  white-space: nowrap;
}

.tag--filled {
  background: var(--ink);
  color: var(--accent-ink);
}

.tag--outline {
  background: transparent;
  color: var(--ink-3);
  border: 1px solid var(--line);
}

.tag--subtle {
  background: rgba(0, 0, 0, 0.05);
  color: var(--ink-2);
}

/* --- OFFER CARD (cleaner, list-style) ----------------------- */

.offer-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--ink);
  transition: all 0.2s ease;
  position: relative;
}

.offer-card:hover {
  border-color: var(--ink-3);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
}

.offer-card:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

.offer-card__tag {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--ink-3);
}

.offer-card__title {
  font-size: 1.125rem;
  line-height: 1.25;
  font-weight: 500;
  letter-spacing: var(--ls-tight);
}

.offer-card__desc {
  font-size: 0.8125rem;
  line-height: var(--lh-body);
  color: var(--ink-2);
  flex-grow: 1;
}

.offer-card__link {
  font-size: 0.8125rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: auto;
  transition: gap 0.2s ease;
}

.offer-card__link::after {
  content: "\2192";
  transition: transform 0.2s ease;
}

.offer-card:hover .offer-card__link::after {
  transform: translateX(3px);
}

/* --- CASE STUDY CARD ---------------------------------------- */

.case-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-decoration: none;
  color: var(--ink);
}

.case-card:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 4px;
  border-radius: var(--radius);
}

.case-card__image {
  aspect-ratio: 16 / 10;
  background: var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.3s ease;
}

.case-card:hover .case-card__image {
  transform: scale(1.02);
}

.case-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-card__meta {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--ink-3);
}

.case-card__title {
  font-size: 1rem;
  line-height: 1.3;
  font-weight: 500;
  letter-spacing: var(--ls-tight);
}

.case-card__summary {
  font-size: 0.8125rem;
  line-height: var(--lh-body);
  color: var(--ink-2);
}

.case-card__effect {
  font-size: 0.8125rem;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

/* --- FACT TABLE (case study detail) ------------------------- */

.fact-table {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
}

.fact-table__item {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.fact-table__label {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 4px;
}

.fact-table__value {
  font-size: var(--fs-small);
}

@media (max-width: 640px) {
  .fact-table {
    grid-template-columns: 1fr;
  }
}

/* --- TESTIMONIAL -------------------------------------------- */

.testimonial {
  display: flex;
  flex-direction: column;
  gap: 20px;
  justify-content: space-between;
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.testimonial__quote {
  font-size: 0.9rem;
  line-height: 1.6;
  font-style: italic;
}

.testimonial__quote::before {
  content: "\201E";
}

.testimonial__quote::after {
  content: "\201D";
}

.testimonial__footer {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.testimonial__logo {
  width: 100px;
}

.testimonial__author {
  font-size: 0.8125rem;
  color: var(--ink-2);
}

.testimonial__author strong {
  color: var(--ink);
  font-weight: 600;
  display: block;
}

/* --- FAQ ---------------------------------------------------- */

.faq {
  border-top: 1px solid var(--line);
}

.faq__item {
  border-bottom: 1px solid var(--line);
}

.faq__item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
  font-size: var(--fs-body);
  font-weight: 500;
  cursor: pointer;
  list-style: none;
}

.faq__item summary::-webkit-details-marker {
  display: none;
}

.faq__item summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.125rem;
  font-weight: 400;
  flex-shrink: 0;
  transition: transform 0.15s;
}

.faq__item[open] summary::after {
  content: "\2212";
}

.faq__item summary:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

.faq__answer {
  padding-bottom: 20px;
  color: var(--ink-2);
  max-width: 60ch;
  line-height: var(--lh-body);
  font-size: var(--fs-small);
}

/* --- FORM --------------------------------------------------- */

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 0.8125rem;
  font-weight: 500;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 10px 14px;
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.15s;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--ink);
  box-shadow: 0 0 0 1px var(--ink);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--ink-3);
}

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

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236B7078' fill='none' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

.form-error {
  font-size: 0.8125rem;
  color: #B91C1C;
}

.form-help {
  font-size: 0.8125rem;
  color: var(--ink-3);
}

/* --- LOGO BAR ----------------------------------------------- */

.logo-bar {
  display: flex;
  align-items: center;
  gap: 40px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.logo-bar__label {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--ink-3);
  white-space: nowrap;
  flex-shrink: 0;
}

.logo-bar__logos {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px;
  flex-grow: 1;
}

.logo-bar__logos img {
  height: 28px;
  width: auto;
  filter: grayscale(100%);
  opacity: 0.5;
  transition: opacity 0.2s;
}

.logo-bar__logos img:hover {
  opacity: 0.85;
}

@media (max-width: 768px) {
  .logo-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
}

/* --- LOGO GRID ---------------------------------------------- */

.logo-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.logo-grid__item {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px 16px;
  background: var(--bg);
  min-height: 72px;
}

.logo-grid__item img {
  max-height: 32px;
  max-width: 100px;
  width: auto;
  filter: grayscale(100%);
  opacity: 0.45;
  transition: opacity 0.2s;
}

.logo-grid__item:hover img {
  opacity: 0.75;
}

@media (max-width: 768px) {
  .logo-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 480px) {
  .logo-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* --- CTA BANNER --------------------------------------------- */

.cta-banner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 48px;
  padding: 48px 56px;
  background: var(--ink);
  color: var(--inverse-ink);
  border-radius: 12px;
}

.cta-banner__content {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 640px;
}

.cta-banner__title {
  font-size: var(--fs-h2);
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-tight);
  font-weight: 400;
}

.cta-banner__text {
  color: var(--inverse-ink-2);
  line-height: var(--lh-body);
  font-size: var(--fs-small);
}

@media (max-width: 768px) {
  .cta-banner {
    flex-direction: column;
    align-items: flex-start;
    padding: 32px 24px;
  }
}

/* --- EXPERIENCE STEP ---------------------------------------- */

.step {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 20px;
  border-top: 2px solid var(--line);
}

.step--active {
  border-top-color: var(--ink);
}

.step__number {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  color: var(--ink-3);
}

.step__title {
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.3;
}


.step__time {
  font-size: var(--fs-label);
  font-weight: 600;
  line-height: 1;
}

.step__text {
  font-size: var(--fs-small);
  line-height: 1.65;
  color: var(--ink-2);
}

/* --- SITUATION GRID ----------------------------------------- */

.situation-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.situation-grid__item {
  background: var(--bg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.situation-grid__item h3 {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.35;
}

.situation-grid__item p {
  font-size: 0.8125rem;
  line-height: var(--lh-body);
  color: var(--ink-2);
}

@media (max-width: 768px) {
  .situation-grid {
    grid-template-columns: 1fr;
  }
}

/* --- COLLABORATION PATHS ------------------------------------ */

.path-card {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 36px;
  border-radius: var(--radius);
}

.path-card--dark {
  background: var(--inverse-bg);
  color: var(--inverse-ink);
}

.path-card--light {
  background: var(--surface);
  border: 1px solid var(--line);
}

.path-card__title {
  font-size: clamp(1.375rem, 2.5vw, 1.75rem);
  line-height: 1.2;
  font-weight: 500;
  letter-spacing: var(--ls-tight);
}

.path-card__desc {
  line-height: var(--lh-body);
  font-size: var(--fs-small);
}

.path-card--dark .path-card__desc {
  color: var(--inverse-ink-2);
}

.path-card--light .path-card__desc {
  color: var(--ink-2);
}

.path-card__list {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.path-card__list li {
  padding: 12px 0;
  font-size: var(--fs-small);
}

.path-card--dark .path-card__list {
  border-top: 1px solid var(--inverse-line);
}

.path-card--dark .path-card__list li {
  border-bottom: 1px solid var(--inverse-line);
}

.path-card--light .path-card__list {
  border-top: 1px solid var(--line);
}

.path-card--light .path-card__list li {
  border-bottom: 1px solid var(--line);
}

.path-card__action {
  margin-top: auto;
  padding-top: 8px;
}

@media (max-width: 768px) {
  .path-card {
    padding: 28px 24px;
  }
}

/* --- RESPONSIBILITY GRID (inverse bg) ----------------------- */

.responsibility-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.responsibility-grid__item {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 20px;
  border-top: 1px solid var(--inverse-line);
}

.responsibility-grid__item h3 {
  font-size: 1rem;
  font-weight: 600;
}

.responsibility-grid__item p {
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--inverse-ink-2);
}

@media (max-width: 768px) {
  .responsibility-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
}

@media (max-width: 480px) {
  .responsibility-grid {
    grid-template-columns: 1fr;
  }
}

/* --- AI COLUMNS --------------------------------------------- */

.ai-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.2s;
}

.ai-card:hover {
  border-color: var(--ink-3);
}

.ai-card__number {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  color: var(--ink-3);
}

.ai-card__title {
  font-size: 1.125rem;
  line-height: 1.25;
  font-weight: 500;
  letter-spacing: var(--ls-tight);
}

.ai-card__text {
  font-size: 0.8125rem;
  line-height: var(--lh-body);
  color: var(--ink-2);
}

/* --- INVERSE SECTION ---------------------------------------- */

.section--inverse {
  background: var(--inverse-bg);
  color: var(--inverse-ink);
}

.section--inverse--light {
  background: var(--inverse-bg-light);
  color: var(--inverse-ink);
}

.section--inverse .section-label,
.section--inverse--light .section-label {
  color: var(--inverse-ink-2);
}

.section--inverse .section-header__intro,
.section--inverse--light .section-header__intro {
  color: var(--inverse-ink-2);
}

/* --- STAT BOX ----------------------------------------------- */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.stat-grid__item {
  background: var(--surface);
  padding: 16px 18px;
}

.stat-grid__value {
  font-size: 1.625rem;
  font-weight: 500;
  line-height: 1;
  letter-spacing: var(--ls-tight);
}

.stat-grid__label {
  font-size: 0.75rem;
  color: var(--ink-3);
  margin-top: 4px;
}

/* --- ALERT / FLASH ------------------------------------------ */

.alert {
  padding: 14px 18px;
  border-radius: var(--radius);
  font-size: var(--fs-small);
}

.alert--success {
  background: #F0FDF4;
  border: 1px solid #BBF7D0;
  color: #166534;
}

.alert--error {
  background: #FEF2F2;
  border: 1px solid #FECACA;
  color: #991B1B;
}

/* --- ERROR PAGE --------------------------------------------- */

.error-page {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 60vh;
  padding: 80px 0;
}

.error-page__code {
  font-family: var(--font-mono);
  font-size: clamp(4rem, 10vw, 8rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: var(--ls-tight);
  color: var(--ink-3);
}

.error-page__title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 500;
  margin-top: 16px;
}

.error-page__text {
  font-size: var(--fs-small);
  color: var(--ink-2);
  line-height: var(--lh-body);
  margin-top: 12px;
  max-width: 420px;
  margin-inline: auto;
}

.error-page .btn {
  margin-top: 32px;
}