* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #218191;
    --secondary: #1a6673;
    --white: #ffffff;
    --nav-height: 80px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: #f7f9fc;
    scroll-behavior: smooth;
}

.announce-navbar {
    background-color: var(--primary);
    color: var(--white);
    padding: 8px;
    text-align: center;
    font-weight: 550;
    animation: slideInDown 0.6s ease-out;
    position: relative;
    overflow: hidden;
}

.announce-navbar::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: shine 3s infinite;
}

.announce-navbar p {
    margin: 0;
    font-size: 0.95rem;
}

.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    height: var(--nav-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: var(--transition);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 70px;
    transform-origin: left center;
    transition: var(--transition);
}

.logo:hover img {
    transform: scale(1.05);
    filter: drop-shadow(0 0 8px rgba(33, 129, 145, 0.3));
}

.nav-links {
    display: flex;
    gap: 2rem;
    margin: 0;
    padding: 0;
}

.nav-links li {
    list-style: none;
}

.nav-links a {
    color: #333;
    text-decoration: none;
    font-weight: 600;
    padding: 0.5rem 1rem;
    position: relative;
    transition: var(--transition);
}

.nav-links a::before {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary);
    transform: scaleX(0);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-links a:hover {
    color: var(--primary);
}

.nav-links a:hover::before {
    transform: scaleX(1);
}

.social-media {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.social-media a {
    position: relative;
    transition: var(--transition);
}

.social-media img {
    width: 24px;
    height: 24px;
    transition: var(--transition);
}

.social-media a:hover img {
    transform: translateY(-3px);
    filter: drop-shadow(0 4px 4px rgba(0, 0, 0, 0.2));
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 10px;
}

.hamburger .line {
    width: 30px;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

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

@keyframes shine {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

@media screen and (max-width: 1024px) {
    .container {
        padding: 0 1rem;
    }

    .nav-links {
        gap: 1rem;
    }
}

@media screen and (max-width: 950px) {
    .nav-links {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        align-items: center;
        padding: 2rem;
        gap: 1.5rem;
        box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
        transform: translateY(-10px);
        opacity: 0;
    }

    .nav-active {
        display: flex;
        animation: slideDown 0.3s forwards;
    }

    .hamburger {
        display: flex;
    }

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

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

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

    .social-media {
        gap: 1rem;
    }
}

@keyframes slideDown {
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@media screen and (max-width: 480px) {
    .logo img {
        height: 60px;
    }

    .social-media {
        gap: 0.8rem;
    }

    .social-media img {
        width: 20px;
        height: 20px;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}