/* Sovereign Nav Component — @layer components */
@layer components {

  /* ── Container ── */
  .sov-nav {
    display: flex;
    flex-direction: column;
    background: var(--surface-1);
    border-right: 1px solid var(--surface-3);
    padding: var(--space-5) var(--space-4);

    /* Desktop: fixed left sidebar */
    position: fixed;
    top: 0;
    left: 0;
    width: 260px;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
  }

  /* ── Brand ── */
  .sov-nav__brand {
    margin-bottom: var(--space-7);
    padding-left: var(--space-2);
  }

  .sov-nav__brand-label {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 400;
    color: var(--cream);
  }

  .sov-nav__brand-dot {
    color: var(--terracotta-light);
  }

  /* ── Links container ── */
  .sov-nav__links {
    display: flex;
    flex-direction: column;
    gap: 2px;
    list-style: none;
  }

  /* ── Section label ── */
  .sov-nav__section-label {
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-ghost);
    opacity: 0.7;
    padding: var(--space-4) 12px var(--space-2);
  }

  /* ── Individual link ── */
  .sov-nav__link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 400;
    color: var(--ink-ghost);
    transition: all 0.15s ease;
    cursor: pointer;
    white-space: nowrap;
  }

  .sov-nav__link:hover {
    background: var(--surface-2);
    color: var(--cream);
  }

  .sov-nav__link:focus-visible {
    outline: 2px solid var(--terracotta);
    outline-offset: 2px;
  }

  .sov-nav__link--active {
    background: var(--terracotta-muted);
    color: var(--terracotta-light);
    font-weight: 500;
  }

  .sov-nav__link-icon {
    width: 18px;
    height: 18px;
    opacity: 0.7;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
  }

  /* ── Spacer ── */
  .sov-nav__spacer {
    flex: 1;
  }

  /* ── Theme toggle ── */
  .sov-nav__theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    border: none;
    background: transparent;
    color: var(--ink-ghost);
    cursor: pointer;
    transition: all var(--ease-fast);
    margin: 0 12px var(--space-2);
  }

  .sov-nav__theme-toggle:hover {
    background: var(--surface-2);
    color: var(--cream);
  }

  .sov-nav__theme-toggle:focus-visible {
    outline: 2px solid var(--terracotta);
    outline-offset: 2px;
  }

  /* ── User block ── */
  .sov-nav__user {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
  }

  .sov-nav__user:hover {
    background: var(--surface-2);
  }

  .sov-nav__avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--terracotta);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 13px;
    font-weight: 600;
    flex-shrink: 0;
  }

  .sov-nav__user-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    color: inherit;
    width: 100%;
  }

  .sov-nav__user-info {
    display: flex;
    flex-direction: column;
    min-width: 0;
  }

  .sov-nav__user-name {
    color: var(--cream);
    font-size: 13px;
  }

  .sov-nav__founding-badge {
    font-family: var(--font-body);
    font-size: 0.65rem;
    color: var(--terracotta);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    display: block;
    margin-top: 2px;
  }

  /* ── Logout link ── */
  .sov-nav__logout {
    display: block;
    font-family: var(--font-body);
    font-size: 12px;
    color: var(--ink-ghost);
    text-decoration: none;
    padding: 6px 12px;
    margin-top: var(--space-1);
    border-radius: var(--radius-sm);
    transition: color var(--ease-fast), background var(--ease-fast);
  }

  .sov-nav__logout:hover {
    color: var(--cream);
    background: var(--surface-2);
  }

  .sov-nav__logout:focus-visible {
    outline: 2px solid var(--terracotta);
    outline-offset: 2px;
  }

  /* ── Hamburger button (hidden on desktop) ── */
  .sov-nav__hamburger {
    display: none;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border: none;
    background: transparent;
    color: var(--cream);
    cursor: pointer;
    padding: 0;
    flex-shrink: 0;
    z-index: 210;
    border-radius: var(--radius-sm);
    transition: background var(--ease-fast);
  }

  .sov-nav__hamburger:hover {
    background: var(--surface-2);
  }

  .sov-nav__hamburger:focus-visible {
    outline: 2px solid var(--terracotta);
    outline-offset: 2px;
  }

  .sov-nav__hamburger-icon {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 20px;
    height: 20px;
    position: relative;
  }

  .sov-nav__hamburger-icon span {
    display: block;
    height: 2px;
    width: 100%;
    background: var(--cream);
    border-radius: 1px;
    transition: all 0.25s ease;
    transform-origin: center;
  }

  /* Hamburger -> X transform when open */
  .sov-nav--open .sov-nav__hamburger-icon span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .sov-nav--open .sov-nav__hamburger-icon span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
  }

  .sov-nav--open .sov-nav__hamburger-icon span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  /* ── Overlay backdrop (mobile only) ── */
  .sov-nav__overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 199;
    opacity: 0;
    transition: opacity 0.25s ease;
  }

  .sov-nav__overlay--visible {
    opacity: 1;
  }

  /* ── Mobile header bar ── */
  .sov-nav__mobile-header {
    display: none;
  }

  /* ── Mobile (< 768px): hamburger slide-out ── */
  @media (max-width: 767px) {

    /* Mobile top bar */
    .sov-nav__mobile-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      position: sticky;
      top: 0;
      left: 0;
      right: 0;
      z-index: 200;
      background: var(--surface-1);
      border-bottom: 1px solid var(--border);
      padding: var(--space-2) var(--space-4);
      height: 56px;
    }

    .sov-nav__hamburger {
      display: flex;
    }

    /* Nav becomes slide-out panel */
    .sov-nav {
      position: fixed;
      top: 0;
      left: 0;
      width: 280px;
      max-width: 85vw;
      height: 100vh;
      z-index: 200;
      transform: translateX(-100%);
      transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      border-right: 1px solid var(--surface-3);
      overflow-y: auto;
      overflow-x: hidden;
    }

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

    .sov-nav__overlay {
      display: block;
    }

    /* Restore vertical layout inside slide-out */
    .sov-nav__brand {
      margin-bottom: var(--space-5);
    }

    .sov-nav__links {
      flex-direction: column;
      gap: 2px;
    }

    .sov-nav__link {
      min-height: 44px;
      padding: 12px 12px;
    }

    .sov-nav__section-label {
      display: block;
    }

    .sov-nav__spacer {
      flex: 1;
    }

    .sov-nav__user {
      display: flex;
    }

    .sov-nav__theme-toggle {
      width: 44px;
      height: 44px;
      margin: 0 12px var(--space-2);
    }
  }
}