/* ===== LOADING SCREEN ===== */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    text-align: center;
    color: var(--white);
}

.logo-loader {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 2rem;
    animation: pulse 2s infinite;
}

.loading-text {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 2rem;
    font-family: 'Inter', sans-serif;
}

.loading-bar {
    width: 200px;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
    overflow: hidden;
    margin: 0 auto;
}

.loading-progress {
    height: 100%;
    background: var(--white);
    border-radius: 2px;
    animation: loading 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

@keyframes loading {
    0% {
        width: 0%;
    }
    50% {
        width: 70%;
    }
    100% {
        width: 100%;
    }
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 700;
    font-size: 1.5rem;
    font-family: 'Inter', sans-serif;
    flex-shrink: 0;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.2rem;
    transition: var(--transition);
}

.logo:hover .logo-icon {
    transform: scale(1.1) rotate(5deg);
}

.logo-text {
    font-weight: 700;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
    padding: 0;
    align-items: center;
    flex: 1;
    justify-content: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0;
    position: relative;
    white-space: nowrap;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.nav-link i {
    font-size: 0.9rem;
    opacity: 0.8;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-shrink: 0;
}

.search-btn,
.mobile-menu {
    background: none;
    border: none;
    color: var(--text-dark);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
}

.search-btn:hover,
.mobile-menu:hover {
    background: var(--gray-100);
    color: var(--primary-color);
    transform: scale(1.1);
}

.mobile-menu {
    display: none;
}

/* ===== SEARCH MODAL ===== */
.search-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.search-modal.active {
    opacity: 1;
    visibility: visible;
}

.search-container {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    transform: translateY(20px);
    transition: var(--transition);
}

.search-modal.active .search-container {
    transform: translateY(0);
}

.search-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--gray-200);
}

.search-header h3 {
    color: var(--text-dark);
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
}

.close-search {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition);
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.close-search:hover {
    background: var(--gray-100);
    color: var(--text-dark);
}

.search-input-group {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.search-input-group input {
    flex: 1;
    padding: 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

.search-input-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.search-submit {
    background: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
}

.search-submit:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

.search-filters {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.search-filters select {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    background: var(--white);
    transition: var(--transition);
}

.search-filters select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.search-results {
    max-height: 300px;
    overflow-y: auto;
}

.search-result-item {
    padding: 1rem;
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius);
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.search-result-item:hover {
    background: var(--gray-50);
    border-color: var(--primary-color);
}

.search-result-item h4 {
    color: var(--text-dark);
    margin: 0 0 0.5rem 0;
    font-size: 1rem;
}

.search-result-item p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin: 0;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
    .nav-links {
        gap: 1.5rem;
    }
    
    .nav-link {
        font-size: 0.9rem;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0.75rem 20px;
    }
    
    .nav-links {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--white);
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        padding-top: 2rem;
        gap: 1rem;
        transition: left 0.3s ease;
        box-shadow: var(--shadow-lg);
        z-index: 999;
    }

    .nav-links.active {
        left: 0;
    }

    .nav-link {
        font-size: 1.1rem;
        padding: 1rem 0;
        width: 100%;
        text-align: center;
        justify-content: center;
    }

    .mobile-menu {
        display: flex;
    }

    .search-container {
        width: 95%;
        padding: 1.5rem;
    }

    .search-filters {
        flex-direction: column;
    }

    .search-filters select {
        min-width: auto;
    }
}

@media (max-width: 480px) {
    .logo-text {
        display: none;
    }

    .nav-container {
        padding: 0.75rem 15px;
    }

    .search-container {
        padding: 1rem;
    }

    .search-header h3 {
        font-size: 1.1rem;
    }
    
    .nav-actions {
        gap: 0.5rem;
    }
    
    .search-btn,
    .mobile-menu {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
}

/* ===== ANIMATIONS ===== */
@keyframes slideInDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.navbar {
    animation: slideInDown 0.5s ease;
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
    .navbar,
    .search-container,
    .nav-links {
        animation: none;
        transition: none;
    }
    
    .nav-link::after {
        transition: none;
    }
}