/* ===================================================
   TaskMasters — Navbar v2
   Cream-tinted, lightly blurred, sticky
   Follows DESIGN.md: "The Quiet Ledger"
   =================================================== */

/* ── Global nav-height token shared with drawer ── */
:root {
  --tm-nav-h: 88px; /* 25px padding-top + 38px logo + 25px padding-bottom */
}

.tm-nav {
  /* Nav sizing */
  --nav-h:      var(--tm-nav-h);
  --nav-px:     clamp(16px, 3.5vw, 56px);
  --nav-logo-h: 38px;

  /* Layout — height driven by container padding, never fixed here */
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;

  /* Appearance: cream-tinted, lightly blurred (per DESIGN.md) */
  background: rgba(250, 250, 245, 0.88);
  backdrop-filter: blur(14px) saturate(1.3);
  -webkit-backdrop-filter: blur(14px) saturate(1.3);
  border-bottom: 1px solid transparent;
  box-shadow: none;

  /* Type */
  font-family: var(--tm-font-body);

  /* Only transition appearance properties — never height (can't animate to auto) */
  transition:
    border-bottom-color 240ms ease,
    background-color    240ms ease,
    box-shadow          280ms ease;
}

/* Scrolled: glassmorphism layer */
.tm-nav.is-scrolled {
  background: rgba(250, 250, 245, 0.55);
  backdrop-filter: blur(28px) saturate(2) brightness(1.04);
  -webkit-backdrop-filter: blur(28px) saturate(2) brightness(1.04);
  border-bottom-color: rgba(255, 255, 255, 0.35);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.55),
    0 8px 32px rgba(10, 31, 61, 0.07);
}

/* ── Skip link (accessibility) ── */
.tm-nav__skip {
  position: absolute;
  top: -100%;
  left: 12px;
  background: var(--tm-navy);
  color: var(--tm-cream);
  padding: 8px 18px;
  border-radius: 0 0 8px 8px;
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  z-index: 2000;
  transition: top 200ms ease;
}
.tm-nav__skip:focus {
  top: 0;
}

/* ── Container ── */
.tm-nav__container {
  display: flex;
  align-items: center;
  height: auto;
  max-width: 1440px;
  margin: 0 auto;
  padding: 25px var(--nav-px);
  gap: 16px;
  width: 100%;
  overflow: visible;
}

/* ── Logo ── */
.tm-nav__logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
  position: relative;
  overflow: visible;
}

/* Small (scrolled) logo — in normal flow, always drives layout width */
.tm-nav__logo-img--small {
  height: var(--nav-logo-h);
  width: auto;
  display: block;
  opacity: 0;
  transition: opacity 320ms ease;
}

/* Large (initial) logo — absolutely centred, intentionally overflows nav */
.tm-nav__logo-img--large {
  position: absolute;
  top: 110%;
  left: 0;
  transform: translateY(-50%);
  height: 120px;
  width: auto;
  opacity: 1;
  transition: opacity 320ms ease;
}

.tm-nav.is-scrolled .tm-nav__logo-img--large { opacity: 0; }
.tm-nav.is-scrolled .tm-nav__logo-img--small { opacity: 1; }

@media (max-width: 860px) {
  .tm-nav__logo-img--large { height: 80px; }
}

/* ── Audience Toggle (desktop, centered) ── */
.tm-nav__toggle {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.tm-nav__toggle-track {
  position: relative;
  display: inline-flex;
  align-items: center;
  background: var(--tm-mist-100);
  border-radius: 999px;
  padding: 3px;
  border: 1px solid rgba(10, 31, 61, 0.07);
  user-select: none;
}

/* Sliding pill indicator — position set by JS after layout */
.tm-nav__toggle-indicator {
  position: absolute;
  top: 3px;
  left: 3px;
  height: calc(100% - 6px);
  border-radius: 999px;
  background: var(--tm-navy-3);
  /* Micro Lift per DESIGN.md */
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08), 0 0 0 1px rgba(10, 31, 61, 0.04);
  pointer-events: none;
  z-index: 0;
  /* Transition applied by JS after initial position is set */
}

.tm-nav__toggle-btn {
  position: relative;
  z-index: 1;
  background: none;
  border: none;
  cursor: pointer;
  padding: 9px 22px;
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.84rem;
  font-weight: 500;
  letter-spacing: 0.005em;
  line-height: 1.3;
  color: var(--tm-ink-500);
  white-space: nowrap;
  transition: color 200ms ease;
  -webkit-tap-highlight-color: transparent;
}

.tm-nav__toggle-btn[aria-selected="true"] {
  color: var(--tm-warm);
  font-weight: 600;
}

.tm-nav__toggle-btn:hover:not([aria-selected="true"]) {
  color: var(--tm-ink-700);
}

/* ── Nav Links (desktop right) ── */
.tm-nav__links {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
}

.tm-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 13px;
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--tm-ink-700);
  text-decoration: none;
  white-space: nowrap;
  background: transparent;
  border: 1px solid transparent;
  transition: color 150ms ease, border-color 150ms ease;
  -webkit-tap-highlight-color: transparent;
}

/* Underline element — excluded from pill/CTA variants */
.tm-nav__link:not(.tm-nav__link--book):not(.tm-nav__link--login)::after {
  content: '';
  position: absolute;
  bottom: 5px;
  left: 13px;
  right: 13px;
  height: 1.5px;
  background: var(--tm-navy);
  border-radius: 999px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 220ms ease;
}

.tm-nav__link:not(.tm-nav__link--book):not(.tm-nav__link--login):hover {
  color: var(--tm-navy);
}

.tm-nav__link:not(.tm-nav__link--book):not(.tm-nav__link--login):hover::after {
  transform: scaleX(1);
}

/* Active page indicator */
.tm-nav__link.is-active:not(.tm-nav__link--book):not(.tm-nav__link--login) {
  color: var(--tm-ink-900);
}

.tm-nav__link.is-active:not(.tm-nav__link--book):not(.tm-nav__link--login)::after {
  background: var(--tm-ink-900);
  transform: scaleX(1);
}

/* Login — small ghost pill with person icon */
.tm-nav__link--login {
  padding: 8px 16px;
  border-radius: 999px;
  border-color: var(--tm-emerald);
  color: var(--tm-emerald);
  font-size: 0.84rem;
  gap: 5px;
  margin-left: 6px;
}

.tm-nav__link--login i {
  font-size: 0.9rem;
  line-height: 1;
}

.tm-nav__link--login:hover {
  background-color: var(--tm-emerald);
  border-color: var(--tm-emerald);
  color: var(--tm-cream);
}

/* Book a Fit Call — solid emerald CTA */
.tm-nav__link--book {
  padding: 9px 18px;
  border-radius: 8px;
  background-color: var(--tm-emerald);
  border-color: var(--tm-emerald);
  color: var(--tm-cream);
  font-size: 0.875rem;
  font-weight: 600;
  transition:
    transform     200ms cubic-bezier(0.34, 1.3, 0.64, 1),
    box-shadow    200ms ease,
    background-color 150ms ease;
}

.tm-nav__link--book:hover {
  background-color: var(--tm-emerald);
  border-color: var(--tm-emerald);
  color: var(--tm-cream);
  transform: scale(1.05);
  box-shadow: 0 6px 20px rgba(15, 157, 110, 0.32);
}

.tm-nav__link--book:active {
  transform: scale(0.98);
  box-shadow: 0 2px 8px rgba(15, 157, 110, 0.2);
}

/* ── Hamburger (mobile only) ── */
.tm-nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  padding: 0;
  margin-left: auto;
  flex-shrink: 0;
  transition: background-color 150ms ease;
  -webkit-tap-highlight-color: transparent;
}

.tm-nav__hamburger:hover {
  background-color: rgba(10, 31, 61, 0.06);
}

.tm-nav__hamburger span {
  display: block;
  width: 21px;
  height: 1.5px;
  background-color: var(--tm-navy);
  border-radius: 2px;
  transition:
    transform 300ms cubic-bezier(0.4, 0, 0.2, 1),
    opacity   200ms ease,
    width     200ms ease;
}

.tm-nav__hamburger.is-open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.tm-nav__hamburger.is-open span:nth-child(2) {
  opacity: 0;
  width: 0;
}
.tm-nav__hamburger.is-open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ── Mobile Drawer ── */
.tm-nav__drawer {
  position: fixed;
  inset: 0 auto 0 0;
  width: min(300px, 84vw);
  background: var(--tm-cream);
  z-index: 999; /* behind nav (1000), slides below it visually */
  padding: calc(var(--tm-nav-h) + 20px) 0 40px;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  overflow-x: hidden;
  border-right: 1px solid var(--tm-line-200);
  transform: translateX(-100%);
  transition: transform 380ms cubic-bezier(0.4, 0, 0.2, 1), box-shadow 380ms ease;
  will-change: transform;
}

.tm-nav__drawer.is-open {
  transform: translateX(0);
  box-shadow: 4px 0 24px rgba(10, 31, 61, 0.10);
}

.tm-nav__drawer-section {
  padding: 20px 24px;
}

.tm-nav__drawer-section + .tm-nav__drawer-section {
  border-top: 1px solid var(--tm-line-200);
}

.tm-nav__drawer-label {
  font-family: inherit;
  font-size: 0.69rem;
  font-weight: 600;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--tm-ink-500);
  margin: 0 0 12px;
}

/* Mobile audience toggle (mirrors desktop pill) */
.tm-nav__drawer-audience {
  position: relative;
  display: flex;
  background: var(--tm-mist-100);
  border-radius: 999px;
  padding: 3px;
  border: 1px solid rgba(10, 31, 61, 0.07);
}

.tm-nav__drawer-audience-indicator {
  position: absolute;
  top: 3px;
  left: 3px;
  height: calc(100% - 6px);
  border-radius: 999px;
  background: #ffffff;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
  pointer-events: none;
  z-index: 0;
}

.tm-nav__drawer-audience-btn {
  flex: 1;
  position: relative;
  z-index: 1;
  background: none;
  border: none;
  cursor: pointer;
  padding: 9px 10px;
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.79rem;
  font-weight: 500;
  color: var(--tm-ink-500);
  text-align: center;
  white-space: nowrap;
  transition: color 200ms ease;
  -webkit-tap-highlight-color: transparent;
}

.tm-nav__drawer-audience-btn[aria-selected="true"] {
  color: var(--tm-ink-900);
  font-weight: 600;
}

/* Drawer nav links */
.tm-nav__drawer-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 0;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--tm-ink-700);
  text-decoration: none;
  border-bottom: 1px solid var(--tm-line-200);
  transition: color 150ms ease;
  -webkit-tap-highlight-color: transparent;
}

.tm-nav__drawer-link:last-of-type {
  border-bottom: none;
}

.tm-nav__drawer-link:hover {
  color: var(--tm-navy);
}

.tm-nav__drawer-link i {
  font-size: 0.95rem;
  color: var(--tm-emerald);
  width: 18px;
  text-align: center;
  flex-shrink: 0;
}

/* Login link in drawer — filled navy button */
.tm-nav__drawer-link--login {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
  padding: 12px 20px;
  background: var(--tm-navy);
  color: var(--tm-cream);
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  border-bottom: none;
  transition: background-color 150ms ease;
}

.tm-nav__drawer-link--login i {
  color: var(--tm-cream);
  width: auto;
}

.tm-nav__drawer-link--login:hover {
  background: var(--tm-navy-2);
  color: var(--tm-cream);
}

/* ── Overlay (darkens page when drawer is open) ── */
.tm-nav__overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 31, 61, 0.32);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 300ms ease, visibility 300ms ease;
}

.tm-nav__overlay.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* ── Mobile subbar (audience toggle strip below the main bar) ── */
.tm-nav__subbar {
  display: none; /* hidden on desktop — shown via media query */
}

.tm-nav__subbar-inner {
  display: flex;
  align-items: stretch;
  padding: 0;
}

.tm-nav__subbar-track {
  display: flex;
  width: 100%;
  user-select: none;
}

/* hide the sliding indicator — not used in this tab design */
.tm-nav__subbar-indicator {
  display: none;
}

.tm-nav__subbar-btn {
  flex: 1;
  position: relative;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  padding: 11px 8px 10px;
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--tm-ink-500);
  text-align: center;
  white-space: nowrap;
  transition: color 200ms ease, border-bottom-color 200ms ease;
  -webkit-tap-highlight-color: transparent;
}

/* Divider between the two buttons */
.tm-nav__subbar-btn + .tm-nav__subbar-btn {
  border-left: 1px solid rgba(10, 31, 61, 0.08);
}

.tm-nav__subbar-btn[aria-selected="true"] {
  color: var(--tm-navy);
  font-weight: 700;
  border-bottom-color: var(--tm-navy);
}

/* ── Responsive ── */

/* Tablet / mobile: hide toggle + links, show hamburger */
@media (max-width: 860px) {
  :root {
    --tm-nav-h: 74px;
  }

  .tm-nav__logo-img--large {
    top: 50%;
    height: 68px;
    transform: translateY(-50%);
    pointer-events: none;
  }

  .tm-nav.is-scrolled .tm-nav__logo-img--small {
    opacity: 1;
  }

  .tm-nav__toggle,
  .tm-nav__links {
    display: none;
  }

  .tm-nav__hamburger {
    display: flex;
  }

  .tm-nav__container {
    padding: 18px var(--nav-px);
    gap: 10px;
  }

  /* Subbar: height collapses to zero when hidden so no dead space remains */
  .tm-nav__subbar {
    display: block;
    overflow: hidden;
    opacity: 1;
    transition:
      height           280ms cubic-bezier(0.4, 0, 0.2, 1),
      opacity          240ms ease,
      border-top-color 240ms ease;
    border-top: 1px solid rgba(10, 31, 61, 0.07);
    pointer-events: auto;
  }

  .tm-nav__subbar.is-hidden {
    opacity: 0;
    border-top-color: transparent;
    pointer-events: none;
  }
}

/* Medium screens (861–1100px): compress toggle + links to fit */
@media (min-width: 861px) and (max-width: 1100px) {
  .tm-nav__toggle-btn {
    padding: 7px 13px;
    font-size: 0.79rem;
  }

  .tm-nav__link {
    padding: 7px 9px;
    font-size: 0.81rem;
  }

  .tm-nav__link--book {
    padding: 7px 13px;
  }

  .tm-nav__link--login {
    padding: 7px 12px;
  }

  .tm-nav__links {
    gap: 1px;
  }
}

/* Large screens (1101–1280px): comfortable mid-range */
@media (min-width: 1101px) and (max-width: 1280px) {
  .tm-nav__toggle-btn {
    padding: 8px 16px;
  }

  .tm-nav__link {
    padding: 7px 11px;
  }
}