/**
 * ==========================================================================
 * BAGSANDGO HEADER ANIMATIONS & TRANSITIONS
 * ==========================================================================
 * 
 * File: assets/css/header-animations.css
 * Advanced animations and micro-interactions for header
 */

/* ==========================================================================
   KEYFRAMES & ANIMATIONS
========================================================================== */

@keyframes slideInFromTop {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideOutToTop {
    from {
        transform: translateY(0);
        opacity: 1;
    }
    to {
        transform: translateY(-100%);
        opacity: 0;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}

@keyframes slideInFromRight {
    from {
        transform: translateX(100%);
    }
    to {
        transform: translateX(0);
    }
}

@keyframes slideOutToRight {
    from {
        transform: translateX(0);
    }
    to {
        transform: translateX(100%);
    }
}

@keyframes scaleIn {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes scaleOut {
    from {
        transform: scale(1);
        opacity: 1;
    }
    to {
        transform: scale(0.9);
        opacity: 0;
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(74, 144, 226, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(74, 144, 226, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(74, 144, 226, 0);
    }
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* ==========================================================================
   HEADER SCROLL ANIMATIONS
========================================================================== */

#header-main {
    transition: 
        transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
        background-color 0.3s ease,
        box-shadow 0.3s ease,
        backdrop-filter 0.3s ease;
}

#header-main.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

#header-main.hidden {
    transform: translateY(-100%);
}

/* ==========================================================================
   PROMOTIONAL BANNER ANIMATIONS
========================================================================== */

#promo-banner {
    animation: slideInFromTop 0.5s ease-out;
}

#promo-banner.hidden {
    animation: slideOutToTop 0.3s ease-in forwards;
}

.promo-content {
    overflow: hidden;
    white-space: nowrap;
}

.promo-text {
    display: inline-block;
    animation: marquee 20s linear infinite;
}

@keyframes marquee {
    0% {
        transform: translateX(100%);
    }
    100% {
        transform: translateX(-100%);
    }
}

/* Pause animation on hover */
.promo-content:hover .promo-text {
    animation-play-state: paused;
}

.promo-close {
    transition: all 0.2s ease;
}

.promo-close:hover {
    transform: scale(1.1);
    background-color: rgba(255, 255, 255, 0.2);
}

/* ==========================================================================
   NAVIGATION DROPDOWN ANIMATIONS
========================================================================== */

.nav-dropdown {
    transform: translateY(-10px);
    opacity: 0;
    visibility: hidden;
    transition: 
        transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
        opacity 0.3s ease,
        visibility 0.3s ease;
}

.nav-item.has-dropdown.open .nav-dropdown {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.nav-dropdown .dropdown-item {
    transform: translateY(10px);
    opacity: 0;
    transition: 
        transform 0.2s ease,
        opacity 0.2s ease,
        background-color 0.2s ease;
}

.nav-item.has-dropdown.open .nav-dropdown .dropdown-item {
    transform: translateY(0);
    opacity: 1;
}

/* Staggered animation for dropdown items */
.nav-item.has-dropdown.open .nav-dropdown .dropdown-item:nth-child(1) {
    transition-delay: 0.05s;
}

.nav-item.has-dropdown.open .nav-dropdown .dropdown-item:nth-child(2) {
    transition-delay: 0.1s;
}

.nav-item.has-dropdown.open .nav-dropdown .dropdown-item:nth-child(3) {
    transition-delay: 0.15s;
}

.nav-item.has-dropdown.open .nav-dropdown .dropdown-item:nth-child(4) {
    transition-delay: 0.2s;
}

.nav-item.has-dropdown.open .nav-dropdown .dropdown-item:nth-child(5) {
    transition-delay: 0.25s;
}

.nav-item.has-dropdown.open .nav-dropdown .dropdown-item:nth-child(6) {
    transition-delay: 0.3s;
}

/* Mega menu special effects */
.mega-menu {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.95));
}

.mega-menu::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(74, 144, 226, 0.1),
        transparent
    );
    transition: left 0.5s ease;
}

.nav-item.has-dropdown.open .mega-menu::before {
    left: 100%;
}

/* ==========================================================================
   MOBILE MENU ANIMATIONS
========================================================================== */

#mobile-menu {
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

#mobile-menu-overlay {
    opacity: 0;
    visibility: hidden;
    transition: 
        opacity 0.3s ease,
        visibility 0.3s ease;
}

#mobile-menu-overlay.open {
    opacity: 1;
    visibility: visible;
}

.mobile-nav-item {
    transform: translateX(50px);
    opacity: 0;
    transition: 
        transform 0.3s ease,
        opacity 0.3s ease;
}

#mobile-menu.open .mobile-nav-item {
    transform: translateX(0);
    opacity: 1;
}

/* Staggered mobile menu items */
#mobile-menu.open .mobile-nav-item:nth-child(1) {
    transition-delay: 0.1s;
}

#mobile-menu.open .mobile-nav-item:nth-child(2) {
    transition-delay: 0.15s;
}

#mobile-menu.open .mobile-nav-item:nth-child(3) {
    transition-delay: 0.2s;
}

#mobile-menu.open .mobile-nav-item:nth-child(4) {
    transition-delay: 0.25s;
}

#mobile-menu.open .mobile-nav-item:nth-child(5) {
    transition-delay: 0.3s;
}

#mobile-menu.open .mobile-nav-item:nth-child(6) {
    transition-delay: 0.35s;
}

/* Mobile menu toggle animation */
#mobile-menu-toggle {
    transition: transform 0.2s ease;
}

#mobile-menu-toggle:hover {
    transform: scale(1.1);
}

#mobile-menu-toggle.active {
    transform: rotate(90deg);
}

/* Hamburger to X animation */
.hamburger-line {
    transition: all 0.3s ease;
    transform-origin: center;
}

#mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translateY(8px);
}

#mobile-menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

#mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translateY(-8px);
}

/* ==========================================================================
   CTA BUTTON ANIMATIONS
========================================================================== */

.cta-primary,
.cta-secondary {
    position: relative;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}


.cta-primary:hover::before,
.cta-secondary:hover::before {
    width: 300px;
    height: 300px;
}

.cta-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(74, 144, 226, 0.3);
}

.cta-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

/* ==========================================================================
   LOGO ANIMATIONS
========================================================================== */

.site-logo {
    transition: transform 0.3s ease;
}

.site-logo:hover {
    transform: scale(1.05);
}

.site-logo img {
    transition: filter 0.3s ease;
}

#header-main.scrolled .site-logo img {
    filter: brightness(0.9);
}

/* ==========================================================================
   LANGUAGE SWITCHER ANIMATIONS
========================================================================== */

.language-switcher {
    transition: all 0.2s ease;
}

.language-switcher:hover {
    background: rgba(74, 144, 226, 0.1);
    color: var(--primary-color);
}

.language-switcher::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.language-switcher:hover::after {
    width: 100%;
}

/* ==========================================================================
   LOADING STATES & SKELETON ANIMATIONS
========================================================================== */

.skeleton {
    background: linear-gradient(
        90deg,
        #f0f0f0 25%,
        #e0e0e0 50%,
        #f0f0f0 75%
    );
    background-size: 200% 100%;
    animation: shimmer 2s infinite;
}

.loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ==========================================================================
   FOCUS & ACCESSIBILITY ANIMATIONS
========================================================================== */

.nav-link:focus,
.cta-primary:focus,
.cta-secondary:focus,
#mobile-menu-toggle:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    animation: pulse 2s infinite;
}

/* Skip link animation */
.skip-link:focus {
    animation: slideInFromTop 0.3s ease-out;
}

/* ==========================================================================
   SCROLL INDICATOR
========================================================================== */

.scroll-indicator {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    z-index: 9999;
    transition: width 0.1s ease;
}

/* ==========================================================================
   HOVER EFFECTS & MICRO-INTERACTIONS
========================================================================== */

.interactive-element {
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.interactive-element:hover {
    transform: translateY(-2px);
}

/* Ripple effect */
.ripple {
    position: relative;
    overflow: hidden;
}

.ripple::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.ripple:active::after {
    width: 300px;
    height: 300px;
}

/* ==========================================================================
   RESPONSIVE ANIMATION OPTIMIZATIONS
========================================================================== */

/* Reduce animations on mobile for performance */
@media (max-width: 768px) {
    .promo-text {
        animation-duration: 15s;
    }
    
    .nav-dropdown .dropdown-item {
        transition-duration: 0.1s;
    }
    
    .mobile-nav-item {
        transition-duration: 0.2s;
    }
}

/* Respect user preference for reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .promo-text {
        animation: none;
    }
}

/* ==========================================================================
   DARK MODE ANIMATIONS (FUTURE)
========================================================================== */

@media (prefers-color-scheme: dark) {
    .skeleton {
        background: linear-gradient(
            90deg,
            #2a2a2a 25%,
            #1a1a1a 50%,
            #2a2a2a 75%
        );
        background-size: 200% 100%;
        animation: shimmer 2s infinite;
    }
}