/* Cirdz components — UI Concept v1.0 Hybrid A+B */

/* —— Header —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: var(--color-canvas);
  transition: box-shadow var(--dur-mid) var(--ease-out),
    border-color var(--dur-mid) var(--ease-out);
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: var(--space-5);
}

.site-logo {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.site-nav__links {
  display: flex;
  gap: var(--space-5);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav__links a {
  font-size: var(--type-body-sm);
  text-decoration: none;
  color: var(--color-text-muted);
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
  transition: color var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out);
}

.site-nav__links a:hover,
.site-nav__links a[aria-current="page"] {
  color: var(--color-text);
  border-bottom-color: var(--color-signal);
}

.lang-switch {
  display: flex;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--type-label);
  letter-spacing: 0.04em;
}

.lang-switch a {
  text-decoration: none;
  color: var(--color-text-muted);
  transition: color var(--dur-fast) var(--ease-out);
}

.lang-switch a[aria-current="true"] {
  color: var(--color-text);
  font-weight: 600;
}

.lang-switch__sep {
  color: var(--color-border);
  user-select: none;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-body);
  font-size: var(--type-body-sm);
  cursor: pointer;
  color: var(--color-text);
}

@media (max-width: 768px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-5);
    padding: var(--space-5) var(--margin-inline) var(--space-6);
    background: var(--color-canvas);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--dur-mid) var(--ease-out),
      opacity var(--dur-mid) var(--ease-out);
  }

  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .site-nav__links {
    flex-direction: column;
    gap: var(--space-4);
  }

  .site-nav .btn {
    width: 100%;
    justify-content: center;
  }
}

/* —— Buttons & links —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 44px;
  padding: 0.7em 1.35em;
  font-family: var(--font-body);
  font-size: var(--type-body-sm);
  font-weight: 500;
  line-height: 1;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out);
}

.btn--primary {
  background: var(--color-text);
  color: var(--color-on-primary);
}

.btn--primary:hover {
  background: var(--color-cta-hover);
  color: var(--color-on-primary);
}

.link-text {
  font-size: var(--type-body-sm);
  color: var(--color-text);
  text-decoration: none;
  border-bottom: 1px solid var(--color-border);
  transition: border-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out);
}

.link-text:hover {
  border-bottom-color: var(--color-interactive);
  color: var(--color-interactive-hover);
}

.cta-cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-5);
}

/* —— Hero (typography-first, left-weighted) —— */
.hero {
  min-height: calc(100vh - var(--header-h));
  display: flex;
  align-items: center;
  padding-block: var(--space-10) var(--space-11);
}

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

.hero__content .display-xl {
  max-width: 14ch;
  margin-bottom: var(--space-6);
}

.hero__content .body-lg {
  margin-bottom: var(--space-7);
}

.hero__content .signal-line {
  margin-top: var(--space-8);
}

/* Optional product visual — only when real UI asset exists */
.hero--with-visual .hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: var(--gutter);
  align-items: center;
  width: 100%;
}

.hero--with-visual .hero__content {
  max-width: none;
  grid-column: 1 / span 7;
}

.hero__visual {
  grid-column: 8 / span 5;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  overflow: hidden;
  aspect-ratio: 5 / 4;
}

.hero__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

@media (max-width: 900px) {
  .hero {
    min-height: auto;
    padding-block: var(--space-8) var(--space-10);
  }

  .hero__content .display-xl {
    max-width: none;
  }

  .hero--with-visual .hero__grid {
    grid-template-columns: 1fr;
  }

  .hero--with-visual .hero__content,
  .hero__visual {
    grid-column: 1;
  }

  .hero__visual {
    order: -1;
    max-height: 240px;
    aspect-ratio: 16 / 10;
  }
}

/* —— Service list (rows, not cards) —— */
.service-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--color-border);
  width: 100%;
}

.service-list__row {
  display: grid;
  grid-template-columns: 4rem minmax(0, 1fr) auto;
  gap: var(--space-6);
  align-items: baseline;
  padding-block: var(--space-6);
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  color: inherit;
  position: relative;
  transition: background var(--dur-fast) var(--ease-out);
}

.service-list__row::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0;
  background: var(--color-signal);
  transition: width var(--dur-mid) var(--ease-out);
}

.service-list__row:hover {
  background: transparent;
}

.service-list__row:hover::before {
  width: 2px;
}

.service-list__row:hover .service-list__title {
  color: var(--color-text);
}

.service-list__row:hover .service-list__link {
  color: var(--color-text);
  border-bottom-color: var(--color-signal);
}

.service-list__num {
  font-family: var(--font-mono);
  font-size: var(--type-label);
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  padding-top: 0.35em;
}

.service-list__title {
  display: block;
  font-size: var(--type-heading-sm);
  font-weight: 500;
  margin: 0 0 var(--space-2);
  transition: color var(--dur-fast) var(--ease-out);
}

.service-list__row:first-child .service-list__title,
.service-list__row:nth-child(2) .service-list__title {
  font-size: 1.375rem;
}

.service-list__desc {
  display: block;
  margin: 0;
  color: var(--color-text-muted);
  font-size: var(--type-body-lg);
  line-height: 1.55;
  max-width: 38em;
}

.service-list__link {
  font-size: var(--type-body-sm);
  color: var(--color-text-muted);
  white-space: nowrap;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  align-self: center;
  transition: color var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out);
}

@media (max-width: 768px) {
  .service-list__row {
    grid-template-columns: 2.75rem 1fr;
    gap: var(--space-4);
    padding-block: var(--space-5);
  }

  .service-list__link {
    grid-column: 2;
    justify-self: start;
    margin-top: var(--space-2);
  }

  .service-list__desc {
    font-size: var(--type-body-md);
  }
}

/* —— Work modules (editorial) —— */
.work-featured {
  margin-bottom: var(--space-8);
}

.work-module {
  display: block;
  text-decoration: none;
  color: inherit;
}

.work-module__media {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  aspect-ratio: 16 / 10;
  overflow: hidden;
  margin-bottom: var(--space-4);
  transition: border-color var(--dur-mid) var(--ease-out);
}

.work-module__media img,
.work-module__media svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--dur-mid) var(--ease-out);
}

.work-featured .work-module__media {
  aspect-ratio: 21 / 11;
}

.work-module:hover .work-module__media {
  border-color: rgba(42, 40, 37, 0.4);
}

.work-module:hover .work-module__media img,
.work-module:hover .work-module__media svg {
  transform: scale(1.02);
}

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

.work-module__caption .heading-sm {
  margin: 0;
  transition: text-decoration-color var(--dur-fast) var(--ease-out);
}

.work-module:hover .work-module__caption .heading-sm {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.25em;
  text-decoration-color: var(--color-border);
}

.work-module__meta {
  margin: 0;
  font-size: var(--type-body-sm);
  color: var(--color-text-muted);
}

.work-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-7) var(--gutter);
}

@media (max-width: 768px) {
  .work-grid {
    grid-template-columns: 1fr;
    gap: var(--space-7);
  }

  .work-featured .work-module__media {
    aspect-ratio: 16 / 10;
  }
}

.section-footer-link {
  margin-top: var(--space-8);
}

/* —— Process timeline (full-width schematic) —— */
.process {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--gutter);
  margin-top: 0;
  width: 100%;
  position: relative;
}

.process__step {
  position: relative;
  padding-top: var(--space-6);
  min-width: 0;
}

.process__node {
  position: absolute;
  top: 0;
  left: 0;
  width: 6px;
  height: 6px;
  background: var(--color-signal);
  border-radius: 0;
}

.process__connector {
  position: absolute;
  top: 2.5px;
  left: 14px;
  width: calc(100% + var(--gutter) - 14px);
  height: 1px;
  background: var(--color-border);
  transform-origin: left center;
}

.process__step:last-child .process__connector {
  display: none;
}

.process__num {
  font-family: var(--font-mono);
  font-size: var(--type-label);
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin: 0 0 var(--space-3);
}

.process__title {
  font-size: var(--type-heading-sm);
  font-weight: 500;
  margin: 0 0 var(--space-3);
}

.process__step .body-sm {
  max-width: 18em;
}

@media (max-width: 900px) {
  .process {
    grid-template-columns: 1fr;
    gap: 0;
    border-left: 1px solid var(--color-border);
    padding-left: var(--space-5);
    margin-left: var(--space-1);
  }

  .process__step {
    padding-block: var(--space-5);
    padding-top: var(--space-5);
  }

  .process__node {
    left: calc(-1 * var(--space-5) - 3px);
    top: calc(var(--space-5) + 0.45em);
  }

  .process__connector {
    display: none;
  }
}

/* —— Philosophy —— */
.philosophy {
  max-width: var(--width-standard);
  position: relative;
  padding-left: var(--space-6);
}

.philosophy::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.2em;
  bottom: 0.2em;
  width: 1px;
  background: var(--color-signal);
}

.philosophy p {
  font-family: var(--font-display);
  font-size: var(--type-display-lg);
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin: 0 0 var(--space-5);
}

.philosophy p:last-child {
  font-size: var(--type-heading-sm);
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--color-text-muted);
  letter-spacing: 0;
  line-height: 1.45;
}

/* —— CTA section —— */
.cta-section {
  padding-block: var(--space-10);
}

.cta-section .body-lg {
  margin-bottom: var(--space-5);
}

.cta-section .body-sm {
  margin-top: var(--space-4);
}

/* —— Area modules (Services page) —— */
.area-module {
  padding-block: var(--space-8);
  border-bottom: 1px solid var(--color-border);
  max-width: 100%;
}

.area-module:first-of-type {
  border-top: 1px solid var(--color-border);
}

.area-module .heading-md {
  margin-bottom: var(--space-4);
}

.area-module .body-md {
  max-width: var(--width-standard);
}

.area-module__includes {
  list-style: none;
  margin: var(--space-6) 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3) var(--space-7);
  max-width: var(--width-standard);
}

.area-module__includes li {
  font-size: var(--type-body-md);
  color: var(--color-text-muted);
  padding-left: var(--space-4);
  position: relative;
}

.area-module__includes li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 4px;
  height: 4px;
  background: var(--color-signal);
}

.area-module__outcome {
  font-size: var(--type-body-lg);
  font-weight: 500;
  margin: 0;
}

@media (max-width: 600px) {
  .area-module__includes {
    grid-template-columns: 1fr;
  }
}

.engage-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin-top: var(--space-7);
  border-top: 1px solid var(--color-border);
}

.engage-module {
  padding: var(--space-6) var(--space-5) var(--space-6) 0;
  border-bottom: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border);
}

.engage-module:last-child {
  border-right: 0;
  padding-right: 0;
}

.engage-module:first-child {
  padding-left: 0;
}

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

  .engage-module {
    border-right: 0;
    padding-inline: 0;
  }
}

/* —— Principles —— */
.principle-list {
  list-style: none;
  margin: var(--space-7) 0 0;
  padding: 0;
  width: 100%;
}

.principle-list li {
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: var(--space-6);
  padding-block: var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.principle-list li:first-child {
  border-top: 1px solid var(--color-border);
}

/* —— Contact form —— */
.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-10) var(--gutter);
  margin-top: var(--space-8);
  align-items: start;
}

.contact-layout__form,
.contact-layout__aside {
  min-width: 0;
}

.form-field {
  margin-bottom: var(--space-5);
}

.form-field label {
  display: block;
  font-size: var(--type-body-sm);
  margin-bottom: var(--space-2);
  color: var(--color-text);
}

.form-field input,
.form-field textarea,
.form-field select {
  width: 100%;
  min-height: 48px;
  padding: 0.7em 0.85em;
  font-family: var(--font-body);
  font-size: var(--type-body-md);
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--dur-fast) var(--ease-out);
  appearance: none;
}

.form-field select {
  background-image: linear-gradient(45deg, transparent 50%, var(--color-text-muted) 50%),
    linear-gradient(135deg, var(--color-text-muted) 50%, transparent 50%);
  background-position: calc(100% - 18px) calc(50% - 2px), calc(100% - 12px) calc(50% - 2px);
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  padding-right: 2.5em;
}

.form-field textarea {
  min-height: 160px;
  resize: vertical;
}

.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  border-color: var(--color-interactive);
  outline: none;
  box-shadow: 0 0 0 2px rgba(47, 90, 140, 0.15);
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 0.7;
}

.expectations {
  list-style: none;
  margin: var(--space-5) 0 0;
  padding: 0;
}

.expectations li {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: var(--space-4);
  padding-block: var(--space-5);
  border-bottom: 1px solid var(--color-border);
  font-size: var(--type-body-md);
  line-height: 1.55;
  color: var(--color-text);
}

.expectations li:first-child {
  border-top: 1px solid var(--color-border);
}

.expectations__num {
  font-family: var(--font-mono);
  font-size: var(--type-label);
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  padding-top: 0.2em;
}

@media (max-width: 900px) {
  .contact-layout {
    grid-template-columns: 1fr;
    gap: var(--space-9);
  }
}

.form-status {
  display: none;
  margin-top: var(--space-5);
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--type-body-sm);
}

.form-status.is-visible {
  display: block;
}

.form-status--success {
  border-color: var(--color-success);
  color: var(--color-success);
  background: var(--color-surface);
}

.form-status--error {
  border-color: var(--color-error);
  color: var(--color-error);
  background: var(--color-surface);
}

.btn.is-loading {
  opacity: 0.7;
  pointer-events: none;
}

/* —— Case study —— */
.case-hero {
  padding-top: var(--space-9);
  padding-bottom: var(--space-7);
}

.case-hero .display-lg,
.case-hero .heading-md {
  margin-bottom: var(--space-4);
}

.case-overview {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin-top: var(--space-4);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

.case-overview > div {
  padding: var(--space-5);
  border-right: 1px solid var(--color-border);
}

.case-overview > div:last-child {
  border-right: 0;
}

.case-overview dt {
  font-family: var(--font-mono);
  font-size: var(--type-label);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin: 0 0 var(--space-3);
}

.case-overview dd {
  margin: 0;
  font-size: var(--type-body-md);
  line-height: 1.45;
}

.case-media {
  position: relative;
  border: 1px solid var(--color-border);
  overflow: hidden;
  background: var(--color-surface);
  margin-top: var(--space-6);
}

.case-media img,
.case-media svg {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.case-media--hero {
  margin-top: var(--space-7);
}

.case-prose {
  max-width: var(--width-standard);
}

.results-list {
  margin: var(--space-5) 0 0;
  padding-left: 0;
  list-style: none;
}

.results-list li {
  margin-bottom: var(--space-3);
  padding-left: var(--space-5);
  position: relative;
  font-size: var(--type-body-lg);
}

.results-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  background: var(--color-signal);
}

.case-next {
  padding-top: var(--space-6);
}

@media (max-width: 900px) {
  .case-overview {
    grid-template-columns: 1fr 1fr;
  }

  .case-overview > div:nth-child(2) {
    border-right: 0;
  }

  .case-overview > div:nth-child(1),
  .case-overview > div:nth-child(2) {
    border-bottom: 1px solid var(--color-border);
  }
}

@media (max-width: 500px) {
  .case-overview {
    grid-template-columns: 1fr;
  }

  .case-overview > div {
    border-right: 0;
    border-bottom: 1px solid var(--color-border);
  }

  .case-overview > div:last-child {
    border-bottom: 0;
  }
}

/* —— Legal —— */
.legal-page {
  max-width: var(--width-standard);
  padding-block: var(--space-9) var(--space-11);
}

.legal-page h1 {
  font-family: var(--font-display);
  font-size: var(--type-display-lg);
  font-weight: 400;
  letter-spacing: -0.015em;
  margin: 0 0 var(--space-3);
}

.legal-page .mono-label {
  margin-bottom: var(--space-6);
}

.legal-page h2 {
  font-family: var(--font-body);
  font-size: var(--type-heading-sm);
  font-weight: 500;
  margin: var(--space-7) 0 var(--space-3);
}

.legal-page p {
  margin: 0 0 var(--space-4);
  color: var(--color-text);
  font-size: var(--type-body-md);
  line-height: 1.65;
}

.legal-page ul {
  margin: 0 0 var(--space-4);
  padding-left: 1.1em;
  color: var(--color-text);
}

.legal-page li {
  margin-bottom: var(--space-2);
  font-size: var(--type-body-md);
}

/* —— Footer —— */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-8);
  margin-top: 0;
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6) var(--space-8);
  justify-content: space-between;
  align-items: flex-start;
}

.site-footer nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer a {
  font-size: var(--type-body-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out);
}

.site-footer a:hover {
  color: var(--color-text);
}

.site-footer__meta {
  font-size: var(--type-body-sm);
  color: var(--color-text-muted);
}

.site-footer__meta a {
  margin-right: var(--space-3);
}