/* =========================================================
   Navigation Bar - Clean Cartography Design
   ========================================================= */

/* --- Core Nav Bar --- */
.nav {
    background: rgba(255,255,255,0.92);
    border-bottom: 1px solid var(--border, #E8E6E1);
    padding: 0 32px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

/* --- Left Section --- */
.nav-left {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-logo {
    font-family: var(--font-display, 'DM Serif Display', Georgia, serif);
    font-size: 20px;
    color: var(--accent, #1B6B6D);
    letter-spacing: -0.02em;
    text-decoration: none;
    line-height: 1;
}

.nav-logo:hover {
    color: var(--accent-hover, #145252);
    text-decoration: none;
}

/* --- Nav Links --- */
.nav-links {
    display: flex;
    gap: 4px;
    align-items: center;
}

.nav-link {
    padding: 8px 14px;
    font-size: 13.5px;
    font-weight: 500;
    color: var(--text-secondary, #5C5C5C);
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.15s ease;
    position: relative;
    font-family: var(--font-body, 'Plus Jakarta Sans', system-ui, sans-serif);
    white-space: nowrap;
}

.nav-link:hover {
    color: var(--text-primary, #1A1A1A);
    background: var(--bg-subtle, #F5F4F0);
    text-decoration: none;
}

.nav-link.active {
    color: var(--accent, #1B6B6D);
    background: var(--accent-light, #E8F4F4);
}

/* --- Tools Dropdown (CSS-only hover + click for a11y) --- */
.nav-dropdown {
    position: relative;
    display: inline-flex;
}

.nav-dropdown-trigger {
    padding: 8px 14px;
    font-size: 13.5px;
    font-weight: 500;
    color: var(--text-secondary, #5C5C5C);
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.15s ease;
    font-family: var(--font-body, 'Plus Jakarta Sans', system-ui, sans-serif);
    cursor: pointer;
    background: none;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    white-space: nowrap;
}

.nav-dropdown-trigger:hover {
    color: var(--text-primary, #1A1A1A);
    background: var(--bg-subtle, #F5F4F0);
}

.nav-dropdown-trigger svg {
    width: 10px;
    height: 10px;
    opacity: 0.5;
    transition: transform 0.15s ease;
}

/* Bridge gap between trigger and menu */
.nav-dropdown::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    height: 8px;
}

.nav-dropdown-menu {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    background: var(--bg-surface, #FFFFFF);
    border: 1px solid var(--border, #E8E6E1);
    border-radius: 8px;
    padding: 6px 0;
    min-width: 180px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    z-index: 200;
}

/* Show on hover */
.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown.open .nav-dropdown-menu {
    display: block;
}

.nav-dropdown:hover .nav-dropdown-trigger svg {
    transform: rotate(180deg);
}

.nav-dropdown-menu a {
    display: block;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary, #5C5C5C);
    text-decoration: none;
    transition: all 0.12s ease;
    font-family: var(--font-body, 'Plus Jakarta Sans', system-ui, sans-serif);
}

.nav-dropdown-menu a:hover {
    color: var(--text-primary, #1A1A1A);
    background: var(--bg-subtle, #F5F4F0);
}

.nav-dropdown-divider {
    height: 1px;
    background: var(--border-subtle, #F0EEE9);
    margin: 4px 0;
}

/* --- Right Section --- */
.nav-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Scope selector pill */
.nav-scope {
    font-size: 12px;
    color: var(--text-muted, #8A8A8A);
    padding: 5px 10px;
    border: 1px solid var(--border, #E8E6E1);
    border-radius: 6px;
    background: var(--bg-subtle, #F5F4F0);
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    font-family: var(--font-body, 'Plus Jakarta Sans', system-ui, sans-serif);
}

.nav-scope strong {
    color: var(--text-secondary, #5C5C5C);
}

.nav-scope select {
    appearance: none;
    -webkit-appearance: none;
    border: none;
    background: transparent;
    color: var(--text-secondary, #5C5C5C);
    font-size: 12px;
    font-weight: 600;
    font-family: var(--font-body, 'Plus Jakarta Sans', system-ui, sans-serif);
    cursor: pointer;
    padding-right: 14px;
    max-width: 140px;
    outline: none;
    background-image: url("data:image/svg+xml,%3Csvg width='8' height='5' viewBox='0 0 8 5' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L4 4L7 1' stroke='%235C5C5C' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0 center;
}

/* AI trigger button in nav */
.nav-ai-trigger {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    height: 34px;
    border-radius: 6px;
    border: none;
    background: var(--accent, #1B6B6D);
    color: #ffffff;
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font-body, 'Plus Jakarta Sans', system-ui, sans-serif);
    cursor: pointer;
    transition: all 0.15s ease;
    white-space: nowrap;
}

.nav-ai-trigger:hover {
    background: var(--accent-hover, #145252);
}

/* User avatar circle */
.nav-user {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--accent-light, #E8F4F4);
    color: var(--accent, #1B6B6D);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font-body, 'Plus Jakarta Sans', system-ui, sans-serif);
    text-decoration: none;
    transition: all 0.15s ease;
    cursor: pointer;
    position: relative;
}

.nav-user:hover {
    background: var(--accent, #1B6B6D);
    color: #FFFFFF;
}

/* User dropdown */
.nav-user-dropdown {
    position: relative;
}

.nav-user-menu {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--bg-surface, #FFFFFF);
    border: 1px solid var(--border, #E8E6E1);
    border-radius: 8px;
    padding: 6px 0;
    min-width: 160px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    z-index: 200;
}

.nav-user-dropdown:hover .nav-user-menu,
.nav-user-dropdown.open .nav-user-menu {
    display: block;
}

/* Bridge gap */
.nav-user-dropdown::after {
    content: '';
    position: absolute;
    top: 100%;
    left: -10px;
    right: -10px;
    height: 10px;
}

.nav-user-menu a {
    display: block;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary, #5C5C5C);
    text-decoration: none;
    transition: all 0.12s ease;
    font-family: var(--font-body, 'Plus Jakarta Sans', system-ui, sans-serif);
}

.nav-user-menu a:hover {
    color: var(--text-primary, #1A1A1A);
    background: var(--bg-subtle, #F5F4F0);
}

.nav-user-menu a.nav-logout {
    color: var(--error, #C5303C);
    border-top: 1px solid var(--border-subtle, #F0EEE9);
    margin-top: 4px;
    padding-top: 10px;
}

.nav-user-menu a.nav-logout:hover {
    background: var(--error-light, #FDE8EA);
    color: var(--error, #C5303C);
}

/* --- Mobile hamburger toggle --- */
.nav-mobile-toggle {
    display: none;
    background: none;
    border: none;
    padding: 6px;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
    align-items: center;
    justify-content: center;
}

.nav-mobile-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary, #1A1A1A);
    border-radius: 2px;
    transition: all 0.2s ease;
}

.nav-mobile-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-mobile-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* --- Main Content Spacing --- */
.main-content {
    padding-top: 0 !important;
}

/* --- Mobile Responsive (768px) --- */
@media (max-width: 768px) {
    .nav {
        padding: 0 16px;
        flex-wrap: wrap;
        height: auto;
        min-height: 56px;
    }

    .nav-left {
        width: 100%;
        justify-content: space-between;
        flex-wrap: nowrap;
    }

    .nav-mobile-toggle {
        display: flex;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        padding: 8px 0;
        border-top: 1px solid var(--border, #E8E6E1);
    }

    .nav-links.open {
        display: flex;
    }

    .nav-link,
    .nav-dropdown-trigger {
        width: 100%;
        padding: 10px 14px;
        border-radius: 6px;
    }

    .nav-dropdown-menu {
        position: static;
        box-shadow: none;
        border: none;
        padding-left: 16px;
        background: transparent;
    }

    .nav-dropdown::after {
        display: none;
    }

    .nav-right {
        display: none;
        width: 100%;
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        padding: 8px 0;
        border-top: 1px solid var(--border, #E8E6E1);
    }

    .nav-links.open ~ .nav-right,
    .nav-right.open {
        display: flex;
    }

    .nav-scope {
        width: 100%;
    }

    .nav-scope select {
        max-width: none;
        flex: 1;
    }
}

/* =========================================================
   Fullscreen Page Overrides (Task 9)
   Fixed back-to-dashboard button for fullscreen pages
   ========================================================= */
.fullscreen-nav {
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 100;
    display: flex;
    gap: 8px;
}

.fullscreen-back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    font-family: var(--font-body, 'Plus Jakarta Sans', system-ui, sans-serif);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary, #5C5C5C);
    background: var(--bg-surface, #FFFFFF);
    border: 1px solid var(--border, #E8E6E1);
    border-radius: var(--radius, 6px);
    text-decoration: none;
    box-shadow: var(--shadow-sm, 0 1px 2px rgba(0,0,0,0.05));
    transition: all var(--transition-fast, 0.15s ease);
}

.fullscreen-back:hover {
    color: var(--text-primary, #1A1A1A);
    box-shadow: var(--shadow-md, 0 4px 6px rgba(0,0,0,0.1));
    text-decoration: none;
}

.fullscreen-ai-trigger {
    width: 34px;
    height: 34px;
    border-radius: 6px;
    border: 1px solid var(--border, #E8E6E1);
    background: var(--bg-surface, #FFFFFF);
    color: var(--accent, #1B6B6D);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.15s ease;
    padding: 0;
}

.fullscreen-ai-trigger:hover {
    background: var(--accent-light, #E8F4F4);
    border-color: var(--accent, #1B6B6D);
}

/* Hide old nav elements that may linger */
.top-banner,
.navbar {
    display: none !important;
}