:root {
    --primary: #4F46E5;
    --primary-hover: #4338ca;
    --secondary: #1E293B;
    --background: #F8FAFC;
    --surface: #FFFFFF;
    --text-main: #0F172A;
    --text-muted: #64748B;
    --accent: #10B981;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--background);
    color: var(--text-main);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

/* Navbar */
nav {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    font-weight: 500;
    color: var(--text-muted);
    transition: color 0.3s ease;
}

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

.nav-link-special {
    color: var(--primary) !important;
    font-weight: 600 !important;
    margin-right: 1.5rem;
    text-decoration: none;
}

.nav-greeting {
    color: var(--secondary);
    font-weight: 600;
}

.nav-form {
    display: inline;
}

.btn {
    padding: 0.6rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    display: inline-block;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(79, 70, 229, 0.39);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
}

.btn-outline {
    border: 2px solid var(--primary);
    color: var(--primary);
    background: transparent;
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
}

.btn-sm {
    padding: 0.4rem 1rem !important;
}

/* Container */
main {
    min-height: calc(100vh - 80px);
    /* Adjust based on footer */
    padding-top: 80px;
    /* Space for fixed nav */
}

/* Footer */
footer {
    background: var(--secondary);
    color: white;
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
}

/* Alert Notifications */
.alert {
    padding: 1rem;
    margin: 1rem 5%;
    border-radius: 8px;
    font-weight: 500;
}

.alert-success {
    background: #D1FAE5;
    color: #065F46;
    border-left: 4px solid var(--accent);
}

.alert-danger {
    background: #FEE2E2;
    color: #991B1B;
    border-left: 4px solid #EF4444;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

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

.animate-fade-in {
    animation: fadeInDown 0.6s ease-out forwards;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    nav {
        padding: 1rem 5%;
        flex-direction: column;
        gap: 1rem;
        position: static;
    }

    .nav-links {
        gap: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    main {
        padding-top: 20px;
    }

    .alert {
        margin: 1rem 2%;
    }
}