/* ==========================================================================
   Components — buttons, badges, header, footer, cards, forms
   ========================================================================== */

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.85rem 1.5rem;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--fs-base);
  line-height: 1;
  border-radius: var(--radius-full);
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur) var(--ease-out),
    background var(--dur) var(--ease-out), color var(--dur) var(--ease-out);
  white-space: nowrap;
}
.btn:active {
  transform: translateY(1px) scale(0.99);
}
.btn svg {
  width: 1.1em;
  height: 1.1em;
}

.btn--primary {
  background: var(--gradient-brand);
  color: var(--white);
  box-shadow: 0 8px 20px rgba(109, 94, 246, 0.28);
}
.btn--primary:hover {
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn--ghost:hover {
  border-color: var(--brand-violet);
  color: var(--brand-violet-600);
  background: var(--gradient-brand-soft);
}

.btn--light {
  background: var(--white);
  color: var(--ink-950);
}
.btn--light:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn--on-dark {
  border: 1px solid var(--dark-border);
  color: var(--dark-text);
}
.btn--on-dark:hover {
  background: rgba(255, 255, 255, 0.08);
}

.btn--lg {
  padding: 1.05rem 2rem;
  font-size: var(--fs-md);
}
.btn--block {
  width: 100%;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 500;
  color: var(--brand-violet-600);
}
.link-arrow svg {
  width: 1em;
  height: 1em;
  transition: transform var(--dur) var(--ease-out);
}
.link-arrow:hover svg {
  transform: translateX(4px);
}

/* ---- Badges / pills ---- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.35rem 0.75rem;
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.02em;
  border-radius: var(--radius-full);
  background: var(--gradient-brand-soft);
  color: var(--brand-violet-600);
  border: 1px solid rgba(109, 94, 246, 0.2);
}
.badge--dot::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand-emerald);
  box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.25);
}

.tag {
  display: inline-block;
  padding: 0.3rem 0.7rem;
  font-size: var(--fs-xs);
  font-weight: 500;
  border-radius: var(--radius-full);
  background: var(--ink-100);
  color: var(--ink-500);
}

/* ==========================================================================
   Header / navigation
   ========================================================================== */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  transition: background var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out),
    border-color var(--dur) var(--ease-out);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--fs-md);
  letter-spacing: -0.02em;
  color: var(--white);
}
.brand__mark {
  width: 34px;
  height: 34px;
  flex: none;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.nav__link {
  position: relative;
  padding: 0.5rem 0.9rem;
  font-weight: 500;
  font-size: var(--fs-sm);
  color: rgba(255, 255, 255, 0.72);
  border-radius: var(--radius-full);
  transition: color var(--dur) var(--ease-out), background var(--dur) var(--ease-out);
}
.nav__link:hover,
.nav__link[aria-current="page"] {
  color: var(--white);
  background: rgba(255, 255, 255, 0.12);
}

/* When the header turns into the white glass bar on scroll, flip to dark text */
.site-header.is-scrolled .brand {
  color: var(--text);
}
.site-header.is-scrolled .nav__link {
  color: var(--text-muted);
}
.site-header.is-scrolled .nav__link:hover,
.site-header.is-scrolled .nav__link[aria-current="page"] {
  color: var(--text);
  background: var(--ink-50);
}
.site-header.is-scrolled .nav-toggle span,
.site-header.is-scrolled .nav-toggle span::before,
.site-header.is-scrolled .nav-toggle span::after {
  background: var(--text);
}

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

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  display: block;
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: var(--white);
  transition: transform var(--dur) var(--ease-out), opacity var(--dur) var(--ease-out);
}
.nav-toggle span::before {
  transform: translateY(-7px);
}
.nav-toggle span::after {
  transform: translateY(5px);
}
body.nav-open .nav-toggle span {
  background: transparent;
}
body.nav-open .nav-toggle span::before {
  transform: rotate(45deg);
}
body.nav-open .nav-toggle span::after {
  transform: rotate(-45deg) translateY(-2px);
}

@media (max-width: 900px) {
  .nav-toggle {
    display: inline-flex;
  }
  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-1);
    padding: var(--space-5);
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--dur) var(--ease-out), transform var(--dur) var(--ease-out),
      visibility var(--dur);
  }
  body.nav-open .nav {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .nav__link {
    padding: var(--space-3) var(--space-4);
    font-size: var(--fs-md);
    color: var(--text-muted);
  }
  .nav__link:hover,
  .nav__link[aria-current="page"] {
    color: var(--text);
    background: var(--ink-50);
  }
  .header-cta {
    display: none;
  }
}

/* ==========================================================================
   Cards
   ========================================================================== */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out),
    border-color var(--dur) var(--ease-out);
}
.card--hover:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.icon-badge {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-md);
  background: var(--gradient-brand-soft);
  color: var(--brand-violet-600);
  margin-bottom: var(--space-5);
}
.icon-badge svg {
  width: 26px;
  height: 26px;
}

/* ==========================================================================
   Forms
   ========================================================================== */
.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.field label {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text);
}
.field input,
.field textarea,
.field select {
  padding: 0.85rem 1rem;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out),
    background var(--dur) var(--ease-out);
}
.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  background: var(--white);
  border-color: var(--brand-violet);
  box-shadow: 0 0 0 4px rgba(109, 94, 246, 0.14);
}
.field textarea {
  min-height: 140px;
  resize: vertical;
}

.form-note {
  font-size: var(--fs-sm);
  color: var(--text-muted);
}
.form-status {
  padding: var(--space-4);
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
  font-weight: 500;
}
.form-status.is-success {
  background: rgba(52, 211, 153, 0.12);
  color: #0f7a55;
  border: 1px solid rgba(52, 211, 153, 0.3);
}
.form-status.is-error {
  background: rgba(220, 38, 38, 0.1);
  color: #b3261e;
  border: 1px solid rgba(220, 38, 38, 0.28);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--dark-bg);
  color: var(--dark-text-muted);
  padding-block: var(--space-8) var(--space-6);
  position: relative;
  overflow: hidden;
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(700px 300px at 12% 0%, rgba(109, 94, 246, 0.22), transparent 60%);
  pointer-events: none;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: var(--space-6);
  position: relative;
  z-index: 1;
}
.footer-brand .brand {
  color: var(--white);
  margin-bottom: var(--space-4);
}
.footer-brand p {
  color: var(--dark-text-muted);
  max-width: 32ch;
  margin-bottom: var(--space-5);
}
.footer-col h4 {
  color: var(--white);
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-4);
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.footer-col a {
  color: var(--dark-text-muted);
  font-size: var(--fs-sm);
  transition: color var(--dur) var(--ease-out);
}
.footer-col a:hover {
  color: var(--white);
}
.social-row {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-2);
}
.social-row a {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--dark-border);
  color: var(--dark-text);
  transition: background var(--dur) var(--ease-out), transform var(--dur) var(--ease-out);
}
.social-row a:hover {
  background: var(--gradient-brand);
  transform: translateY(-2px);
  border-color: transparent;
}
.social-row svg {
  width: 18px;
  height: 18px;
}
.footer-bottom {
  position: relative;
  z-index: 1;
  margin-top: var(--space-7);
  padding-top: var(--space-5);
  border-top: 1px solid var(--dark-border);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-size: var(--fs-sm);
}

@media (max-width: 820px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
}
@media (max-width: 520px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}