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

body {
    font-family: var(--font-main);
    background-color: var(--color-bg);
    color: var(--color-text);
    font-size: 16px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Topbar */
.topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--topbar-height);
    background-color: var(--color-primary-nav);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1rem;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.topbar-logo {
    height: 58px;
    width: auto;
    filter: brightness(0) invert(1);
}

.topbar-link {
    color: #c5d3f0;
    font-size: 0.8rem;
    text-decoration: none;
    transition: color var(--transition);
}

    .topbar-link:hover {
        color: var(--color-white);
    }

.topbar-title {
    color: var(--color-white);
    font-size: 0.9rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 180px;
}

/* Page content */
.page-content {
    padding-top: var(--topbar-height);
    min-height: 100vh;
}

/* Contenedor general */
.container-ndp {
    max-width: 900px;
    margin: 0 auto;
    padding: 1rem;
}

/* Botones base */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1.25rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color var(--transition), transform var(--transition);
    text-decoration: none;
}

    .btn:active {
        transform: scale(0.97);
    }

    .btn:disabled {
        opacity: 0.5;
        cursor: not-allowed;
        transform: none;
    }

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

    .btn-primary:hover:not(:disabled) {
        background-color: var(--color-primary-hover);
    }

.btn-success {
    background-color: var(--color-success);
    color: var(--color-white);
}

    .btn-success:hover:not(:disabled) {
        background-color: var(--color-success-hover);
    }

.btn-danger {
    background-color: var(--color-danger);
    color: var(--color-white);
}

    .btn-danger:hover:not(:disabled) {
        background-color: var(--color-danger-hover);
    }

.btn-ghost {
    background-color: transparent;
    color: var(--color-primary-btn);
    border: 1.5px solid var(--color-primary-btn);
}

    .btn-ghost:hover:not(:disabled) {
        background-color: var(--color-primary-light);
    }

/* Utilidades */
.text-muted {
    color: var(--color-text-muted);
}

.text-center {
    text-align: center;
}

.w-100 {
    width: 100%;
}

@media (max-width: 768px) {
    .topbar-title {
        max-width: 120px;
        font-size: 0.8rem;
    }

    .container-ndp {
        padding: 0.75rem;
    }
}