/* ============================================================
   COMPONENTS — VaultMind
   Private banking aesthetic: restrained luxury, gold accents sparse
   ============================================================ */

/* ============================================================
   HEADER
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: oklch(from var(--color-bg) l c h / 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.header--hidden { transform: translateY(-100%); }
.header--scrolled { border-bottom-color: var(--color-divider); }

.header__inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}
.logo-mark { color: var(--color-primary); }
.logo-text {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  letter-spacing: 0.04em;
}

.header__nav { display: flex; align-items: center; }
.nav-list {
  display: flex;
  gap: var(--space-8);
  list-style: none;
  padding: 0;
  margin: 0;
}
.nav-link {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: color var(--transition-interactive);
}
.nav-link:hover { color: var(--color-text); }

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.lang-toggle {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color var(--transition-interactive), border-color var(--transition-interactive);
  font-family: var(--font-body);
  background: transparent;
}
.lang-toggle:hover { color: var(--color-text); border-color: var(--color-primary); }

.theme-toggle {
  color: var(--color-text-muted);
  padding: var(--space-1);
  display: flex;
  align-items: center;
  transition: color var(--transition-interactive);
}
.theme-toggle:hover { color: var(--color-primary); }

/* Mobile menu button */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  cursor: pointer;
}
.hamburger-line {
  width: 20px;
  height: 1.5px;
  background: var(--color-text);
  transition: transform 0.3s ease, opacity 0.3s ease;
  display: block;
}
.mobile-menu-btn[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.mobile-menu-btn[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}
.mobile-menu-btn[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile overlay */
.mobile-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 90;
  background: oklch(from var(--color-bg) l c h / 0.95);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.mobile-overlay.active { opacity: 1; pointer-events: auto; }

.mobile-nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}
.mobile-nav-link {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: color var(--transition-interactive);
}
.mobile-nav-link:hover { color: var(--color-primary); }

@media (max-width: 768px) {
  .header__nav { display: none; }
  .mobile-menu-btn { display: flex; }
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.3;
}
.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: var(--space-8);
  max-width: 800px;
}
.hero__logo-large {
  margin-bottom: var(--space-8);
  display: flex;
  justify-content: center;
}
.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 300;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  letter-spacing: 0.06em;
}
.hero__subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-bottom: var(--space-10);
  letter-spacing: 0.02em;
  line-height: 1.7;
}
.hero__cta { display: flex; justify-content: center; }

.hero__scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}
.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--color-primary), transparent);
  animation: scroll-pulse 2s ease-in-out infinite;
}
@keyframes scroll-pulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.8; }
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn-primary-lg {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-8);
  background: transparent;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition-interactive),
              color var(--transition-interactive),
              transform var(--transition-interactive);
}
.btn-primary-lg:hover {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  transform: translateY(-1px);
}
.btn-primary-lg:active { transform: translateY(0); }

/* ============================================================
   SECTIONS
   ============================================================ */
.section--padded {
  padding: clamp(var(--space-16), 8vw, var(--space-32)) 0;
}
.section--alt {
  background: var(--color-surface);
}
.section__container {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: 0 var(--space-6);
}
.section__container--narrow {
  max-width: var(--content-default);
}
.section__header {
  text-align: center;
  margin-bottom: clamp(var(--space-10), 5vw, var(--space-16));
}
.section__label {
  display: inline-block;
  font-size: var(--text-xs);
  color: var(--color-primary);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
  font-family: var(--font-body);
}
.gold-line {
  width: 40px;
  height: 1px;
  background: var(--color-primary);
  margin: var(--space-4) auto;
  opacity: 0.5;
}
.section__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--color-text);
  letter-spacing: 0.04em;
}

/* ============================================================
   VALUE CARDS
   ============================================================ */
.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}
@media (max-width: 768px) {
  .value-grid { grid-template-columns: 1fr; gap: var(--space-6); }
}
.value-card {
  padding: var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-interactive);
}
.section--alt .value-card { background: var(--color-surface-2); }
.value-card:hover { border-color: var(--color-border); }
.value-card__icon {
  margin-bottom: var(--space-6);
}
.value-card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  letter-spacing: 0.02em;
}
.value-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ============================================================
   HOW IT WORKS — STEPS
   ============================================================ */
.steps {
  display: flex;
  gap: var(--space-8);
  position: relative;
}
@media (max-width: 768px) {
  .steps { flex-direction: column; gap: var(--space-6); }
}
.step {
  flex: 1;
  position: relative;
  padding: var(--space-8);
  background: var(--color-surface-2);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
}
.step__number {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 300;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
  opacity: 0.7;
}
.step__connector {
  display: none;
}
@media (min-width: 769px) {
  .step__connector {
    display: block;
    position: absolute;
    top: 50%;
    right: calc(-1 * var(--space-4));
    width: var(--space-8);
    height: 1px;
    background: var(--color-divider);
  }
  .step:last-child .step__connector { display: none; }
}
.step__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}
.step__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ============================================================
   CAPABILITIES GRID
   ============================================================ */
.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
@media (max-width: 768px) {
  .capabilities-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-4); }
}
@media (max-width: 480px) {
  .capabilities-grid { grid-template-columns: 1fr; }
}
.capability {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-interactive);
}
.capability:hover { border-color: var(--color-border); }
.capability__icon { flex-shrink: 0; }
.capability__title {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  letter-spacing: 0.02em;
}

/* ============================================================
   SECURITY LIST
   ============================================================ */
.security-list {
  max-width: var(--content-default);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}
.security-item {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  padding: var(--space-5) var(--space-6);
  background: var(--color-surface-2);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
}
.security-item__icon { flex-shrink: 0; }
.security-item__text {
  font-size: var(--text-base);
  color: var(--color-text);
  letter-spacing: 0.01em;
}

/* ============================================================
   ABOUT / FOUNDERS
   ============================================================ */
.about-content {
  max-width: var(--content-default);
  margin: 0 auto;
}
.about-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.8;
  text-align: center;
  margin-bottom: var(--space-12);
}
.founders {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
}
@media (max-width: 640px) {
  .founders { grid-template-columns: 1fr; }
}
.founder {
  display: flex;
  align-items: flex-start;
  gap: var(--space-5);
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
}
.founder__avatar {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.founder__initials {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  color: var(--color-primary);
  letter-spacing: 0.05em;
}
.founder__name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}
.founder__role {
  font-size: var(--text-xs);
  color: var(--color-primary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}
.founder__bio {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact-content {
  text-align: center;
}
.contact-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-6);
  max-width: 72ch;
  margin-left: auto;
  margin-right: auto;
}
.contact-email {
  margin-bottom: var(--space-8);
}
.contact-email a {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--color-divider);
  padding-bottom: var(--space-1);
  transition: border-color var(--transition-interactive), color var(--transition-interactive);
}
.contact-email a:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  padding: var(--space-8) var(--space-6);
  border-top: 1px solid var(--color-divider);
}
.footer__inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
@media (max-width: 640px) {
  .footer__inner {
    flex-direction: column;
    gap: var(--space-3);
    text-align: center;
  }
}
.footer__copyright {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.footer__attribution a {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-decoration: none;
  transition: color var(--transition-interactive);
}
.footer__attribution a:hover { color: var(--color-text-muted); }

/* ============================================================
   SCROLL ANIMATIONS — opacity only (no translateY, no CLS)
   JS IntersectionObserver handles reveal. Class .is-visible added by app.js.
   ============================================================ */
.fade-in {
  opacity: 0;
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.fade-in.is-visible {
  opacity: 1;
}

/* If JS fails, show everything */
@media (prefers-reduced-motion: reduce) {
  .fade-in { opacity: 1; }
}