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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
}

/* Navigation */
.navbar {
    background-color: #0a2647;
    padding: 1rem 0;
    position: relative;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 50px;
    width: auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    color: #ffffff;
    text-decoration: none;
    font-size: 1rem;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: #64b5f6;
}

.signin-btn {
    background-color: #1976d2;
    padding: 0.5rem 1.5rem;
    border-radius: 5px;
}

.signin-btn:hover {
    background-color: #1565c0;
}

.register-btn {
    background-color: #4caf50;
    padding: 0.5rem 1.5rem;
    border-radius: 5px;
    color: #ffffff !important;
}

.register-btn:hover {
    background-color: #388e3c;
    color: #ffffff !important;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: #ffffff;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #e3f2fd 0%, #f5f5f5 100%);
    padding: 3rem 2rem 4rem;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    color: #0a2647;
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-content p {
    color: #546e7a;
    font-size: 1.1rem;
    line-height: 1.8;
}

.hero-badge {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-badge img {
    max-width: 100%;
    height: auto;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.2));
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: #0a2647;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        padding: 2rem 0;
    }

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

    .hero-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-badge {
        order: -1;
    }
}

/* Footer */
.footer {
    background: linear-gradient(135deg, #0a2647 0%, #1565c0 100%);
    color: #ffffff;
    padding: 2.5rem 2rem;
    margin-top: 0;
    border-top: 4px solid #1976d2;
}

.footer-content {
    max-width: 1100px;
    margin: 0 auto;
    text-align: center;
}

.footer-section {
    margin-bottom: 1.5rem;
}

.footer-motto {
    font-size: 1rem;
    font-weight: 600;
    color: #ffa726;
    margin-bottom: 0.8rem;
    font-style: italic;
}

.footer-copyright {
    font-size: 0.95rem;
    color: #e3f2fd;
    margin: 0;
}

.footer-credits {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 1.5rem;
}

.credits-text {
    font-size: 0.95rem;
    color: #ffffff;
    margin-bottom: 0.5rem;
}

.credits-text .heart {
    color: #ff5252;
    display: inline-block;
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    10%, 30% { transform: scale(1.1); }
    20%, 40% { transform: scale(1); }
}

.credits-text strong {
    color: #ffa726;
    font-weight: 700;
}

.credits-text a {
    color: #90caf9;
    text-decoration: none;
    transition: color 0.3s ease;
}

.credits-text a:hover {
    color: #ffffff;
    text-decoration: underline;
}

.credits-note {
    font-size: 0.85rem;
    color: #b3e5fc;
    margin: 0;
}

.credits-note .year {
    font-weight: 600;
    color: #ffa726;
}