/* =====================================
   HEADER
===================================== */

.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;

    background: var(--bg-secondary) !important;

    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);

    border-bottom: 1px solid var(--card-border);

    padding: 0.75rem 0;
}

.navbar-brand {
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: .3px;
}

.navbar-nav {
    gap: 4px;
}

.navbar-nav .nav-link {
    padding: .55rem .90rem !important;

    border-radius: 10px;

    transition: all .2s ease;
}

.navbar-nav .nav-link:hover {
    background: var(--active-hover-bg) !important;
    color: var(--active-text) !important;
}

.navbar-nav .nav-link.active {
    background: var(--active-bg) !important;
    color: var(--active-text) !important;
    border: 1px solid var(--active-border) !important;
}

.navbar-toggler {
    border: none !important;
    padding: 0.35rem 0.5rem !important;
    background: transparent !important;
    outline: none !important;
    box-shadow: none !important;
}

.navbar-toggler:focus {
    box-shadow: none !important;
    outline: none !important;
}

.text-white-50 strong {
    color: #fff;
}

[data-theme="light"] .text-white-50 strong {
    color: var(--text-main);
}

[data-theme="light"] .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%2815, 23, 42, 0.75%29' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
}

.navbar form {
    margin-left: 12px;
}

.navbar .btn-secondary {
    min-width: 90px;
}

@media (max-width: 991px) {
    .navbar {
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
    }
}

/* Profile Avatar Icon & Dropdown Styles */
.profile-avatar-circle {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--accent-gradient);
    color: #ffffff !important; /* Always white text on gradient */
    font-weight: 700;
    font-family: var(--font-heading);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.05rem;
    box-shadow: 0 2px 8px rgba(6, 182, 212, 0.2);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    user-select: none;
}

.profile-avatar-circle:hover,
.profile-avatar-circle[aria-expanded="true"] {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(6, 182, 212, 0.35);
}

/* Unified Dropdown Menu styles */
.navbar .dropdown-menu,
.mobile-bottom-nav .dropdown-menu {
    background-color: var(--dropdown-bg) !important;
    border-radius: 12px !important;
    box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.08), 0 2px 8px -1px rgba(15, 23, 42, 0.04);
    padding: 0.5rem;
    border: 1px solid var(--card-border) !important;
}

[data-theme="dark"] .navbar .dropdown-menu,
[data-theme="dark"] .mobile-bottom-nav .dropdown-menu {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

[data-theme="light"] .navbar .dropdown-menu,
[data-theme="light"] .mobile-bottom-nav .dropdown-menu {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

/* Text and item colors inside dropdown menu */
.navbar .dropdown-menu .dropdown-item,
.mobile-bottom-nav .dropdown-menu .dropdown-item {
    color: var(--text-main) !important;
    border-radius: 8px;
    transition: background-color 0.2s, color 0.2s;
}

.navbar .dropdown-menu .dropdown-item:hover,
.mobile-bottom-nav .dropdown-menu .dropdown-item:hover {
    background-color: var(--dropdown-hover-bg) !important;
    color: var(--text-main) !important;
}

.navbar .dropdown-menu .dropdown-divider,
.mobile-bottom-nav .dropdown-menu .dropdown-divider {
    border-color: var(--card-border) !important;
}

/* Hover dropdown support on desktop */
@media (min-width: 992px) {
    .navbar .dropdown:hover .dropdown-menu {
        display: block;
        margin-top: 0 !important;
    }
    .navbar .dropdown-menu-end,
    .navbar .dropdown-menu-lg-end {
        right: 0 !important;
        left: auto !important;
    }
    /* Transparent bridge to prevent losing hover focus */
    .navbar .dropdown-menu::before {
        content: '';
        position: absolute;
        top: -12px;
        left: 0;
        width: 100%;
        height: 12px;
        background: transparent;
    }
}

/* ==========================================================================
   Mobile Side Navigation Drawer & Backdrop
   ========================================================================== */

@media (max-width: 991px) {
    .navbar-collapse {
        position: fixed !important;
        top: 0 !important;
        left: -280px !important; /* Start offscreen on left */
        width: 280px !important;
        height: 100vh !important;
        background-color: var(--bg-secondary) !important;
        border-right: 1px solid var(--card-border) !important;
        z-index: 10500 !important;
        padding: 24px 20px !important;
        margin: 0 !important;
        box-shadow: 10px 0 30px rgba(0, 0, 0, 0.25) !important;
        transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.3s !important;
        overflow-y: auto !important;
        display: block !important; /* Keep block display but hidden offscreen */
        visibility: hidden !important;
    }

    .navbar-collapse.show {
        left: 0 !important; /* Slide in drawer */
        visibility: visible !important;
    }

    /* Style the list elements inside the mobile drawer */
    .navbar-nav {
        gap: 12px !important;
        margin-top: 20px;
    }

    .navbar-nav .nav-link {
        font-size: 0.9rem !important;
        padding: 0.75rem 1rem !important;
        border: 1px solid transparent !important;
    }

    .navbar-nav .dropdown-menu {
        position: static !important;
        float: none !important;
        background-color: transparent !important;
        box-shadow: none !important;
        border: none !important;
        border-left: 2px solid var(--card-border) !important;
        border-radius: 0 !important;
        padding: 0 0 0 16px !important;
        margin: 8px 0 0 8px !important;
    }

    .navbar-nav .dropdown-item {
        font-size: 0.85rem !important;
        padding: 0.5rem 0.75rem !important;
    }
}

/* Sidebar Drawer Backdrop Overlay */
.drawer-backdrop {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    background: rgba(0, 0, 0, 0.4) !important;
    backdrop-filter: blur(4px) !important;
    -webkit-backdrop-filter: blur(4px) !important;
    z-index: 10450 !important; /* Just below side drawer */
    opacity: 0 !important;
    visibility: hidden !important;
    transition: opacity 0.3s ease, visibility 0.3s ease !important;
}

body.drawer-open .drawer-backdrop {
    opacity: 1 !important;
    visibility: visible !important;
}

body.drawer-open {
    overflow: hidden !important; /* Disable scrolling behind drawer */
}

/* ==========================================================================
   Mobile Bottom Navigation Bar
   ========================================================================== */

/* Hidden on desktop by default */
.mobile-bottom-nav {
    display: none !important;
}

@media (max-width: 991px) {
    .mobile-bottom-nav {
        display: flex !important;
        position: fixed !important;
        bottom: 0 !important;
        left: 0 !important;
        right: 0 !important;
        width: 100% !important;
        height: 64px !important;
        /* Bezel-less phone support */
        padding-bottom: env(safe-area-inset-bottom) !important;
        height: calc(64px + env(safe-area-inset-bottom)) !important;
        background: rgba(16, 18, 22, 0.9) !important;
        backdrop-filter: blur(20px) !important;
        -webkit-backdrop-filter: blur(20px) !important;
        border-top: 1px solid var(--card-border) !important;
        z-index: 10400 !important; /* Floating above page content but below sidebar drawer */
        padding: 0 10px !important;
        box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15) !important;
    }

    [data-theme="light"] .mobile-bottom-nav {
        background: rgba(255, 255, 255, 0.9) !important;
        box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.05) !important;
    }

    /* Adjust main content offset for bottom navigation height + safe areas */
    body.has-bottom-nav .main-content {
        padding-bottom: calc(64px + env(safe-area-inset-bottom) + 2rem) !important;
    }

    body {
        padding-bottom: 0 !important;
    }
}

.mobile-bottom-nav-container {
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: 100%;
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
}

.mobile-bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none !important;
    color: var(--text-muted) !important;
    font-size: 0.72rem;
    font-weight: 600;
    width: 20%;
    height: 100%;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.mobile-bottom-nav-icon {
    font-size: 1.2rem;
    margin-bottom: 2px;
    transition: transform 0.2s ease;
}

.mobile-bottom-nav-label {
    font-size: 0.68rem;
    font-weight: 700;
}

/* Active tab state */
.mobile-bottom-nav-item.active {
    color: var(--accent-cyan) !important;
}

.mobile-bottom-nav-item.active .mobile-bottom-nav-icon {
    transform: translateY(-2px);
}

/* Active tab dot indicator */
.mobile-bottom-nav-item.active::after {
    content: '';
    position: absolute;
    bottom: 4px;
    width: 4px;
    height: 4px;
    background-color: var(--accent-cyan);
    border-radius: 50%;
}