/* UN-Habitat Inspired Navigation Bar Styles */

/* CSS Variables for UN-Habitat Theme - Official Brand Colors */
:root {
    /* UN-Habitat Blue - Primary (PANTONE 306C) */
    --un-blue: #00b2e3;
    --un-blue-dark: #00689D;  /* Dark Blue - PANTONE 7462C */
    --un-blue-light: #4DD4F7;

    /* UN-Habitat Orange - Accent (PANTONE 1375C) */
    --un-orange: #FD9D24;
    --un-orange-dark: #E8891A;

    /* SDG 11 Orange alias */
    --sdg11-orange: var(--un-orange);
    --sdg11-orange-dark: var(--un-orange-dark);

    /* Legacy aliases */
    --unhabitat-blue: var(--un-blue);
    --unhabitat-dark: var(--un-blue-dark);
    --unhabitat-light: #f8f9fa;

    --nav-text: #ffffff;
    --nav-text-muted: rgba(255, 255, 255, 0.9);
    --nav-hover: rgba(255, 255, 255, 0.15);
    --dropdown-bg: #ffffff;
    --dropdown-text: #1a1a2e;
    --dropdown-hover: #E6F9FC;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

/* Sticky Header */
header {
    position: sticky;
    top: 0;
    z-index: 1050;
}

/* Main Navbar - UN Blue Style */
.main-navbar {
    position: relative;
    z-index: 1050;
    background: var(--un-blue);
    padding: 0;
    transition: all var(--transition-normal);
}

.main-navbar .container,
.main-navbar .container-fluid {
    width: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    padding: 0 1rem;
}

header.scrolled .main-navbar {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

/* Logo Styles */
.logo-container {
    flex-shrink: 0;
    padding: 0.75rem 0;
}

.logo-container img {
    height: 50px;
    max-width: 100%;
    transition: all var(--transition-normal);
    filter: brightness(0) invert(1);
}

.logo-container img:hover {
    opacity: 0.9;
}

.logo-right {
    margin-left: 1.5rem;
}

.logo-right img {
    height: 40px;
}

header.scrolled .logo-container img {
    height: 42px;
}

/* Main Navigation Links */
.main-nav-links {
    display: flex;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 0;
    list-style: none;
}

.main-nav-links .nav-item {
    position: relative;
}

.main-nav-links .nav-link {
    color: #ffffff !important;
    font-weight: 500;
    font-size: 0.9rem;
    padding: 1.25rem 1.25rem;
    border-radius: 0;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 3px solid transparent;
    position: relative;
}

.main-nav-links .nav-link i {
    font-size: 0.8rem;
    margin-right: 0.5rem;
    opacity: 0.9;
    color: #ffffff !important;
}

.main-nav-links .nav-link:hover {
    color: #ffffff !important;
    background-color: rgba(255, 255, 255, 0.1);
}

.main-nav-links .nav-link.active {
    color: #ffffff !important;
    border-bottom-color: var(--sdg11-orange);
}

/* Dropdown Arrow */
.main-nav-links .nav-link.dropdown-toggle::after {
    display: inline-block;
    margin-left: 0.5rem;
    vertical-align: middle;
    content: "";
    border-top: 0.35em solid;
    border-right: 0.35em solid transparent;
    border-bottom: 0;
    border-left: 0.35em solid transparent;
    transition: transform var(--transition-fast);
}

.main-nav-links .nav-item.dropdown:hover .nav-link.dropdown-toggle::after {
    transform: rotate(180deg);
}

/* ========================================
   MEGA DROPDOWN MENU - UN-Habitat Style
   ======================================== */
.main-nav-links .dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--dropdown-bg);
    border: none;
    border-radius: 0;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    padding: 0;
    margin-top: 0;
    min-width: 280px;
    z-index: 1050;
    border-top: 3px solid var(--sdg11-orange);
}

/* Mega Menu Header */
.dropdown-menu-header {
    background: linear-gradient(135deg, var(--unhabitat-dark) 0%, #2d2d4a 100%);
    color: white;
    padding: 1rem 1.25rem;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* Dropdown Items */
.dropdown-item {
    padding: 0.85rem 1.25rem;
    font-size: 0.9rem;
    color: var(--dropdown-text);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    border-left: 3px solid transparent;
    background: transparent;
}

.dropdown-item i {
    color: var(--sdg11-orange);
    width: 24px;
    font-size: 0.9rem;
    opacity: 0.9;
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background-color: var(--dropdown-hover);
    color: var(--unhabitat-dark);
    border-left-color: var(--sdg11-orange);
    padding-left: 1.5rem;
}

.dropdown-item:hover i {
    opacity: 1;
    transform: translateX(2px);
}

.dropdown-item:focus,
.dropdown-item:active {
    background-color: var(--dropdown-hover);
    color: var(--unhabitat-dark);
}

/* Dropdown Divider */
.dropdown-divider {
    margin: 0;
    border-color: #e9ecef;
    opacity: 1;
}

/* Learn Dropdown - Wider */
.dropdown-menu-learn {
    min-width: 300px;
}

/* Desktop: Show dropdown on hover with smooth animation */
@media (min-width: 992px) {
    .main-nav-links .dropdown-menu {
        display: block;
        opacity: 0;
        visibility: hidden;
        transform: translateY(10px);
        transition: all var(--transition-fast);
        pointer-events: none;
    }

    .main-nav-links .nav-item.dropdown:hover > .dropdown-menu {
        display: block;
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        pointer-events: auto;
    }

    /* User menu hover */
    .user-menu .dropdown-menu {
        display: block;
        opacity: 0;
        visibility: hidden;
        transform: translateY(10px);
        transition: all var(--transition-fast);
        pointer-events: none;
    }

    .user-menu:hover > .dropdown-menu {
        display: block;
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        pointer-events: auto;
    }
}

/* User menu dropdown */
.user-menu .dropdown-menu {
    border: none;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    border-radius: 0;
    padding: 0;
    margin-top: 0;
    min-width: 220px;
    z-index: 1050;
    border-top: 3px solid var(--sdg11-orange);
    background: var(--dropdown-bg);
}

/* ========================================
   RIGHT SECTION (Auth & CTA)
   ======================================== */
.nav-right-section {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-left: auto;
    padding: 0.5rem 0;
}

/* User Menu */
.user-menu {
    position: relative;
}

.user-dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.5rem 1rem;
    color: #ffffff;
    text-decoration: none;
    border-radius: 6px;
    transition: all var(--transition-fast);
    font-size: 0.9rem;
    font-weight: 500;
    background: var(--sdg11-orange);
    border: none;
    box-shadow: 0 2px 8px rgba(253, 157, 36, 0.3);
}

.user-dropdown-toggle:hover {
    background-color: var(--sdg11-orange-dark);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(253, 157, 36, 0.4);
}

.user-dropdown-toggle .fa-user-circle {
    font-size: 1.4rem;
    color: #ffffff;
}

.user-dropdown-toggle .fa-chevron-down {
    font-size: 0.7rem;
    opacity: 0.9;
    transition: transform var(--transition-fast);
}

.user-menu:hover .user-dropdown-toggle .fa-chevron-down {
    transform: rotate(180deg);
}

.user-name {
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-weight: 500;
}

/* Auth Login Button */
.btn-auth-login {
    display: inline-flex;
    align-items: center;
    padding: 0.6rem 1.25rem;
    color: var(--nav-text);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.85rem;
    border-radius: 4px;
    transition: all var(--transition-fast);
    border: 1px solid rgba(255, 255, 255, 0.3);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-auth-login:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    color: var(--nav-text);
}

/* Create Report CTA Button - SDG 11 Orange */
.btn-create-report {
    display: inline-flex;
    align-items: center;
    padding: 0.65rem 1.5rem;
    background: var(--sdg11-orange);
    color: white;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.85rem;
    border-radius: 4px;
    transition: all var(--transition-normal);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 10px rgba(249, 157, 38, 0.3);
}

.btn-create-report:hover {
    background: #e88d1a;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(249, 157, 38, 0.4);
    color: white;
}

.btn-create-report i {
    font-size: 0.85rem;
}

/* ========================================
   NAVBAR TOGGLER (Mobile Menu Button)
   ======================================== */
.navbar-toggler {
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 0.5rem 0.75rem;
    border-radius: 4px;
    background: transparent;
}

.navbar-toggler:focus {
    box-shadow: none;
    background-color: rgba(255, 255, 255, 0.1);
}

.navbar-toggler-icon {
    width: 1.25em;
    height: 1.25em;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ========================================
   MOBILE STYLES
   ======================================== */
@media (max-width: 991px) {
    .main-navbar {
        padding: 0;
    }

    .main-navbar .container {
        flex-wrap: wrap;
    }

    .logo-container img {
        height: 42px;
    }

    .navbar-collapse {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--un-blue);
        padding: 1rem;
        z-index: 1000;
        border-top: 1px solid rgba(255, 255, 255, 0.2);
        max-height: calc(100vh - 70px);
        overflow-y: auto;
    }

    .main-nav-links {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }

    .main-nav-links .nav-link {
        padding: 1rem 1rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        border-left: none;
    }

    .main-nav-links .nav-link.active {
        border-bottom-color: rgba(255, 255, 255, 0.1);
        border-left: 3px solid var(--sdg11-orange);
        background: rgba(255, 255, 255, 0.05);
    }

    .nav-right-section {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
        margin-left: 0;
        margin-top: 1rem;
        padding-top: 1rem;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

    .btn-auth-login,
    .btn-create-report {
        justify-content: center;
        padding: 0.85rem 1rem;
    }

    .user-dropdown-toggle {
        justify-content: center;
    }

    /* Mobile Dropdown */
    .dropdown-menu {
        position: static !important;
        transform: none !important;
        box-shadow: none;
        background: rgba(255, 255, 255, 0.05);
        border-radius: 0;
        margin-top: 0;
        border-top: none;
    }

    .dropdown-item {
        color: var(--nav-text-muted);
        padding: 0.75rem 1.5rem;
        border-left: none;
    }

    .dropdown-item:hover {
        background: rgba(255, 255, 255, 0.1);
        color: var(--nav-text);
        padding-left: 1.75rem;
    }

    .dropdown-item i {
        color: var(--sdg11-orange);
    }

    .dropdown-divider {
        border-color: rgba(255, 255, 255, 0.1);
    }

    .logo-right {
        display: none !important;
    }
}

@media (max-width: 576px) {
    .logo-container img {
        height: 36px;
    }

    .user-name {
        display: none;
    }

    .main-nav-links .nav-link {
        font-size: 0.85rem;
        padding: 0.9rem 1rem;
    }
}

/* ========================================
   ANIMATION UTILITIES
   ======================================== */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown-menu.show {
    animation: slideDown 0.2s ease forwards;
}

/* Active indicator animation */
.main-nav-links .nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 3px;
    background: var(--sdg11-orange);
    transition: all var(--transition-fast);
    transform: translateX(-50%);
}

.main-nav-links .nav-link:hover::before {
    width: 100%;
}

.main-nav-links .nav-link.active::before {
    width: 100%;
}