/* ============================================================
   NAVBAR — Apple-style Floating Pill · B&W · Dark / Light
   Developer Portfolio · navbar.css
   ============================================================ */

/* ── Header Wrapper (centres the pill) ───────────────── */
.nav-header {
  position: fixed;
  top: 0;
  padding-top: 1.25rem;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  justify-content: center;
  pointer-events: none;
  opacity: 0;
  transform: translateY(-20px);
}

/* ── Pill Container ───────────────────────────────────── */
.navbar {
  pointer-events: all;
  display: flex;
  align-items: center;
  gap: 0;
  height: var(--nav-h);
  padding: 0 0.375rem;            /* inner pill padding */
  background: var(--nav-bg);
  border: 1px solid var(--nav-border);
  border-radius: var(--nav-radius);

  /* Frosted glass */
  backdrop-filter: blur(24px) saturate(200%);
  -webkit-backdrop-filter: blur(24px) saturate(200%);

  /* Shadow depth */
  box-shadow:
    0 1px 0 rgba(255,255,255,0.06) inset,
    0 4px 24px rgba(0,0,0,0.18),
    0 1px 4px rgba(0,0,0,0.12);

  /* Min / max width */
  width: 92%;
  max-width: 1400px;
  justify-content: space-between;

  /* Smooth width transition */
  transition: width 0.7s cubic-bezier(0.2, 1, 0.3, 1),
              max-width 0.7s cubic-bezier(0.2, 1, 0.3, 1),
              padding 0.7s cubic-bezier(0.2, 1, 0.3, 1),
              gap 0.7s cubic-bezier(0.2, 1, 0.3, 1),
              background 0.4s ease,
              border-color 0.4s ease,
              box-shadow 0.4s ease,
              border-radius 0.7s cubic-bezier(0.2, 1, 0.3, 1);
}

/* Compressed state (on scroll) — ELEGANT PILL */
.navbar.is-scrolled {
  width: 90%;
  max-width: 820px;
  padding: 0 0.5rem 0 1.25rem;
  gap: 1.5rem;
  justify-content: space-between;
}

/* Ensure all elements stay visible */
.navbar.is-scrolled .logo-text,
.navbar.is-scrolled .nav-divider,
.navbar.is-scrolled .nav-links,
.navbar.is-scrolled .nav-cta {
  display: flex;
}

.navbar.is-scrolled .nav-links {
  gap: 1.25rem;
}

.navbar.is-scrolled .nav-link {
  font-size: 0.825rem;
}

.navbar.is-scrolled .nav-logo {
  padding-right: 0;
}

.navbar.is-scrolled .nav-controls {
  padding-left: 0;
  gap: 0.375rem;
}

/* ── Logo ─────────────────────────────────────────────── */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0 0.75rem 0 0.5rem;
  height: calc(var(--nav-h) - 0.75rem);
  border-radius: calc(var(--nav-radius) - 4px);
  transition: background 0.2s ease;
  flex-shrink: 0;
}

.nav-logo:hover {
  background: var(--surface);
}

/* Animated 3-bar logo mark */
.logo-mark {
  display: flex;
  flex-direction: column;
  gap: 3.5px;
  width: 16px;
}

.logo-bar {
  display: block;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transform-origin: left;
  transition: width 0.3s var(--ease-spring), background 0.3s ease;
}

.logo-bar--1 { width: 100%; }
.logo-bar--2 { width: 65%; }
.logo-bar--3 { width: 40%; }

.nav-logo:hover .logo-bar--2 { width: 100%; }
.nav-logo:hover .logo-bar--3 { width: 75%; }

.logo-text {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  white-space: nowrap;
}

/* ── Divider ──────────────────────────────────────────── */
.nav-divider {
  width: 1px;
  height: 20px;
  background: var(--border);
  flex-shrink: 0;
  margin: 0 0.25rem;
}

/* ── Nav Links ────────────────────────────────────────── */
.nav-links {
  display: flex;
  align-items: center;
}

.nav-link {
  position: relative;
  display: flex;
  align-items: center;
  padding: 0 0.85rem;
  height: calc(var(--nav-h) - 0.75rem);
  font-size: 0.83rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--text-secondary);
  border-radius: calc(var(--nav-radius) - 4px);
  transition: color 0.2s ease, background 0.2s ease;
  white-space: nowrap;
  will-change: transform;
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--surface);
}

.nav-link.active {
  color: var(--text-primary);
}

/* Active indicator — small dot below */
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--accent);
}

/* ── Right Controls ───────────────────────────────────── */
.nav-controls {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding-left: 0.375rem;
  flex-shrink: 0;
}

/* ── Theme Toggle ─────────────────────────────────────── */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  color: var(--text-secondary);
  transition: color 0.2s ease, background 0.2s ease, transform 0.4s var(--ease-spring);
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: var(--surface);
  color: var(--text-primary);
}

/* Sun/moon icon switching */
.icon-sun,
.icon-moon {
  position: absolute;
  transition: opacity 0.3s ease, transform 0.4s var(--ease-spring);
}

/* dark mode → show sun (to switch to light) */
[data-theme="dark"] .icon-sun  { opacity: 1;  transform: scale(1) rotate(0deg); }
[data-theme="dark"] .icon-moon { opacity: 0;  transform: scale(0) rotate(-90deg); }

/* light mode → show moon (to switch to dark) */
[data-theme="light"] .icon-sun  { opacity: 0;  transform: scale(0) rotate(90deg); }
[data-theme="light"] .icon-moon { opacity: 1;  transform: scale(1) rotate(0deg); }

/* ── CTA Button ───────────────────────────────────────── */
.nav-cta {
  display: inline-flex;
  align-items: center;
  height: 34px;
  padding: 0 1.1rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.015em;
  border-radius: var(--nav-radius);

  background: var(--accent);
  color: #fff;
  border: 1px solid transparent;

  transition: transform 0.3s var(--ease-spring),
              box-shadow 0.3s ease,
              background 0.3s ease,
              color 0.3s ease;
  white-space: nowrap;
  will-change: transform;
}

.nav-cta:hover {
  transform: scale(1.04);
  box-shadow: 0 4px 20px var(--accent-glow);
  background: var(--accent);
  opacity: 0.9;
}

[data-theme="light"] .nav-cta {
  color: #fff;
}

[data-theme="light"] .nav-cta:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.nav-cta:active {
  transform: scale(0.97);
}

/* ── Hamburger ────────────────────────────────────────── */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  gap: 5px;
  transition: background 0.2s ease;
  flex-shrink: 0;
}

.hamburger:hover {
  background: var(--surface);
}

.hb-line {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--text-primary);
  border-radius: 2px;
  transform-origin: center;
  will-change: transform, opacity;
  transition: background 0.2s ease;
}

/* ── Mobile Overlay ───────────────────────────────────── */
.mobile-overlay {
  position: fixed;
  inset: 0;
  z-index: 990;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 2rem 1.5rem calc(env(safe-area-inset-bottom) + 2rem);
  background: var(--bg);
  pointer-events: none;
  visibility: hidden;
  clip-path: inset(0 0 100% 0 round 24px);
  transition: clip-path 0.6s var(--ease-out), visibility 0s 0.6s;
}

.mobile-overlay.is-open {
  pointer-events: all;
  visibility: visible;
  clip-path: inset(0 0 0% 0 round 0px);
  transition: clip-path 0.5s var(--ease-out), visibility 0s 0s;
}

.mobile-links {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 2rem;
}

.mob-item {
  overflow: hidden;
}

.mob-link {
  display: block;
  font-size: clamp(2.2rem, 8vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--text-secondary);
  line-height: 1.15;
  padding: 0.2rem 0;
  transform: translateY(110%);
  will-change: transform;
  transition: color 0.2s ease;
}

.mob-link:hover {
  color: var(--text-primary);
}

.mob-cta {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-strong);
  padding-bottom: 0.5rem;
  opacity: 0;
  transform: translateY(16px);
  will-change: transform, opacity;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.mob-cta:hover {
  border-color: var(--text-primary);
}

/* ── Responsive ───────────────────────────────────────── */
@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-cta   { display: none; }
  .hamburger { display: flex; }

  /* Force static pill on mobile */
  .navbar {
    width: 90%;
    max-width: none;
    padding: 0 0.5rem 0 1.25rem;
    gap: 1.5rem;
    border-radius: var(--nav-radius); /* Keep it rounded */
    justify-content: space-between !important;
  }

  /* Ensure logo text is always visible */
  .logo-text {
    display: block !important;
  }

  .nav-logo {
    padding-right: 0;
  }

  .nav-controls {
    padding-left: 0;
    gap: 0.5rem;
  }
}

@media (max-width: 380px) {
  /* Only hide on extremely small screens if necessary, but following PR 
     we keep it as seen in the image */
  .logo-text { display: block; }
}