.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  padding-block: var(--space-4);
  display: flex;
  align-items: center;
  transition:
    top var(--transition-base),
    width var(--transition-base),
    transform var(--transition-base),
    padding var(--transition-base),
    background-color var(--transition-base),
    backdrop-filter var(--transition-base),
    border-color var(--transition-base),
    border-radius var(--transition-base),
    box-shadow var(--transition-base);
  border-bottom: 1px solid transparent;
}

.header .container {
  width: min(100% - 2.5rem, var(--container-max));
  margin-inline: auto;
  transition: padding var(--transition-base);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  width: 100%;
}

.header:not(.header--scrolled) {
  background-color: var(--color-background);
}

.header--scrolled {
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: min(calc(100% - 2rem), 1200px);
  padding-block: var(--space-2);
  border-radius: 100px;
  background-color: var(--color-surface-overlay);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border: 1px solid var(--color-border-strong);
  box-shadow: 0 12px 36px -8px rgba(15, 23, 42, 0.14), 0 4px 12px -2px rgba(15, 23, 42, 0.08);
}

.header--scrolled .container {
  width: 100%;
  max-width: 100%;
  padding-inline: var(--space-6);
}

/* ── Logo ── */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
  position: relative;
}

.logo__img {
  height: 52px;
  width: auto;
  flex-shrink: 0;
  object-fit: contain;
  transition: opacity var(--transition-base) ease;
}

/* Absolute position one of them so they stack exactly on top of each other */
.logo__img--dark {
  position: absolute;
  left: 0;
  top: 0;
}

/* Light Theme (Default) */
[data-theme="light"] .logo__img--dark,
:root:not([data-theme="dark"]) .logo__img--dark {
  opacity: 0;
  pointer-events: none;
}
[data-theme="light"] .logo__img--light,
:root:not([data-theme="dark"]) .logo__img--light {
  opacity: 1;
}

/* Dark Theme */
[data-theme="dark"] .logo__img--light {
  opacity: 0;
  pointer-events: none;
}
[data-theme="dark"] .logo__img--dark {
  opacity: 1;
}

.logo__wordmark {
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: var(--weight-extrabold);
  color: var(--color-text);
  line-height: 1;
  transition: color var(--transition-base);
}

.logo__sub {
  display: block;
  font-size: 0.6em;
  font-weight: var(--weight-medium);
  letter-spacing: 0.05em;
  opacity: 0.75;
  margin-top: 1px;
}

/* ── Nav ── */
.nav {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav__link {
  position: relative;
  font-size: clamp(0.75rem, 0.7rem + 0.25vw, 0.8125rem);
  font-weight: var(--weight-semibold);
  color: var(--color-text-secondary);
  padding: 0.4rem 0.65rem;
  border-radius: var(--radius-full);
  transition: color var(--transition-fast), background-color var(--transition-fast);
  white-space: nowrap;
}

.nav__link:hover {
  color: var(--color-secondary);
  background: var(--color-background-alt);
}

/* ── Header actions ── */
.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* ── Theme Toggle ── */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  color: var(--color-text-secondary);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  flex-shrink: 0;
}

.theme-toggle:hover {
  color: var(--color-secondary);
  border-color: var(--color-secondary);
  background: var(--color-background-alt);
}

.header--scrolled .theme-toggle {
  color: var(--color-text-secondary);
  background: var(--color-background-alt);
  border-color: var(--color-border);
}

.header--scrolled .theme-toggle:hover {
  color: var(--color-text);
  border-color: var(--color-border-strong);
}

.theme-toggle__icon {
  width: 18px;
  height: 18px;
}

/* Toggle icon display based on data-theme attribute */
[data-theme="dark"] [data-icon-moon],
:root:not([data-theme="dark"]) [data-icon-sun] {
  display: none !important;
}

[data-theme="dark"] [data-icon-sun],
:root:not([data-theme="dark"]) [data-icon-moon] {
  display: block !important;
}

/* ── Hamburger ── */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  transition: background var(--transition-fast);
}

.hamburger__line {
  width: 18px;
  height: 1.5px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.hamburger[aria-expanded="true"] .hamburger__line:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.hamburger[aria-expanded="true"] .hamburger__line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.hamburger[aria-expanded="true"] .hamburger__line:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ── Mobile Nav Backdrop ── */
.mobile-nav-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: calc(var(--z-header) - 2);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

body.menu-open .mobile-nav-backdrop {
  opacity: 1;
  pointer-events: auto;
}

/* ── Mobile Nav ── */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: 420px;
  z-index: calc(var(--z-header) - 1);
  background: var(--color-surface);
  padding: calc(var(--header-height, 72px) + var(--space-4)) var(--space-6) var(--space-6);
  flex-direction: column;
  justify-content: space-between;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform var(--transition-slow) cubic-bezier(0.16, 1, 0.3, 1), box-shadow var(--transition-slow);
  box-shadow: -8px 0 32px rgba(0, 0, 0, 0.2);
  border-left: 1px solid var(--color-border);
}

.mobile-nav.is-open {
  transform: translateX(0);
}

.mobile-nav__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

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

.mobile-nav__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.95rem 1.25rem;
  font-size: var(--text-md);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  background: transparent;
  text-decoration: none;
  position: relative;
  transition: all var(--transition-fast);
}

.mobile-nav__link-icon {
  width: 18px;
  height: 18px;
  opacity: 0.35;
  transform: translateX(0);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
  color: currentColor;
}

.mobile-nav__link:hover,
.mobile-nav__link:focus-visible {
  background: var(--color-background-alt);
  color: var(--color-secondary);
  border-color: var(--color-border-subtle);
  transform: translateX(3px);
}

.mobile-nav__link:hover .mobile-nav__link-icon,
.mobile-nav__link:focus-visible .mobile-nav__link-icon {
  opacity: 1;
  transform: translateX(3px);
}

/* Active State */
.mobile-nav__link.active {
  background: rgba(37, 99, 235, 0.08);
  color: var(--color-secondary);
  border-color: rgba(37, 99, 235, 0.18);
  font-weight: var(--weight-bold);
}

.mobile-nav__link.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 18%;
  bottom: 18%;
  width: 4px;
  background: var(--color-secondary);
  border-radius: 0 4px 4px 0;
}

[data-theme="dark"] .mobile-nav__link.active {
  background: rgba(56, 189, 248, 0.12);
  color: #38bdf8;
  border-color: rgba(56, 189, 248, 0.25);
}

[data-theme="dark"] .mobile-nav__link.active::before {
  background: #38bdf8;
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.5);
}

.mobile-nav__link.active .mobile-nav__link-icon {
  opacity: 1;
  color: var(--color-secondary);
}

[data-theme="dark"] .mobile-nav__link.active .mobile-nav__link-icon {
  color: #38bdf8;
}

/* Quick Assistance Card */
.mobile-nav__help-card {
  padding: var(--space-4) var(--space-5);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.mobile-nav__help-badge {
  display: inline-flex;
  align-items: center;
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-secondary);
}

.mobile-nav__help-text {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: var(--leading-normal);
  margin: 0;
}

.mobile-nav__help-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-1);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border-subtle);
}

.mobile-nav__help-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.mobile-nav__help-link svg {
  width: 15px;
  height: 15px;
  color: var(--color-secondary);
  flex-shrink: 0;
}

.mobile-nav__help-link:hover {
  color: var(--color-secondary);
}

/* Mobile Nav Footer */
.mobile-nav__footer {
  margin-top: auto;
  padding-top: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  border-top: 1px solid var(--color-border-subtle);
}

.btn--full {
  width: 100%;
}


/* ══════════════════════════════════════
   BUTTONS
══════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  line-height: 1;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  border: 1.5px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast),
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
  text-decoration: none;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

/* Primary */
.btn--primary {
  background: var(--gradient-secondary);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 16px rgba(78,82,224,0.35);
}

.btn--primary:hover {
  box-shadow: 0 8px 24px rgba(78,82,224,0.45);
}

/* Secondary */
.btn--secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-xs);
}

.btn--secondary:hover {
  background: var(--color-background-alt);
  border-color: var(--color-secondary);
  color: var(--color-secondary);
}

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

.btn--outline:hover {
  background: var(--color-secondary);
  color: #fff;
}

/* Ghost (dark bg) */
.btn--ghost {
  background: rgba(255,255,255,0.08);
  color: #fff;
  border-color: rgba(255,255,255,0.15);
}

.btn--ghost:hover {
  background: rgba(255,255,255,0.14);
}

/* CTA */
.btn--cta {
  font-size: var(--text-md);
  padding: 1rem 2rem;
}

/* Small */
.btn--sm {
  font-size: var(--text-xs);
  padding: 0.5rem 1rem;
}

/* Arrow icon inside button */
.btn .btn__arrow {
  transition: transform var(--transition-fast);
}

.btn:hover .btn__arrow {
  transform: translateX(4px);
}

/* Header CTA */
.btn--header {
  font-size: var(--text-xs);
  padding: 0.55rem 1.2rem;
  background: var(--gradient-secondary);
  color: #fff;
  box-shadow: 0 2px 12px rgba(78,82,224,0.4);
}

.btn--header:hover {
  box-shadow: 0 4px 16px rgba(78,82,224,0.5);
}

/* ══════════════════════════════════════
   CARDS
══════════════════════════════════════ */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border-strong);
}

.card--glass {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.12);
}

.card--gradient {
  background: var(--gradient-card);
  border-color: var(--color-border-subtle);
}

/* ══════════════════════════════════════
   BADGE / PILL
══════════════════════════════════════ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
}

.badge--success {
  background: rgba(16, 185, 129, 0.12);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.badge--info {
  background: rgba(34, 211, 238, 0.12);
  color: var(--color-accent);
  border: 1px solid rgba(34, 211, 238, 0.25);
}

.badge--indigo {
  background: rgba(78, 82, 224, 0.12);
  color: var(--color-secondary);
  border: 1px solid rgba(78, 82, 224, 0.25);
}

.badge--dot::before {
  content: '';
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

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

.form-label {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
}

.form-input,
.form-select,
.form-textarea {
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  width: 100%;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(78,82,224,0.12);
}

.form-textarea {
  resize: vertical;
  min-height: 130px;
}

.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='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  padding-right: 2.5rem;
}

/* ══════════════════════════════════════
   AVATAR
══════════════════════════════════════ */
.avatar {
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  color: #fff;
}

.avatar--sm { width: 32px; height: 32px; font-size: var(--text-xs); }
.avatar--md { width: 44px; height: 44px; font-size: var(--text-sm); }
.avatar--lg { width: 56px; height: 56px; font-size: var(--text-base); }
.avatar--xl { width: 72px; height: 72px; font-size: var(--text-lg); }

/* ══════════════════════════════════════
   DIVIDER
══════════════════════════════════════ */
.divider {
  width: 48px;
  height: 3px;
  border-radius: var(--radius-full);
  background: var(--gradient-accent);
  margin-block: var(--space-4);
}

/* ══════════════════════════════════════
   ICON BOX
══════════════════════════════════════ */
.icon-box {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(78, 82, 224, 0.1);
  color: var(--color-secondary);
  flex-shrink: 0;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.icon-box--cyan {
  background: rgba(34, 211, 238, 0.1);
  color: var(--color-accent);
}

.icon-box--lg {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-lg);
}

.icon-box svg {
  width: 22px;
  height: 22px;
}

.icon-box--lg svg {
  width: 28px;
  height: 28px;
}

.tabs {
  display: flex;
  gap: var(--space-2);
  background: var(--color-background-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 4px;
  width: fit-content;
}

.tabs__btn {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  background: transparent;
  transition: background var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}

.tabs__btn.is-active {
  background: var(--gradient-secondary);
  color: #fff;
  box-shadow: 0 2px 12px rgba(37, 99, 235, 0.3);
}

[data-tab-panel] { display: none; }
[data-tab-panel].is-active { display: block; }

.stars {
  display: flex;
  gap: 2px;
  color: #f59e0b;
}

.stars svg {
  width: 16px;
  height: 16px;
}