/* ========================================
   NAVIGATION HEADER STRIP
   ======================================== */

.nav-header {
    background: #ffffff;
    border-bottom: 1px solid #e5e7eb;
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    height: 60px;
}

/* Logo - Dynamic & Interactive */
.nav-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    font-size: 18px;
    font-weight: 700;
    color: #1f2937;
    gap: 12px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
}

.nav-logo span {
    opacity: 0;
    transform: translateX(-20px);
}

.nav-logo:hover {
    transform: translateY(-2px);
    color: #ef4444;
}

.nav-logo::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #ef4444, #dc2626);
    transition: width 0.3s ease;
}

.nav-logo:hover::after {
    width: 100%;
}

.nav-logo img {
    height: 24px;
    display: block;
    transition: transform 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.nav-logo:hover img {
    transform: rotate(360deg) scale(1.1);
    filter: drop-shadow(0 4px 8px rgba(239, 68, 68, 0.3));
}

.nav-logo:active {
    transform: scale(0.95);
}

.nav-logo span {
    font-weight: 700;
    transition: color 0.3s ease;
}

/* Title Adjustment Animation - Enhanced */
@keyframes titleAdjust {
    0% {
        transform: translateX(-50px) scale(0.8);
        opacity: 0;
        color: transparent;
        filter: blur(4px);
    }

    15% {
        transform: translateX(30px) scale(1.3);
        opacity: 0.6;
        color: #2563eb;
        filter: blur(2px) drop-shadow(0 0 10px rgba(37, 99, 235, 0.5));
    }

    30% {
        transform: translateX(-15px) scale(0.9);
        opacity: 0.8;
        color: #10b981;
        filter: blur(1px) drop-shadow(0 0 8px rgba(16, 185, 129, 0.5));
    }

    50% {
        transform: translateX(10px) scale(1.15);
        opacity: 0.9;
        color: #ef4444;
        filter: blur(0px) drop-shadow(0 0 12px rgba(239, 68, 68, 0.6));
    }

    70% {
        transform: translateX(-5px) scale(1.05);
        opacity: 1;
        color: #2563eb;
        filter: drop-shadow(0 0 6px rgba(37, 99, 235, 0.4));
    }

    85% {
        transform: translateX(2px) scale(0.98);
        opacity: 1;
        color: #1f2937;
        filter: drop-shadow(0 0 3px rgba(31, 41, 55, 0.2));
    }

    100% {
        transform: translateX(0) scale(1);
        opacity: 1;
        color: #1f2937;
        filter: none;
    }
}

.nav-logo span.adjusting {
    animation: titleAdjust 1.2s cubic-bezier(0.68, -0.55, 0.265, 1.55) forwards;
}

/* Main Navigation */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
    flex: 1;
    margin-left: 48px;
}

.nav-item {
    position: relative;
    text-decoration: none;
    color: #4b5563;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    padding: 20px 0;
    transition: color 0.2s;
    cursor: pointer;
    white-space: nowrap;
}

.nav-item:hover {
    color: #ef4444;
}

.nav-item.has-dropdown::after {
    content: '▼';
    font-size: 10px;
    margin-left: 6px;
    opacity: 0.7;
}

/* Dropdown */
.nav-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    min-width: 220px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
    margin-top: 8px;
    padding: 8px 0;
}

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

.dropdown-item {
    display: block;
    padding: 12px 20px;
    color: #4b5563;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    text-transform: none;
    letter-spacing: normal;
    transition: all 0.2s;
}

.dropdown-item:hover {
    background: #f9fafb;
    color: #ef4444;
    padding-left: 24px;
}

/* Actions */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-login {
    color: #4b5563;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    padding: 8px 16px;
    transition: color 0.2s;
}

.nav-login:hover {
    color: #ef4444;
}

.nav-signup {
    background: #ef4444;
    color: white;
    text-decoration: none;
    font-size: 14px;
    font-weight: 700;
    padding: 10px 24px;
    border-radius: 6px;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
}

.nav-signup:hover {
    background: #dc2626;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

.nav-menu-icon {
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    display: none;
    padding: 0;
    color: #4b5563;
}

.nav-menu-icon svg {
    width: 24px;
    height: 24px;
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    bottom: 0;
    background: white;
    z-index: 999;
    overflow-y: auto;
    padding: 20px;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

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

.mobile-nav-item {
    display: block;
    padding: 16px 0;
    color: #4b5563;
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
    border-bottom: 1px solid #f3f4f6;
}

.mobile-nav-item:hover {
    color: #ef4444;
}

/* Dark Mode Support */
.dark-mode .nav-header {
    background: #1f2937;
    border-bottom-color: #374151;
}

.dark-mode .nav-logo,
.dark-mode .nav-item,
.dark-mode .nav-login {
    color: #f3f4f6;
}

.dark-mode .nav-dropdown {
    background: #1f2937;
    border-color: #374151;
}

.dark-mode .dropdown-item {
    color: #d1d5db;
}

.dark-mode .dropdown-item:hover {
    background: #374151;
}

/* Responsive */
@media (max-width: 968px) {
    .nav-menu {
        display: none;
    }

    .nav-menu-icon {
        display: block;
    }

    .mobile-menu {
        display: block;
    }

    .nav-actions {
        gap: 12px;
    }

    .nav-login,
    .nav-signup {
        font-size: 13px;
        padding: 8px 16px;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 16px;
    }

    .nav-logo {
        font-size: 20px;
    }

    .nav-login {
        display: none;
    }
}