/* ============================================================
   NORDWRIGHT — Components
   Buttons, cards, navigation, footer, form elements.
   ============================================================ */

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-body);
  font-size: var(--text-small);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.02em;
  line-height: 1;
  border-radius: var(--radius-md);
  white-space: nowrap;
  transition:
    transform var(--duration-fast) var(--ease-out),
    background-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out);
  min-height: 44px;
  min-width: 44px;
}

.btn--primary {
  background: var(--accent);
  color: var(--color-arctic-navy);
}

.btn--primary:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-glow-teal);
}

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

.btn--secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}

.btn--secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: scale(1.02);
}

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

.btn--ghost {
  background: transparent;
  color: var(--accent);
  padding: var(--space-2) var(--space-3);
}

.btn--ghost:hover {
  background: rgba(0, 229, 199, 0.08);
}

/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  padding: var(--space-4) 0;
  transition: background-color var(--duration-standard) var(--ease-out),
              padding var(--duration-standard) var(--ease-out),
              backdrop-filter var(--duration-standard) var(--ease-out);
}

.nav--scrolled {
  background: rgba(10, 22, 40, 0.85);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  padding: var(--space-3) 0;
  border-bottom: 1px solid rgba(42, 63, 102, 0.3);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.nav__wordmark {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: var(--weight-bold);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-primary);
  text-decoration: none;
}

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

@media (min-width: 1024px) {
  .nav__links {
    display: flex;
  }
}

.nav__link {
  position: relative;
  font-size: var(--text-small);
  font-weight: var(--weight-medium);
  color: var(--text-secondary);
  transition: color var(--duration-fast) var(--ease-out);
  padding: var(--space-2) 0;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width var(--duration-standard) var(--ease-out);
}

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

.nav__link:hover::after {
  width: 100%;
}

.nav__cta {
  display: none;
}

@media (min-width: 1024px) {
  .nav__cta {
    display: inline-flex;
  }
}

/* Mobile menu toggle */
.nav__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: calc(var(--z-overlay) + 1);
}

@media (min-width: 1024px) {
  .nav__toggle {
    display: none;
  }
}

.nav__toggle-line {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  position: relative;
  transition: background var(--duration-fast) var(--ease-out);
}

.nav__toggle-line::before,
.nav__toggle-line::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  transition: transform var(--duration-standard) var(--ease-out);
}

.nav__toggle-line::before { top: -7px; }
.nav__toggle-line::after  { top: 7px; }

.nav__toggle--active .nav__toggle-line {
  background: transparent;
}

.nav__toggle--active .nav__toggle-line::before {
  transform: translateY(7px) rotate(45deg);
}

.nav__toggle--active .nav__toggle-line::after {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile overlay menu */
.nav__mobile {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  background: rgba(10, 22, 40, 0.97);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-standard) var(--ease-out),
              visibility var(--duration-standard) var(--ease-out);
}

.nav__mobile--open {
  opacity: 1;
  visibility: visible;
}

.nav__mobile-link {
  font-family: var(--font-display);
  font-size: var(--text-h2);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
  transition: color var(--duration-fast) var(--ease-out);
}

.nav__mobile-link:hover {
  color: var(--accent);
}

/* ── Cards ── */
.card {
  position: relative;
  padding: var(--space-8);
  background: var(--surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition:
    transform var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out);
}

.card:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: var(--shadow-lg);
}

.card__accent {
  position: absolute;
  top: 0;
  left: var(--space-8);
  right: var(--space-8);
  height: 2px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.card__title {
  font-family: var(--font-display);
  font-size: var(--text-h3);
  font-weight: var(--weight-semibold);
  margin-bottom: var(--space-2);
}

.card__subtitle {
  font-size: var(--text-body);
  font-style: italic;
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
}

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

.card__list-item {
  font-size: var(--text-small);
  color: var(--text-secondary);
  padding-left: var(--space-4);
  position: relative;
}

.card__list-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--accent);
  opacity: 0.5;
}

/* ── Portfolio Cards ── */
.portfolio-card {
  position: relative;
  display: block;
  text-decoration: none;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  cursor: pointer;
}

.portfolio-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-emphasis) var(--ease-out);
}

.portfolio-card:hover .portfolio-card__image {
  transform: scale(1.04);
}

.portfolio-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(10, 22, 40, 0.9) 0%,
    rgba(10, 22, 40, 0.3) 50%,
    transparent 100%
  );
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-8);
  transition: background var(--duration-standard) var(--ease-out);
}

.portfolio-card:hover .portfolio-card__overlay {
  background: linear-gradient(
    to top,
    rgba(10, 22, 40, 0.95) 0%,
    rgba(10, 22, 40, 0.5) 50%,
    rgba(10, 22, 40, 0.1) 100%
  );
}

.portfolio-card__tag {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  color: var(--accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}

.portfolio-card__title {
  font-size: var(--text-h3);
  font-weight: var(--weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--space-2);
}

.portfolio-card__desc {
  font-size: var(--text-small);
  color: var(--text-secondary);
  max-width: 400px;
}

/* ── Form Elements ── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-small);
  font-weight: var(--weight-medium);
  color: var(--text-secondary);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  font-size: var(--text-body);
  color: var(--text-primary);
  transition: border-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
  min-height: 44px;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 229, 199, 0.15);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-navy-600);
}

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

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%239CA3AF' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-right: var(--space-10);
}

.contact__form .btn {
  align-self: flex-start;
  margin-top: var(--space-4);
}

.contact__form-row + .form-group {
  margin-top: 0;
}

/* ── Footer ── */
.footer {
  background: var(--surface-elevated);
  border-top: 1px solid var(--border-subtle);
  padding-block: var(--space-16);
}

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

@media (min-width: 768px) {
  .footer__grid {
    grid-template-columns: 2fr repeat(3, 1fr);
  }
}

.footer__brand {
  max-width: 320px;
}

.footer__wordmark {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: var(--weight-bold);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

.footer__tagline {
  font-size: var(--text-small);
  color: var(--text-secondary);
  font-style: italic;
  margin-bottom: var(--space-6);
}

.footer__desc {
  font-size: var(--text-small);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.footer__heading {
  font-size: var(--text-small);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-4);
}

.footer__link {
  display: block;
  font-size: var(--text-small);
  color: var(--text-secondary);
  padding: var(--space-1) 0;
  transition: color var(--duration-fast) var(--ease-out);
}

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

.footer__bottom {
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-4);
}

.footer__copy {
  font-size: var(--text-caption);
  color: var(--text-secondary);
}

.footer__legal {
  display: flex;
  gap: var(--space-6);
}

.footer__legal a {
  font-size: var(--text-caption);
  color: var(--text-secondary);
  transition: color var(--duration-fast) var(--ease-out);
}

.footer__legal a:hover {
  color: var(--accent);
}