/* ==========================================
   DocCraftr — Navbar  (nav.css)
   Premium redesign — max-width 1400px centered
   ========================================== */

/* ── Nav height token ── */
:root {
    --nav-h: 68px;
    --nav-max: 1400px;
}

/* ══════════════════════════════════════════
   OUTER SHELL  — full-width bar
══════════════════════════════════════════ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-h);
    z-index: 1000;
    /* Glass-morphism bar */
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(18px) saturate(180%);
    -webkit-backdrop-filter: blur(18px) saturate(180%);
    border-bottom: 1px solid rgba(226, 221, 214, 0.7);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04), 0 4px 24px rgba(0, 0, 0, 0.06);
    transition: background 0.22s, border-color 0.22s, box-shadow 0.22s;
}

[data-theme="dark"] .navbar {
    background: rgba(30, 27, 23, 0.88);
    border-bottom-color: rgba(46, 43, 37, 0.8);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.2), 0 4px 24px rgba(0, 0, 0, 0.3);
}

/* ── Inner centred container ── */
.nav-inner {
    max-width: var(--nav-max);
    width: 100%;
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    padding: 0 2rem;
    gap: 0;
}

/* ══════════════════════════════════════════
   LOGO
══════════════════════════════════════════ */
.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    flex-shrink: 0;
    margin-right: 2rem;
}

/* ── Logo icon box — wraps favicon img ── */
.nav-logo-icon {
    width: 34px;
    height: 34px;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
    transition: transform 0.18s ease;
}

.nav-logo:hover .nav-logo-icon {
    transform: scale(1.08) rotate(-3deg);
}

.nav-logo-icon .logo-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

/* ── Logo text — wraps wordmark img ── */
.nav-logo-text {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    line-height: 1;
}

.nav-logo-text .logo-img {
    height: 22px;
    width: auto;
    display: block;
    transition: filter 0.22s;
}

/* invert dark wordmark to white in dark mode */
[data-theme="dark"] .nav-logo-text .logo-img {
    filter: brightness(0) invert(1);
}

/* ══════════════════════════════════════════
   DESKTOP MENU
══════════════════════════════════════════ */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 0.1rem;
    flex: 1;
}

.nav-menu>a,
.nav-menu>.nav-dropdown>.nav-dropdown-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.28rem;
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text2);
    text-decoration: none;
    padding: 0.45rem 0.8rem;
    border-radius: 8px;
    border: none;
    background: transparent;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.15s, color 0.15s;
    line-height: 1;
}

.nav-menu>a:hover,
.nav-menu>.nav-dropdown>.nav-dropdown-toggle:hover {
    background: var(--bg3);
    color: var(--text);
}

.nav-menu>a.active {
    background: var(--accent-bg);
    color: var(--accent);
    font-weight: 600;
}

/* chevron */
.nav-dropdown-toggle .chev {
    width: 13px;
    height: 13px;
    transition: transform 0.22s ease;
    opacity: 0.55;
    flex-shrink: 0;
}

.nav-dropdown.open>.nav-dropdown-toggle .chev {
    transform: rotate(180deg);
    opacity: 0.9;
}

.nav-dropdown.open>.nav-dropdown-toggle {
    background: var(--accent-bg);
    color: var(--accent);
}

/* ── Divider between logo area and menu ── */
.nav-divider {
    width: 1px;
    height: 22px;
    background: var(--border);
    margin: 0 1.25rem 0 0;
    flex-shrink: 0;
}

/* ══════════════════════════════════════════
   MEGA DROPDOWN PANEL
══════════════════════════════════════════ */
.nav-dropdown {
    position: static;
    /* panel positions relative to .nav-inner */
}

.nav-mega-wrap {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    pointer-events: none;
    z-index: 1100;
}

.nav-mega {
    width: min(860px, calc(100vw - 3rem));
    background: var(--surface);
    border: 1px solid var(--border);
    border-top: 3px solid var(--accent);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12), 0 4px 16px rgba(0, 0, 0, 0.06);
    padding: 1.5rem 1.75rem 1.25rem;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0 1.5rem;
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    pointer-events: none;
}

.nav-mega.open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
}

.nav-mega-wrap.open {
    pointer-events: all;
}

/* column */
.nav-mega-group {
    display: flex;
    flex-direction: column;
}

.nav-mega-title {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
    padding: 0 0.5rem 0.5rem;
    border-bottom: 1px solid var(--border);
    margin-bottom: 0.35rem;
}

.nav-mega a {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.5rem 0.5rem;
    font-size: 0.84rem;
    color: var(--text2);
    text-decoration: none;
    border-radius: 7px;
    transition: background 0.12s, color 0.12s, transform 0.12s;
    white-space: nowrap;
}

.nav-mega a:hover {
    background: var(--accent-bg);
    color: var(--accent);
    transform: translateX(2px);
}

.nav-mega a .tool-emoji {
    font-size: 0.95rem;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg3);
    border-radius: 6px;
    flex-shrink: 0;
    transition: background 0.12s;
}

.nav-mega a:hover .tool-emoji {
    background: var(--accent-bg);
}

/* ══════════════════════════════════════════
   NAV ACTIONS (right side)
══════════════════════════════════════════ */
.nav-spacer {
    flex: 1;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

/* Theme toggle */
.btn-theme {
    width: 36px;
    height: 36px;
    border-radius: 9px;
    border: 1px solid var(--border);
    background: var(--surface2);
    color: var(--text2);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    transition: all 0.15s ease;
}

.btn-theme:hover {
    background: var(--accent-bg);
    border-color: var(--accent-border);
    color: var(--accent);
    transform: rotate(12deg) scale(1.08);
}

/* Hamburger */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 38px;
    height: 38px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 9px;
    cursor: pointer;
    gap: 5px;
    padding: 0;
    z-index: 1100;
    flex-shrink: 0;
    transition: background 0.15s, border-color 0.15s;
}

.nav-toggle:hover {
    background: var(--bg3);
    border-color: var(--border2);
}

.nav-toggle span {
    display: block;
    width: 16px;
    height: 1.5px;
    background: var(--text);
    border-radius: 2px;
    transition: transform 0.25s ease, opacity 0.2s ease, width 0.2s ease;
    transform-origin: center;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
    width: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
}

/* ══════════════════════════════════════════
   OVERLAY
══════════════════════════════════════════ */
.nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(2px);
    z-index: 1040;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

.nav-overlay.show {
    opacity: 1;
    pointer-events: all;
}

/* ══════════════════════════════════════════
   MOBILE SLIDE PANEL  — full redesign
══════════════════════════════════════════ */
.nav-mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: min(320px, 88vw);
    background: var(--surface);
    z-index: 1050;
    display: flex;
    flex-direction: column;
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    box-shadow: 4px 0 40px rgba(0, 0, 0, 0.18);
}

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

/* Panel header */
.nav-mobile-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.25rem;
    height: var(--nav-h);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
    background: var(--surface);
}

.nav-mobile-logo {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    text-decoration: none;
}

.nav-mobile-logo-icon {
    width: 30px;
    height: 30px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
}

.nav-mobile-logo-icon .logo-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.nav-mobile-logo-text {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    line-height: 1;
}

.nav-mobile-logo-text .logo-img {
    height: 20px;
    width: auto;
    display: block;
    transition: filter 0.22s;
}

[data-theme="dark"] .nav-mobile-logo-text .logo-img {
    filter: brightness(0) invert(1);
}

.nav-mobile-close {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--surface2);
    color: var(--text2);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    line-height: 1;
    transition: background 0.15s, color 0.15s;
}

.nav-mobile-close:hover {
    background: var(--error-bg, #fdf0f0);
    color: #d63f3f;
    border-color: #d63f3f;
}

/* Scrollable body */
.nav-mobile-body {
    flex: 1;
    overflow-y: auto;
    padding: 0.75rem 0 1rem;
    overscroll-behavior: contain;
}

/* Section group labels */
.nav-mobile-group {
    padding: 0.9rem 1.25rem 0.25rem;
    font-size: 0.62rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.nav-mobile-group::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
    margin-left: 0.5rem;
}

/* Links */
.nav-mobile-body a {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.52rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--text2);
    text-decoration: none;
    transition: background 0.12s, color 0.12s;
    border-left: 2px solid transparent;
}

.nav-mobile-body a:hover {
    background: var(--bg3);
    color: var(--text);
    border-left-color: var(--accent);
}

.nav-mobile-body a.active {
    color: var(--accent);
    background: var(--accent-bg);
    border-left-color: var(--accent);
    font-weight: 600;
}

.nav-mobile-body a .tool-emoji {
    font-size: 0.85rem;
    width: 26px;
    height: 26px;
    background: var(--bg3);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background 0.12s;
}

.nav-mobile-body a:hover .tool-emoji,
.nav-mobile-body a.active .tool-emoji {
    background: var(--accent-bg);
}

/* Panel footer */
.nav-mobile-footer {
    flex-shrink: 0;
    border-top: 1px solid var(--border);
    padding: 0.75rem 0;
    background: var(--surface2);
}

.nav-mobile-footer a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.45rem 1.25rem;
    font-size: 0.82rem;
    color: var(--text3);
    text-decoration: none;
    border-left: 2px solid transparent;
    transition: background 0.12s, color 0.12s;
}

.nav-mobile-footer a:hover {
    background: var(--bg3);
    color: var(--text2);
    border-left-color: var(--border2);
}

/* ══════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════ */
@media (max-width: 900px) {
    .nav-menu {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }
}

@media (max-width: 480px) {
    .nav-inner {
        padding: 0 1rem;
    }

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