/* ==========================================================================
   Components — nav, buttons, cards, forms, accordion, footer
   ========================================================================== */

/* ---- Navigation ---- */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background: color-mix(in srgb, var(--color-bg) 80%, transparent);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration-base) ease, background-color var(--duration-base) ease;
}

.nav.is-scrolled {
  border-bottom-color: var(--color-border);
}

/* The home page opens on the permanently-dark hero "cosmic" band (see
   .hero in sections.css) — while it's still in view (before the visitor
   scrolls, i.e. no .is-scrolled yet), force the nav to a dark reading
   regardless of the site's light/dark toggle, so it doesn't float as a
   pale bar over a black background. :has() scopes this to pages that
   actually contain a .hero (only index.html), so other pages are
   unaffected. Reverts to normal theme-following colors once scrolled. */
body:has(.hero) .nav:not(.is-scrolled) {
  background: rgba(11, 11, 12, 0.75);
}

body:has(.hero) .nav:not(.is-scrolled) .nav__brand {
  color: #f5f5f7;
}

body:has(.hero) .nav:not(.is-scrolled) .nav__burger span {
  background: #f5f5f7;
}

body:has(.hero) .nav:not(.is-scrolled) .nav__links a {
  color: #a1a1a6;
}

body:has(.hero) .nav:not(.is-scrolled) .nav__links a:hover,
body:has(.hero) .nav:not(.is-scrolled) .nav__links a.is-active {
  color: #fff;
}

body:has(.hero) .nav:not(.is-scrolled) .lang-switch,
body:has(.hero) .nav:not(.is-scrolled) .theme-toggle {
  border-color: rgba(255, 255, 255, 0.24);
  color: #f5f5f7;
}

body:has(.hero) .nav:not(.is-scrolled) .lang-switch button {
  color: #a1a1a6;
}

body:has(.hero) .nav:not(.is-scrolled) .lang-switch button:hover {
  color: #fff;
}

.nav__inner {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.0625rem;
  letter-spacing: var(--tracking-tight);
  white-space: nowrap;
  flex-shrink: 0;
}

.nav__brand img {
  height: 26px;
  width: auto;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.nav__links a {
  font-size: var(--fs-small);
  color: var(--color-text-muted);
  transition: color var(--duration-fast) ease;
  position: relative;
}

.nav__links a:hover,
.nav__links a.is-active {
  color: var(--color-text);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav__toggle {
  display: none;
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  transition: transform var(--duration-fast) ease, border-color var(--duration-fast) ease;
}

/* ---- Language switcher ---- */

.lang-switch {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
}

.lang-switch button {
  padding: 0.3rem 0.55rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-text-muted);
  transition: background-color var(--duration-fast) ease, color var(--duration-fast) ease;
}

.lang-switch button:hover {
  color: var(--color-text);
}

.lang-switch button.is-active {
  background: var(--color-accent);
  color: var(--color-accent-contrast);
}

.theme-toggle:hover {
  transform: scale(1.06);
}

.theme-toggle:active {
  transform: scale(0.94);
}

.theme-toggle svg {
  width: 16px;
  height: 16px;
}

.theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

.nav__burger {
  display: none;
  flex-direction: column;
  gap: 4px;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
}

.nav__burger span {
  width: 18px;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--duration-fast) ease, opacity var(--duration-fast) ease;
}

/* ---- Buttons ---- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-pill);
  font-size: var(--fs-small);
  font-weight: 600;
  white-space: nowrap;
  transition: transform var(--duration-fast) ease, background-color var(--duration-fast) ease, border-color var(--duration-fast) ease;
  min-height: 44px;
}

.btn:active {
  transform: scale(0.96);
}

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

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

.btn-ghost {
  background: transparent;
  border: 1px solid var(--color-border-strong);
  color: var(--color-text);
}

.btn-ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.section-dark .btn-ghost {
  border-color: rgba(255, 255, 255, 0.24);
  color: #fff;
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.0625rem;
  font-weight: 300;
}

.btn-block {
  width: 100%;
}

/* ---- Cards (used sparingly: pricing + FAQ) ---- */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-soft);
}

/* ---- Chips / badges ---- */

.chip {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  color: var(--color-text-muted);
}

/* ---- Forms ---- */

.field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: var(--space-3);
}

.field label {
  font-size: var(--fs-small);
  font-weight: 600;
}

.field .hint {
  font-size: var(--fs-micro);
  color: var(--color-text-muted);
}

.field input,
.field select,
.field textarea {
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  font-size: var(--fs-body);
  color: var(--color-text);
  transition: border-color var(--duration-fast) ease, box-shadow var(--duration-fast) ease;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-accent) 25%, transparent);
}

.field textarea {
  resize: vertical;
  min-height: 140px;
}

.field-error {
  font-size: var(--fs-micro);
  color: #ef4444;
  display: none;
}

.field.has-error input,
.field.has-error textarea,
.field.has-error select {
  border-color: #ef4444;
}

.field.has-error .field-error {
  display: block;
}

.radio-grid,
.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.75rem;
}

.option-pill {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-pill);
  cursor: pointer;
  font-size: var(--fs-small);
  transition: border-color var(--duration-fast) ease, background-color var(--duration-fast) ease;
}

.option-pill:has(input:checked) {
  border-color: var(--color-accent);
  background: color-mix(in srgb, var(--color-accent) 8%, transparent);
}

.option-pill input {
  accent-color: var(--color-accent);
}

.form-status {
  margin-top: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--fs-small);
  display: none;
}

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

.form-status.is-success {
  background: color-mix(in srgb, #22c55e 12%, transparent);
  color: #16a34a;
}

.form-status.is-error {
  background: color-mix(in srgb, #ef4444 12%, transparent);
  color: #dc2626;
}

/* ---- Accordion (FAQ) ---- */

.accordion-item {
  border-bottom: 1px solid var(--color-border);
}

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  text-align: left;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.0625rem;
}

.accordion-trigger .chevron {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  transition: transform var(--duration-base) var(--ease-spring);
}

.accordion-item.is-open .accordion-trigger .chevron {
  transform: rotate(180deg);
}

.accordion-panel {
  overflow: hidden;
  max-height: 0;
  transition: max-height var(--duration-base) var(--ease-spring);
}

.accordion-panel p {
  padding-bottom: var(--space-3);
  color: var(--color-text-muted);
  max-width: 65ch;
}

/* ---- Footer ---- */

.footer {
  background: var(--color-bg-alt);
  color: var(--color-text-muted);
  padding-block: var(--space-5);
}

.footer__top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.footer__brand {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--color-text);
}

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-2);
  padding-top: var(--space-3);
  font-size: var(--fs-micro);
}

.footer__legal {
  display: flex;
  gap: var(--space-3);
}

.social-links {
  display: flex;
  gap: var(--space-2);
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  transition: border-color var(--duration-fast) ease, color var(--duration-fast) ease;
}

.social-links a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.social-links svg {
  width: 16px;
  height: 16px;
}

/* ---- Project gallery lightbox ---- */
.gallery-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

.gallery-modal[hidden] {
  display: none;
}

.gallery-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(11, 11, 12, 0.85);
}

.gallery-modal__dialog {
  position: relative;
  z-index: 1;
  width: min(920px, 100%);
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

.gallery-modal__frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  background: #18181a;
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.gallery-modal__image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #0b0b0c;
}

.gallery-modal__empty {
  color: #a1a1a6;
  font-size: var(--fs-body);
  padding: var(--space-4);
  text-align: center;
}

.gallery-modal__close {
  position: absolute;
  top: -44px;
  right: 0;
  background: none;
  border: none;
  color: #f5f5f7;
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
}

.gallery-modal__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.24);
  background: rgba(11, 11, 12, 0.6);
  color: #f5f5f7;
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.gallery-modal__nav--prev {
  left: var(--space-3);
}

.gallery-modal__nav--next {
  right: var(--space-3);
}

.gallery-modal__counter {
  color: #a1a1a6;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
}

.gallery-modal__nav[hidden],
.gallery-modal__counter[hidden],
.gallery-modal__image[hidden] {
  display: none;
}