/* ============================================================
   Biomorph Systems — components.css
   Navbar, footer, buttons, cards, page heroes
   ============================================================ */

/* ------------------------------------------------------------
   Navigation
   ------------------------------------------------------------ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  background-color: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: background-color var(--transition-normal),
              border-color var(--transition-normal);
}

.nav--light {
  background-color: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid var(--color-gray-mid);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.nav__logo-img {
  height: 40px;
  width: auto;
  max-width: 220px;
  /* Dark_White_Cyan_Transparent has white/cyan paths — correct on dark nav */
}

/* Desktop links */
.nav__links {
  display: none;
  align-items: center;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .nav__links {
    display: flex;
  }
}

.nav__link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: rgba(255, 255, 255, 0.8);
  letter-spacing: 0.02em;
  transition: color var(--transition-fast);
  position: relative;
  padding-block: var(--space-1);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-cyan);
  transform: scaleX(0);
  transition: transform var(--transition-fast);
  transform-origin: left;
}

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

.nav__link:hover::after,
.nav__link.is-active::after {
  transform: scaleX(1);
}

.nav__link.is-active {
  color: var(--color-white);
}

/* CTA link in nav */
.nav__link--cta {
  background-color: var(--color-purple);
  color: var(--color-white) !important;
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  transition: background-color var(--transition-fast) !important;
}

.nav__link--cta::after {
  display: none;
}

.nav__link--cta:hover {
  background-color: var(--color-purple-dark) !important;
}

/* Hamburger button */
.nav__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: var(--space-1);
  cursor: pointer;
  background: none;
  border: none;
}

@media (min-width: 768px) {
  .nav__hamburger {
    display: none;
  }
}

.nav__hamburger-line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-white);
  border-radius: var(--radius-full);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
  transform-origin: center;
}

/* Hamburger → X animation */
.nav__hamburger[aria-expanded="true"] .nav__hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__hamburger[aria-expanded="true"] .nav__hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav__hamburger[aria-expanded="true"] .nav__hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu */
.nav__mobile {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background-color: rgba(0, 0, 0, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal), transform var(--transition-normal);
  z-index: 99;
}

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

.nav__mobile-link {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: rgba(255, 255, 255, 0.85);
  padding: var(--space-3) var(--space-2);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav__mobile-link:hover,
.nav__mobile-link.is-active {
  color: var(--color-white);
  background-color: rgba(255, 255, 255, 0.06);
}

.nav__mobile-link--cta {
  margin-top: var(--space-3);
  background-color: var(--color-purple);
  color: var(--color-white) !important;
  text-align: center;
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
}

.nav__mobile-link--cta:hover {
  background-color: var(--color-purple-dark) !important;
}

/* Body offset for fixed nav */
.nav-offset {
  padding-top: var(--nav-height);
}

/* ------------------------------------------------------------
   Footer
   ------------------------------------------------------------ */
.footer {
  background-color: var(--color-black);
  color: var(--color-white);
  padding-block: var(--space-16) var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

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

@media (min-width: 768px) {
  .footer__inner {
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: var(--space-12);
  }
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: flex-start;
}

.footer__logo {
  display: block;
  height: auto;
  width: 200px;
  max-width: 100%;
  /* Wordmark is purple — invert to white on dark footer */
  filter: brightness(0) invert(1);
}

.footer__tagline {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.55);
  line-height: var(--line-height-relaxed);
  max-width: 280px;
}

.footer__col-heading {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: var(--space-4);
}

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

.footer__link {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.65);
  transition: color var(--transition-fast);
}

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

.footer__address {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.55);
  line-height: var(--line-height-relaxed);
  font-style: normal;
}

.footer__email-link {
  color: var(--color-cyan);
  transition: color var(--transition-fast);
}

.footer__email-link:hover {
  color: var(--color-cyan-dark);
}

.footer__bottom {
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  align-items: flex-start;
}

@media (min-width: 640px) {
  .footer__bottom {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.footer__copyright {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.35);
}

/* ------------------------------------------------------------
   Buttons
   ------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-8);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition-fast),
              color var(--transition-fast),
              border-color var(--transition-fast),
              transform var(--transition-fast),
              box-shadow var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
}

.btn:focus-visible {
  outline: 3px solid var(--color-cyan);
  outline-offset: 3px;
}

.btn:active {
  transform: scale(0.97);
}

/* Primary — purple fill */
.btn--primary {
  background-color: var(--color-purple);
  color: var(--color-white);
  border-color: var(--color-purple);
}

.btn--primary:hover {
  background-color: var(--color-purple-dark);
  border-color: var(--color-purple-dark);
  box-shadow: 0 4px 16px rgba(88, 28, 135, 0.4);
}

/* Cyan — for dark backgrounds */
.btn--cyan {
  background-color: var(--color-cyan);
  color: var(--color-black);
  border-color: var(--color-cyan);
}

.btn--cyan:hover {
  background-color: var(--color-cyan-dark);
  border-color: var(--color-cyan-dark);
  box-shadow: 0 4px 16px rgba(34, 211, 238, 0.35);
}

/* Outline on dark bg */
.btn--outline-light {
  background-color: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.4);
}

.btn--outline-light:hover {
  border-color: var(--color-white);
  background-color: rgba(255, 255, 255, 0.08);
}

/* Outline on light bg */
.btn--outline-dark {
  background-color: transparent;
  color: var(--color-purple);
  border-color: var(--color-purple);
}

.btn--outline-dark:hover {
  background-color: var(--color-purple);
  color: var(--color-white);
}

/* Sizes */
.btn--lg {
  padding: var(--space-4) var(--space-10);
  font-size: var(--font-size-lg);
}

.btn--sm {
  padding: var(--space-2) var(--space-5);
  font-size: var(--font-size-sm);
}

/* Icon button (copy) */
.btn--icon {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  background-color: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn--icon:hover {
  background-color: rgba(255, 255, 255, 0.14);
  color: var(--color-white);
}

.btn--icon.is-copied {
  background-color: rgba(34, 211, 238, 0.15);
  color: var(--color-cyan);
  border-color: rgba(34, 211, 238, 0.3);
}

/* ------------------------------------------------------------
   Cards
   ------------------------------------------------------------ */
.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-mid);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

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

.card__icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-5);
  color: var(--color-purple);
}

.card__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-black);
  margin-bottom: var(--space-3);
  line-height: var(--line-height-snug);
}

.card__body {
  font-size: var(--font-size-base);
  color: var(--color-gray-text);
  line-height: var(--line-height-relaxed);
}

/* Value card (dark bg variant) */
.card--dark {
  background-color: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.08);
}

.card--dark:hover {
  background-color: rgba(255, 255, 255, 0.07);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.card--dark .card__title {
  color: var(--color-white);
}

.card--dark .card__body {
  color: rgba(255, 255, 255, 0.65);
}

.card--dark .card__icon {
  color: var(--color-cyan);
}

/* ------------------------------------------------------------
   Section header (heading + sub)
   ------------------------------------------------------------ */
.section-header {
  margin-bottom: var(--space-12);
}

.section-header--center {
  text-align: center;
}

.section-label {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-purple);
  margin-bottom: var(--space-3);
}

.section-label--cyan {
  color: var(--color-cyan);
}

.section-header__title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-4);
}

@media (min-width: 768px) {
  .section-header__title {
    font-size: var(--font-size-4xl);
  }
}

.section-header__sub {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-gray-text);
  max-width: 560px;
}

.section-header--center .section-header__sub {
  margin-inline: auto;
}

.section-header__sub--light {
  color: rgba(255, 255, 255, 0.65);
}

/* ------------------------------------------------------------
   Page hero (inner pages — About, Contact)
   ------------------------------------------------------------ */
.page-hero {
  background-color: var(--color-black);
  color: var(--color-white);
  padding-block: var(--space-20) var(--space-16);
  text-align: center;
}

.page-hero__label {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-cyan);
  margin-bottom: var(--space-4);
}

.page-hero__title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-5);
}

@media (min-width: 768px) {
  .page-hero__title {
    font-size: var(--font-size-5xl);
  }
}

.page-hero__sub {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.7);
  max-width: 540px;
  margin-inline: auto;
  line-height: var(--line-height-relaxed);
}

/* ------------------------------------------------------------
   Decorative rule
   ------------------------------------------------------------ */
.rule {
  width: 48px;
  height: 3px;
  background-color: var(--color-purple);
  border: none;
  border-radius: var(--radius-full);
  margin-block: var(--space-6);
}

.rule--cyan {
  background-color: var(--color-cyan);
}

.rule--center {
  margin-inline: auto;
}

/* ------------------------------------------------------------
   Pull-quote
   ------------------------------------------------------------ */
.pull-quote {
  max-width: 720px;
  margin-inline: auto;
  text-align: center;
}

.pull-quote__text {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-snug);
  color: var(--color-white);
}

@media (min-width: 768px) {
  .pull-quote__text {
    font-size: var(--font-size-3xl);
  }
}

.pull-quote__text::before { content: '\201C'; }
.pull-quote__text::after  { content: '\201D'; }

/* ------------------------------------------------------------
   Contact card
   ------------------------------------------------------------ */
.contact-block {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  align-items: flex-start;
}

@media (min-width: 768px) {
  .contact-block {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--space-16);
  }
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.contact-item__label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-gray-text);
}

.contact-item__value {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-black);
}

.contact-item__value--email {
  color: var(--color-purple);
  transition: color var(--transition-fast);
}

.contact-item__value--email:hover {
  color: var(--color-purple-dark);
}

.contact-email-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

/* ------------------------------------------------------------
   404 / Error page
   ------------------------------------------------------------ */
.error-page {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-8);
  background-color: var(--color-black);
  color: var(--color-white);
}

.error-page__code {
  font-size: 7rem;
  font-weight: var(--font-weight-bold);
  line-height: 1;
  color: var(--color-purple);
  margin-bottom: var(--space-4);
}

.error-page__title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-4);
}

.error-page__body {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: var(--space-8);
  max-width: 400px;
}

/* ------------------------------------------------------------
   About — Our Story two-column layout
   ------------------------------------------------------------ */
.story-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: center;
}

@media (min-width: 768px) {
  .story-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
  }
}

.story-logo {
  display: flex;
  align-items: center;
  justify-content: center;
}

.story-logo__img {
  width: 100%;
  max-width: 360px;
  height: auto;
  /* Slight purple tint feels at home on white bg — no filter needed */
}