/**
 * Enhanced Navigation Bar - Binance Pro Style
 * UI/UX Pro Max - Rich Animations & Interactions
 */

/* ============================================
   CSS Variables
   ============================================ */
:root {
    --nav-height: 56px;
    --nav-bg: #181A20;
    --nav-bg-hover: rgba(255, 255, 255, 0.05);
    --nav-bg-active: rgba(240, 185, 11, 0.1);
    --nav-text: #EAECEF;
    --nav-text-muted: #848E9C;
    --nav-text-hover: #FFFFFF;
    --nav-accent: #F0B90B;
    --nav-accent-glow: rgba(240, 185, 11, 0.3);
    --nav-border: #2B3139;
    --nav-dropdown-bg: #1E2329;
    --nav-shadow: 0 2px 16px rgba(0, 0, 0, 0.4);
    --nav-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    
    /* Animation timings */
    --nav-transition-fast: 150ms;
    --nav-transition-normal: 250ms;
    --nav-transition-slow: 350ms;
    --nav-ease: cubic-bezier(0.4, 0, 0.2, 1);
    --nav-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ============================================
   Base Navbar Styles
   ============================================ */
.binance-exact .custom-navbar {
    background: var(--nav-bg) !important;
    height: var(--nav-height) !important;
    min-height: var(--nav-height) !important;
    padding: 0 20px !important;
    border-bottom: 1px solid var(--nav-border) !important;
    box-shadow: var(--nav-shadow) !important;
    position: sticky !important;
    top: 0 !important;
    z-index: 1000 !important;
    transition: all var(--nav-transition-normal) var(--nav-ease) !important;
    backdrop-filter: blur(10px) !important;
    -webkit-backdrop-filter: blur(10px) !important;
}

/* Navbar Container */
.binance-exact .custom-navbar .container-fluid {
    max-width: 100% !important;
    height: 100% !important;
    display: flex !important;
    align-items: center !important;
    padding: 0 !important;
}

/* ============================================
   Brand Logo - Animated
   ============================================ */
.binance-exact .navbar-brand {
    display: flex !important;
    align-items: center !important;
    gap: 10px !important;
    padding: 8px 16px 8px 0 !important;
    margin-right: 24px !important;
    text-decoration: none !important;
    position: relative !important;
    transition: all var(--nav-transition-normal) var(--nav-ease) !important;
}

.binance-exact .navbar-brand:hover {
    transform: scale(1.02) !important;
}

.binance-exact .navbar-brand-logo {
    height: 32px !important;
    width: auto !important;
    transition: all var(--nav-transition-normal) var(--nav-ease) !important;
    filter: drop-shadow(0 0 8px var(--nav-accent-glow)) !important;
}

.binance-exact .navbar-brand:hover .navbar-brand-logo {
    filter: drop-shadow(0 0 16px var(--nav-accent-glow)) brightness(1.1) !important;
    transform: rotate(-5deg) scale(1.05) !important;
}

.binance-exact .navbar-brand span {
    font-size: 1.25rem !important;
    font-weight: 700 !important;
    color: var(--nav-accent) !important;
    letter-spacing: -0.5px !important;
    transition: all var(--nav-transition-normal) var(--nav-ease) !important;
}

.binance-exact .navbar-brand:hover span {
    text-shadow: 0 0 20px var(--nav-accent-glow) !important;
}

/* ============================================
   Navigation Links
   ============================================ */
.binance-exact .navbar-nav {
    display: flex !important;
    align-items: center !important;
    gap: 4px !important;
    height: 100% !important;
}

.binance-exact .nav-item {
    height: 100% !important;
    display: flex !important;
    align-items: center !important;
    position: relative !important;
}

.binance-exact .nav-link {
    color: var(--nav-text-muted) !important;
    font-size: 14px !important;
    font-weight: 500 !important;
    padding: 8px 16px !important;
    border-radius: 8px !important;
    text-decoration: none !important;
    display: flex !important;
    align-items: center !important;
    gap: 6px !important;
    position: relative !important;
    overflow: hidden !important;
    transition: all var(--nav-transition-normal) var(--nav-ease) !important;
}

/* Hover State */
.binance-exact .nav-link:hover {
    color: var(--nav-text-hover) !important;
    background: var(--nav-bg-hover) !important;
}

/* Active State */
.binance-exact .nav-link.active {
    color: var(--nav-accent) !important;
    background: var(--nav-bg-active) !important;
}

/* Active Indicator - Animated Line */
.binance-exact .nav-link.active::after {
    content: '' !important;
    position: absolute !important;
    bottom: -2px !important;
    left: 50% !important;
    transform: translateX(-50%) !important;
    width: 60% !important;
    height: 2px !important;
    background: linear-gradient(90deg, transparent, var(--nav-accent), transparent) !important;
    border-radius: 2px !important;
    animation: activeGlow 2s ease infinite !important;
}

@keyframes activeGlow {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ============================================
   Click Ripple Effect
   ============================================ */
.binance-exact .nav-link::before {
    content: '' !important;
    position: absolute !important;
    top: 50% !important;
    left: 50% !important;
    width: 0 !important;
    height: 0 !important;
    background: radial-gradient(circle, var(--nav-accent-glow) 0%, transparent 70%) !important;
    border-radius: 50% !important;
    transform: translate(-50%, -50%) !important;
    transition: width 0.5s ease, height 0.5s ease, opacity 0.5s ease !important;
    opacity: 0 !important;
    pointer-events: none !important;
}

.binance-exact .nav-link:active::before {
    width: 200px !important;
    height: 200px !important;
    opacity: 1 !important;
    transition: width 0s, height 0s, opacity 0s !important;
}

/* ============================================
   Dropdown Menu - Enhanced
   ============================================ */
.binance-exact .dropdown-toggle {
    cursor: pointer !important;
}

.binance-exact .dropdown-toggle .caret,
.binance-exact .dropdown-toggle i.feather-chevron-down {
    font-size: 12px !important;
    transition: transform var(--nav-transition-normal) var(--nav-bounce) !important;
}

.binance-exact .dropdown:hover .dropdown-toggle .caret,
.binance-exact .dropdown:hover .dropdown-toggle i.feather-chevron-down,
.binance-exact .dropdown.show .dropdown-toggle .caret,
.binance-exact .dropdown.show .dropdown-toggle i.feather-chevron-down {
    transform: rotate(180deg) !important;
}

/* Dropdown Menu Container */
.binance-exact .dropdown-menu {
    background: var(--nav-dropdown-bg) !important;
    border: 1px solid var(--nav-border) !important;
    border-radius: 12px !important;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5) !important;
    padding: 8px !important;
    min-width: 200px !important;
    margin-top: 8px !important;
    
    /* Animation */
    opacity: 0 !important;
    visibility: hidden !important;
    transform: translateY(-10px) scale(0.95) !important;
    transform-origin: top center !important;
    transition: all var(--nav-transition-normal) var(--nav-bounce) !important;
}

.binance-exact .dropdown:hover .dropdown-menu,
.binance-exact .dropdown-menu.show {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0) scale(1) !important;
}

/* Dropdown Items */
.binance-exact .dropdown-item {
    color: var(--nav-text-muted) !important;
    padding: 10px 16px !important;
    border-radius: 8px !important;
    font-size: 14px !important;
    transition: all var(--nav-transition-fast) var(--nav-ease) !important;
    position: relative !important;
    overflow: hidden !important;
}

.binance-exact .dropdown-item:hover {
    color: var(--nav-text-hover) !important;
    background: var(--nav-bg-hover) !important;
    padding-left: 20px !important;
}

/* Dropdown item hover indicator */
.binance-exact .dropdown-item::before {
    content: '' !important;
    position: absolute !important;
    left: 0 !important;
    top: 50% !important;
    transform: translateY(-50%) !important;
    width: 3px !important;
    height: 0 !important;
    background: var(--nav-accent) !important;
    border-radius: 0 2px 2px 0 !important;
    transition: height var(--nav-transition-fast) var(--nav-ease) !important;
}

.binance-exact .dropdown-item:hover::before {
    height: 60% !important;
}

/* Dropdown divider */
.binance-exact .dropdown-divider {
    border-color: var(--nav-border) !important;
    margin: 8px 0 !important;
}

/* ============================================
   Right Side Actions
   ============================================ */
.binance-exact .navbar-nav:last-child {
    margin-left: auto !important;
}

/* Language Selector */
.binance-exact .nav-link[data-bs-target="#languaheModal"] {
    background: var(--nav-bg-hover) !important;
    border-radius: 8px !important;
}

/* Login/Logout Button */
.binance-exact .nav-link i.feather-log-in,
.binance-exact .nav-link i.feather-log-out {
    font-size: 16px !important;
    transition: transform var(--nav-transition-normal) var(--nav-ease) !important;
}

.binance-exact .nav-link:hover i.feather-log-in,
.binance-exact .nav-link:hover i.feather-log-out {
    transform: translateX(3px) !important;
}

/* ============================================
   Register Button - Premium Style
   ============================================ */
.binance-exact .btn-register {
    background: linear-gradient(135deg, var(--nav-accent), #FFD700) !important;
    color: #000 !important;
    font-weight: 600 !important;
    font-size: 14px !important;
    padding: 10px 20px !important;
    border-radius: 8px !important;
    border: none !important;
    text-decoration: none !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 6px !important;
    position: relative !important;
    overflow: hidden !important;
    transition: all var(--nav-transition-normal) var(--nav-ease) !important;
    box-shadow: 0 4px 15px rgba(240, 185, 11, 0.3) !important;
}

.binance-exact .btn-register:hover {
    background: linear-gradient(135deg, #FFD700, var(--nav-accent)) !important;
    transform: translateY(-2px) !important;
    box-shadow: 0 6px 25px rgba(240, 185, 11, 0.5) !important;
}

.binance-exact .btn-register:active {
    transform: translateY(0) scale(0.98) !important;
}

/* Shine effect on hover */
.binance-exact .btn-register::after {
    content: '' !important;
    position: absolute !important;
    top: 0 !important;
    left: -100% !important;
    width: 100% !important;
    height: 100% !important;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.4),
        transparent
    ) !important;
    transition: left 0.5s ease !important;
}

.binance-exact .btn-register:hover::after {
    left: 100% !important;
}

/* ============================================
   Mobile Toggle Button
   ============================================ */
.binance-exact .navbar-toggler {
    background: var(--nav-bg-hover) !important;
    border: 1px solid var(--nav-border) !important;
    border-radius: 8px !important;
    padding: 8px 12px !important;
    color: var(--nav-text) !important;
    transition: all var(--nav-transition-normal) var(--nav-ease) !important;
}

.binance-exact .navbar-toggler:hover {
    background: var(--nav-bg-active) !important;
    border-color: var(--nav-accent) !important;
}

.binance-exact .navbar-toggler:focus {
    box-shadow: 0 0 0 3px var(--nav-accent-glow) !important;
}

.binance-exact .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='%23EAECEF' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
}

/* ============================================
   Scroll State - Compact Navbar
   ============================================ */
.binance-exact .custom-navbar.scrolled {
    height: 48px !important;
    min-height: 48px !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5) !important;
}

.binance-exact .custom-navbar.scrolled .navbar-brand-logo {
    height: 28px !important;
}

.binance-exact .custom-navbar.scrolled .nav-link {
    padding: 6px 12px !important;
    font-size: 13px !important;
}

/* ============================================
   Notification Badge (Future Feature)
   ============================================ */
.binance-exact .nav-badge {
    position: absolute !important;
    top: 4px !important;
    right: 4px !important;
    background: #F6465D !important;
    color: #fff !important;
    font-size: 10px !important;
    font-weight: 600 !important;
    min-width: 18px !important;
    height: 18px !important;
    border-radius: 9px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 0 5px !important;
    animation: badgePulse 2s ease infinite !important;
}

@keyframes badgePulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* ============================================
   Icon Animations
   ============================================ */
.binance-exact .nav-link i,
.binance-exact .dropdown-item i {
    transition: all var(--nav-transition-normal) var(--nav-ease) !important;
}

.binance-exact .nav-link:hover i {
    color: var(--nav-accent) !important;
}

/* ============================================
   Loading State Animation
   ============================================ */
.binance-exact .nav-link.loading {
    pointer-events: none !important;
}

.binance-exact .nav-link.loading::after {
    content: '' !important;
    position: absolute !important;
    width: 16px !important;
    height: 16px !important;
    border: 2px solid transparent !important;
    border-top-color: var(--nav-accent) !important;
    border-radius: 50% !important;
    animation: spin 0.8s linear infinite !important;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ============================================
   Responsive Styles
   ============================================ */
@media (max-width: 991px) {
    .binance-exact .navbar-collapse {
        position: fixed !important;
        top: var(--nav-height) !important;
        left: 0 !important;
        right: 0 !important;
        bottom: 0 !important;
        background: var(--nav-bg) !important;
        padding: 20px !important;
        overflow-y: auto !important;
        
        /* Slide animation */
        transform: translateX(-100%) !important;
        opacity: 0 !important;
        transition: all var(--nav-transition-slow) var(--nav-ease) !important;
    }
    
    .binance-exact .navbar-collapse.show {
        transform: translateX(0) !important;
        opacity: 1 !important;
    }
    
    .binance-exact .navbar-nav {
        flex-direction: column !important;
        gap: 8px !important;
    }
    
    .binance-exact .nav-item {
        width: 100% !important;
        height: auto !important;
    }
    
    .binance-exact .nav-link {
        width: 100% !important;
        padding: 14px 16px !important;
        font-size: 16px !important;
    }
    
    .binance-exact .dropdown-menu {
        position: static !important;
        width: 100% !important;
        margin: 8px 0 !important;
        box-shadow: none !important;
        border: none !important;
        background: rgba(255, 255, 255, 0.02) !important;
    }
}

/* ============================================
   Accessibility - Focus States
   ============================================ */
.binance-exact .nav-link:focus-visible,
.binance-exact .dropdown-item:focus-visible,
.binance-exact .btn-register:focus-visible {
    outline: 2px solid var(--nav-accent) !important;
    outline-offset: 2px !important;
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .binance-exact .custom-navbar {
        display: none !important;
    }
}